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1. Author Correction: Expert elicitation of state shifts and divergent sensitivities to climate warming across northern ecosystems

Author

Saulnier-Talbot, Émilie, Duchesne, Éliane, Antoniades, Dermot, Arseneault, Dominique, Barnard, Christine, Berteaux, Dominique, Bhiry, Najat, Bouchard, Frédéric, Boudreau, Stéphane, Cazelles, Kevin, Comte, Jérôme, Corbeil-Robitaille, Madeleine-Zoé, Côté, Steeve D., Couture, Raoul-Marie, de Lafontaine, Guillaume, Domine, Florent, Fauteux, Dominique, Fortier, Daniel, Garneau, Michelle, Gauthier, Gilles, Gravel, Dominique, Laurion, Isabelle, Lavoie, Martin, Lecomte, Nicolas, Legagneux, Pierre, Lévesque, Esther, Naud, Marie-José, Paquette, Michel, Payette, Serge, Pienitz, Reinhard, Rautio, Milla, Roy, Alexandre, Royer, Alain, Simard, Martin, Vincent, Warwick F., and Bêty, Joël

Published
2024
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2. Expert elicitation of state shifts and divergent sensitivities to climate warming across northern ecosystems

Author

Saulnier-Talbot, Émilie, Duchesne, Éliane, Antoniades, Dermot, Arseneault, Dominique, Barnard, Christine, Berteaux, Dominique, Bhiry, Najat, Bouchard, Frédéric, Boudreau, Stéphane, Cazelles, Kevin, Comte, Jérôme, Corbeil-Robitaille, Madeleine-Zoé, Côté, Steeve D., Couture, Raoul-Marie, de Lafontaine, Guillaume, Domine, Florent, Fauteux, Dominique, Fortier, Daniel, Garneau, Michelle, Gauthier, Gilles, Gravel, Dominique, Laurion, Isabelle, Lavoie, Martin, Lecomte, Nicolas, Legagneux, Pierre, Lévesque, Esther, Naud, Marie-José, Paquette, Michel, Payette, Serge, Pienitz, Reinhard, Rautio, Milla, Roy, Alexandre, Royer, Alain, Simard, Martin, Vincent, Warwick F., and Bêty, Joël

Published
2024
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3. Cryostratigraphical studies of ground ice formation and distribution in a High Arctic polar desert landscape, Resolute Bay, Nunavut

Author

Paquette, Michel, Fortier, Daniel, and Lamoureux, Scott F.

Subjects
Resolute Bay, Canada -- Environmental aspects, Geomorphological research, Surface-ice melting -- Research, Frozen ground -- Research, Earth sciences
Abstract

Ground ice distribution and abundance have wide-ranging effects on periglacial environments and possible impacts on climate change scenarios. In contrast, very few studies measure ground ice in the High Arctic, especially in polar deserts and where coarse surficial material complicates coring operations. Ground ice volumes and cryostructures were determined for eight sites in a polar desert, near Resolute Bay, Nunavut, chosen for their hydrogeomorphic classification. Dry, unvegetated polar desert sites exhibited ice content close to soil porosity, with a Key words: ground ice, polar desert, permafrost, Arctic, geocryology, geomorphology. La répartition spatiale et l'abondance de la glace de sol ont d'importants effets sur les milieux périglaciaires et de possibles impacts sur les scénarios de changements climatiques. Très peu d'études mesurent cependant la glace de sol dans le Haut Arctique, en particulier dans les déserts polaires et là où des matériaux meubles grossiers rendent le carottage difficile. Les volumes et les cryostructures de la glace de sol ont été déterminés dans huit sites dans un désert polaire à proximité de Resolute Bay (Nunavut), sélectionnés selon leur classification hydrogéomorphologique. Les sites de désert polaire secs et exempts de végétation présentaient des teneurs en glace semblables aux valeurs de porosité du sol, ainsi qu'une zone de transition riche en glace de < 45 cm d'épaisseur. Dans les sites en milieu humide, des cryostructures suspendues et des cryofaciès dominés par la glace (de teneur en glace au moins deux fois plus grande que la porosité) prédominaient dans les deux premiers mètres du pergélisol. La saturation en glace moyenne du sol dans ces sites était de 1,8 à 20,1 fois plus grande que leur porosité, atteignant un facteur de plus de 2 ordres de grandeurs à une échelle verticale de ~10 cm. Les teneurs en glace les plus importantes ont été observées dans des sites qui étaient historiquement des milieux humides submergés caractérisés par un apport de sédiments, une disponibilité soutenue d'eau et un accroissement syngénétique et quasi-syngénétique du pergélisol. L'enrichissement qui se produisit surtout par aggradation de glace sous le front de dégel et par un engel vers le haut, causant du soulèvement gélival et formant des plateaus lithalsiques. La plupart des sites démontraient des indices cryostratigraphiques de dégradation de pergélisol. Dans le cas des milieux humides, cette dégradation est conséquentielle, car ces lieux sont des oasis opérant les fonctions essentielles d'écologie, d'hydrologie et des cycles des nutriments et contaminants. [Traduit par la Rédaction] Mots-clés : glace de sol, désert polaire, pergélisol, Arctique, géocryologie, géomorphologie., Introduction Ground ice formation and abundance is a foundational topic of geocryology. Among the focuses, knowing the spatial distribution of ground ice and identifying ice-rich areas is an important issue [...]

Published
2022
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4. Increased Audiovisual Immersion Associated with Mirror Neuron System Enhancement Following High Fidelity Vibrokinetic Stimulation

Author

Subramaniam, Kajamathy, Boasen, Jared, Giroux, Félix, Sénécal, Sylvain, Léger, Pierre-Majorique, Paquette, Michel, Spagnoletti, Paolo, Series Editor, De Marco, Marco, Series Editor, Pouloudi, Nancy, Series Editor, Te'eni, Dov, Series Editor, vom Brocke, Jan, Series Editor, Winter, Robert, Series Editor, Baskerville, Richard, Series Editor, Davis, Fred D., editor, Riedl, René, editor, Léger, Pierre-Majorique, editor, Randolph, Adriane B., editor, and Müller-Putz, Gernot R., editor

Published
2022
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5. High Fidelity Vibrokinetic Stimulation Augments Emotional Reactivity and Interhemispheric Coherence During Passive Multimedia Interaction

Author

Boasen, Jared, Giroux, Felix, Renaud, Sara-Eve, Sénécal, Sylvain, Léger, Pierre-Majorique, Paquette, Michel, Spagnoletti, Paolo, Series Editor, De Marco, Marco, Series Editor, Pouloudi, Nancy, Series Editor, Te'eni, Dov, Series Editor, vom Brocke, Jan, Series Editor, Winter, Robert, Series Editor, Baskerville, Richard, Series Editor, Davis, Fred D., editor, Riedl, René, editor, Léger, Pierre-Majorique, editor, Randolph, Adriane B., editor, and Müller-Putz, Gernot, editor

Published
2021
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9. Broadcasting in Networks of Unknown Topology in the Presence of Swamping

Author

Kranakis, Evangelos and Paquette, Michel

Subjects
Computer Science - Distributed, Parallel, and Cluster Computing, Computer Science - Computational Complexity, Computer Science - Networking and Internet Architecture
Abstract

In this paper, we address the problem of broadcasting in a wireless network under a novel communication model: the {\em swamping} communication model. In this model, nodes communicate only with those nodes at geometric distance greater than $s$ and at most $r$ from them. Communication between nearby nodes under this model can be very time consuming, as the length of the path between two nodes within distance $s$ is only bounded above by the diameter $D$, in many cases. For the $n$-node lattice networks, we present algorithms of optimal time complexity, respectively $O(n/r + r/(r-s))$ for the lattice line and $O(\sqrt{n}/r + r/(r-s))$ for the two-dimensional lattice. We also consider networks of unknown topology of diameter $D$ and of a parameter $g$ ({\em granularity}). More specifically, we consider networks with $\gamma$ the minimum distance between any two nodes and $g = 1/\gamma$. We present broadcast algorithms for networks of nodes placed on the line and on the plane with respective time complexities $O(D/l + g^2)$ and $O(Dg/l + g^4)$, where $l \in \Theta(\max\{(1-s),\gamma\})$., Comment: A preliminary version of this paper appeared in Proc. 12th International Symposium on Stabilization, Safety, and Security of Distributed Systems (SSS 2010), New York City, USA, September 20-22, Vol 6366, pp. 267-281, LNCS Springer, 2010. Full proofs for this paper published 2010: https://scs.carleton.ca/content/communication-networks-spatially-correlated-faults

Published
2014

15. State shifts and divergent sensitivities to climate warming across northern ecosystems

Author

Saulnier-Talbot, Émilie, primary, Duchesne, Eliane, additional, Antoniades, Dermot, additional, Arseneault, Dominique, additional, Barnard, Christine, additional, Berteaux, Dominique, additional, Bhiry, Najat, additional, Bouchard, Frédéric, additional, Boudreau, Stéphane, additional, Cazelles, Kevin, additional, Comte, Jérôme, additional, Corbeil-Robitaille, Madeleine-Zoé, additional, Côté, Steeve, additional, Couture, Raoul-Marie, additional, Fontaine, Guillaume de la, additional, Domine, Florent, additional, Fauteux, Dominique, additional, Fortier, Daniel, additional, Garneau, Michelle, additional, Gauthier, Gilles, additional, Gravel, Dominique, additional, Laurion, Isabelle, additional, Lavoie, Martin, additional, Lecomte, Nicolas, additional, Legagneux, Pierre, additional, Lévesque, Esther, additional, Naud, Marie-José, additional, Paquette, Michel, additional, Payette, Serge, additional, Pienitz, Reinhard, additional, Rautio, Milla, additional, Roy, Alexandre, additional, Royer, Alain, additional, Simard, Martin, additional, Vincent, Warwick, additional, and Bêty, Joël, additional

Published
2023
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16. Black Hole Search and Exploration in Unoriented Tori with Synchronous Scattered Finite Automata

Author

Markou, Euripides, Paquette, Michel, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Baldoni, Roberto, editor, Flocchini, Paola, editor, and Binoy, Ravindran, editor

Published
2012
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19. Communication in Random Geometric Radio Networks with Positively Correlated Random Faults

Author

Kranakis, Evangelos, Paquette, Michel, Pelc, Andrzej, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Coudert, David, editor, Simplot-Ryl, David, editor, and Stojmenovic, Ivan, editor

Published
2008
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20. Communication in Networks with Random Dependent Faults

Author

Kranakis, Evangelos, Paquette, Michel, Pelc, Andrzej, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Kučera, Luděk, editor, and Kučera, Antonín, editor

Published
2007
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21. 18th European Symposium on Radiopharmacy and Radiopharmaceuticals: Salzburg, Austria. 7-10 April 2016

Author

Radchenko, V., Engle, J. W., Roy, C., Griswold, J., Nortier, M. F., Birnbaum, E. R., Brugh, M., Mirzadeh, S., John, K. D., Fassbender, M. E., Zhai, Chuangyan, Franssen, Gerben M., Petrik, Milos, Laverman, Peter, Decristoforo, Clemens, Samia, Ait-Mohand, Véronique, Dumulon-Perreault, Brigitte, Guérin, Summer, D., Kroess, A., Rangger, C., Haas, H., Laverman, P., Gerben, F., von Guggenberg, E., Decristoforo, C., Bolzati, Cristina, Salvarese, Nicola, Refosco, Fiorenzo, Meléndez-Alafort, Laura, Carpanese, Debora, Rosato, Antonio, Saviano, Michele, Del Gatto, Annarita, Comegna, Daniela, Zaccaro, Laura, Billaud, Emilie, Ahamed, Muneer, Cleeren, Frederik, Shahbazali, Elnaz, Noël, Tim, Hessel, Volker, Verbruggen, Alfons, Bormans, Guy, Cleeren, F., Lecina, J., Koole, M., Verbruggen, A., Bormans, G., Lugatoa, B., Stucchia, S., Turollaa, E. A., Giulianoa, L., Toddea, S., Ferraboschib, P., Klok, R. P., Mooijer, M. P. J., Hendrikse, N. H., Windhorst, A. D., Collet, C., Petry, N., Chrétien, F., Karcher, G., Pellegrini-Moïse, N., Lamandé-Langle, S., Pfaff, Sarah, Philippe, Cecile, Mitterhauser, Markus, Hacker, Marcus, Wadsak, Wolfgang, Guérard, François, Lee, Yong-Sok, Gouard, Sébastien, Baidoo, Kwamena, Alliot, Cyrille, Chérel, Michel, Brechbiel, Martin W., Gestin, Jean-François, Lam, K., Chan, C., Reilly, R. M., Paillas, Salomé, Marshall, John, Pouget, Jean-Pierre, Sosabowski, Jane, Briard, Emmanuelle, Auberson, Yves P., Reilly, John, Healy, Mark, Sykes, David, Paulus, Andreas, Lichtenbelt, Wouter van Marken, Mottaghy, Felix, Bauwens, Matthias, Baranski, Ann-Christin, Schäfer, Martin, Bauder-Wüst, Ulrike, Haberkorn, Uwe, Eder, Matthias, Kopka, Klaus, Chaussard, M., Hosten, B., Vignal, N., Tsoupko-Sitnikov, V., Hernio, N., Hontonnou, F., Merlet, P., Poyet, J. L., Sarda-Mantel, L., Rizzo-Padoin, N., Cardinale, J., Schäfer, M., Benešová, M., Bauder-Wüst, U., Seibert, O., Giesel, F., Haberkorn, U., Eder, M., Kopka, K., Nematallah, Mansour, Michel, Paquette, Samia, Ait-Mohand, Véronique, Dumulon-Perreault, Roger, Lecomte, Brigitte, Guérin, Fernandez-Maza, L., Rivera-Marrero, S., Capote, A. Prats, Parrado-Gallego, A., Fernandez-Gomez, I., Balcerzyk, M., Sablon-Carrazana, M., Perera-Pintado, A., Merceron-Martinez, D., Acosta-Medina, E., Rodriguez-Tanty, C., Attili, Bala, Ahamed, Muneer, Bormans, Guy, Philippe, C., Zeilinger, M., Scherer, T., Fürnsinn, C., Dumanic, M., Wadsak, W., Hacker, M., Mitterhauser, M., Janssen, B., Vugts, D. J., Molenaar, G.T. T., Funke, U., Kruijer, P. S., Dollé, F., Bormans, G., Lammertsma, A. A., Windhorst, A. D., Vermeulen, Koen, Ahamed, Muneer, Schnekenburger, Michael, Froeyen, Mathy, Olberg, Dag Erlend, Diederich, Marc, Bormansa, Guy, Raaphorst, R. M., Luurtsema, G., Lammertsma, A. A., Elsinga, P. H., Windhorst, A D., Rotteveel, Lonneke, Funke, Uta, ten Dijke, Peter, Bogaard, Harm Jan, Lammertsma, Adriaan A., Windhorst, Albert D., Song, Lei, Able, Sarah, Falzone, Nadia, Kersemans, Veerle, Vallis, Katherine, Carta, Davide, Salvarese, Nicola, Sihver, Wiebke, Gao, Feng, Pietzsch, Hans Jürgen, Biondi, Barbara, Ruzza, Paolo, Refosco, Fiorenzo, Bolzati, Cristina, Haubner, Roland, Finkensted, Armin, Stegmair, Armin, Rangger, Christine, Decristoforo, Clemens, Zoller, Heinz, Virgolini, Irene J., Pooters, Ivo, Lotz, Maartje, Wierts, Roel, Mottaghy, Felix, Bauwens, Matthias, Forsback, Sarita, Jörgen, Bergman, Riikka, Kivelä, Karageorgou, M., Radović, M., Tsoukalas, C., Antic, B., Gazouli, M., Paravatou-Petsotas, M., Xanthopouls, S., Calamiotou, M., Stamopoulos, D., Vranješ-Durić, S., Bouziotis, P., Lunev, A. S., Larenkov, A. A., Petrosova, K. A., Klementyeva, O. E., Kodina, G. E., Kvernenes, O. H., Adamsen, T. C. H., Martin, René, Weidlich, Sebastian, Zerges, Anna-Maria, Gameiro, Cristiana, Lazarova, Neva, Müllera, Marco, Luurtsema, Gert, de Vries, Michèl, Ghyoot, Michel, van der Woude, Gina, Zijlma, Rolf, Dierckx, Rudi, Boersma, Hendrikus H., Elsinga, Philip H., Lambrecht, Fatma Yurt, Er, Ozge, Ince, Mine, Avci, Cıgır Biray, Gunduz, Cumhur, Sarı, Fatma Aslihan, Ocakoglu, Kasim, Er, Ozge, Ersoz, Onur Alp, Lambrecht, Fatma Yurt, Ince, Mine, Kayabasi, Cagla, Gunduz, Cumhur, Kniess, Torsten, Meister, Sebastian, Fischer, Steffen, Steinbach, Jörg, Ashfaq, Rabia, Iqbal, Saeed, ullah Khan, Irfan, Iglesias-Jerez, R., Martín-Banderas, L., Perera-Pintado, A., Borrego-Dorado, I., Farinha-Antunes, Ines, Kwizera, Chantal, Lacivita, Enza, Lucente, Ermelinda, Niso, Mauro, De Giorgio, Paola, Perrone, Roberto, Colabufo, Nicola A., Elsinga, Philip H., Leopoldo, Marcello, Vaulina, V. V., Fedorova, O. S., Orlovskaja, V. V., Chen, С. L., Li, G. Y., Meng, F. C., Liu, R. S., Wang, H. E., Krasikova, R. N., Meléndez-Alafort, Laura, Abozeid, Mohamed, Ferro-Flores, Guillermina, Negri, Anna, Bello, Michele, Uzunov, Nikolay, Paiusco, Martha, Esposito, Juan, Rosato, Antonio, Meléndez-Alafort, Laura, Bolzati, Cristina, Ferro-Flores, Guillermina, Salvarese, Nicola, Carpanese, Debora, Abozeid, Mohamed, Rosato, Antonio, Uzunov, Nikolay, Palmieri, L., Verbrugghen, T., Glassner, M., Hoogenboom, R., Staelens, S., Wyffels, L., Orlovskaja, V. V., Kuznetsova, O. F., Fedorova, O. S., Maleev, V. I., Belokon, Yu. N., Geolchanyan, A., Saghyan, A. S., Mu, L., Schibli, R., Ametamey, S. M., Krasikova, R. N., Revunov, Evgeny, Malmquist, Jonas, Johnström, Peter, Van Valkenburgh, Juno, Steele, Dalton, Halldin, Christer, Schou, Magnus, Osati, Samira, Paquette, Michel, Beaudoin, Simon, Ali, Hasrat, Guerin, Brigitte, Leyton, Jeffrey V., van Lier, Johan E., Di Iorio, V, Iori, M., Donati, C., Lanzetta, V., Capponi, P. C., Rubagotti, S., Dreger, T., Kunkel, F., Asti, M., Zhai, Chuangyan, Rangger, Christine, Summer, Dominik, Haas, Hubertus, Decristoforo, Clemens, Kijprayoon, Suphansa, Ruangma, Ananya, Ngokpol, Suthatip, Tuamputsha, Samart, Filp, Ulrike, Pees, Anna, Taddei, Carlotta, Pekošak, Aleksandra, Gee, Antony D., Poot, Alex J., Windhorst, Albert D., Gunay, Mine Silindir, Ozer, A. Yekta, Erdogan, Suna, Baysal, Ipek, Guilloteau, Denis, Chalon, Sylvie, Galli, Filippo, Artico, Marco, Taurone, Samanta, Bianchi, Enrica, Weintraub, Bruce D., Skudlinski, Mariusz, Signore, Alberto, Lepareur, Nicolas, Noiret, Nicolas, Hindré, François, Lacœuille, Franck, Benoist, Eric, Garin, Etienne, Trejo-Ballado, F., Zamora-Romo, E., Manrique-Arias, J. C., Gama-Romero, H M, Contreras-Castañon, G., Tecuapetla-Chantes, R. G., Avila-Rodriguez, M. A., Kvaternik, H., Hausberger, D., Zink, C., Rumpf, B., Aigner, R. M., Kvaternik, H., Hausberger, D., Rumpf, B., Aigner, R. M., Janković, Drina, Lakić, Mladen, Savić, Aleksandar, Ristić, Slavica, Nikolić, Nadežda, Vukadinović, Aleksandar, Sabo, Tibor J., Vranješ-Đurić, Sanja, Vranješ-Đurić, S., Radović, M., Janković, D., Nikolić, N., Goya, G. F., Calatayud, P., Spasojević, V., Antić, B., Goblet, David, Gameiro, Cristiana, Lazarova, Neva, Gameiro, Cristiana, Oxley, Ian, Abrunhosa, Antero, Kramer, Vasko, Vosjan, Maria, Spaans, Arnold, Vats, Kusum, Satpati, Drishty, Sarma, Haladhar D., Banerjee, Sharmila, Wojdowska, W., Pawlak, D. W., Parus, L. J., Garnuszek, P., Mikołajczak, R., Pijarowska-Kruszyna, J., Jaron, A., Kachniarz, A., Malkowski, B., Garnuszek, P., Mikolajczak, R., Ilem-Ozdemir, Derya, Caglayan-Orumlu, Oya, Asikoglu, Makbule, Ilem-Ozdemir, Derya, Caglayan-Orumlu, Oya, Asikoglu, Makbule, Eveliina, Arponen, Semi, Helin, Timo, Saarinen, Simo, Vauhkala, Esa, Kokkomäki, Pertti, Lehikoinen, De Simone, Mariarosaria, Pascali, Giancarlo, Carzoli, Ludovica, Quaglierini, Mauro, Telleschi, Mauro, Salvadori, Piero A., Lam, Phoebe, Aistleitner, Martina, Eichinger, Reinhard, Artner, Christoph, Nakka, Surendra, MC, Hemantha Kumara, Al-Qahtani, Mohammed, Al-Qahtani, Mohammed, Al-Malki, Yousif, Mambilima, N., Rubow, S. M., Berroterán-Infante, N., Hacker, M., Mitterhauser, M., Wadsak, W., Funke, Uta, Cleeren, Frederik, Lecina, Joan, Gallardo, Rodrigo, Verbruggen, Alfons M., Bormans, Guy, Ramos-Membrive, Rocío, Brotons, Ana, Quincoces, Gemma, Inchaurraga, Laura, de Redín, Inés Luis, Morán, Verónica, García-García, Berta, Irache, Juan Manuel, Peñuelas, Iván, Trabelsi, M., Cooper, M. S., Abella, Alejandra, Fuente, Teodomiro, Montellano, Antonio Jesús, Martínez, Teresa, Rabadan, Ruben, Meseguer-Olmo, Luis, Lehtiniemi, P., Yim, C., Mikkola, K., Nuutila, P., Solin, O., von Guggenberg, E., Rangger, C., Mair, C., Balogh, L., Pöstényi, Z., Pawlak, D., Mikołajczak, R., Socan, A., Peitl, P. Kolenc, Krošelj, M., Rangger, C., Decristoforo, C., Collet, C., Remy, S., Didier, R., Vergote, T., Karcher, G., Véran, N., Pawlak, D., Maurin, M., Garnuszek, P., Karczmarczyk, U., Mikołajczak, R., Fredericia, Pil, Severin, Gregory, Groesser, Torsten, Köster, Ulli, Jensen, Mikael, Leonte, R., Puicea, F. D., Raicu, A., Min, E. A., Serban, R., Manda, G., Niculae, D., Zerna, Marion, Schieferstein, Hanno, Müller, Andre, Berndt, Mathias, Yim, Cheng-Bin, Mikkola, Kirsi, Nuutila, Pirjo, Solin, Olof, Seifert, D., Ráliš, J., Lebeda, O., Selivanova, Svetlana V., Senta, Helena, Lavallée, Éric, Caouette, Lyne, Turcotte, Éric, Lecomte, Roger, Kochovska, Marina Zdraveska, Ivanovska, Emilija Janjevik, Jokic, Vesna Spasic, Ackova, Darinka Gjorgieva, Smilkov, Katarina, Makreski, Petre, Stafilov, Trajče, Janevik-Ivanovska, Emilija, Alemu, Aschalew, Muchira, Joel Munene, Wanjeh, David Mwanza, Janevik-Ivanovska, Emilija, Janevik-Ivanovska, Emilija, Zdravev, Zoran, Bhonsle, Uday, Alberto, Osso Júnior João, Duatti, Adriano, Angelovska, Bistra, Stojanovska, Zdenka, Sarafinovska, Zorica Arsova, Bosnakovski, Darko, Gorgieva-Ackova, Darinka, Smilkov, Katarina, Drakalska, Elena, Venkatesh, Meera, Gulaboski, Rubin, Colin, Didier J., Inkster, James A. H., Germain, Stéphane, Seimbille, Yann, Atiq-ur-Rehman, and Cayero-Otero

Published
2016
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23. Optimal Decision Strategies in Byzantine Environments

Author

Paquette, Michel, Pelc, Andrzej, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Dough, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Královic̆, Ratislav, editor, and Sýkora, Ondrej, editor

Published
2004
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32. Cryostratigraphical studies of ground ice formation and distribution in a High Arctic polar desert landscape, Resolute Bay, Nunavut1.

Author

Paquette, Michel, Fortier, Daniel, and Lamoureux, Scott F.

Subjects
ICE, WATER supply, WETLANDS, SOIL porosity, FROST heaving, DESERTS
Abstract

Copyright of Canadian Journal of Earth Sciences is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2022
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37. Hot trends and impact in permafrost science

Author

Sjöberg, Ylva, primary, Siewert, Matthias B., additional, Rudy, Ashley C.A., additional, Paquette, Michel, additional, Bouchard, Frédéric, additional, Malenfant‐Lepage, Julie, additional, and Fritz, Michael, additional

Published
2020
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39. Building on each other’s work - Impact and inspiration of permafrost research from 1998 to 2017

Author

Sjöberg, Ylva, Rudy, Ashley, Siewert, Matthias, Paquette, Michel, Bouchard, Fréderic, Malenfant-Lepage, Julie, and Fritz, Michael

Abstract

Research on permafrost has intensified in recent years, due to enhanced warming in the Arctic and in alpine regions, and the direct feedbacks between thawing permafrost and climate. To explore how scientists build on existing knowledge on permafrost and identify which studies inspire more research, we analyzed scientific articles published over two decades, before (1998-2007) and after (2008-2017) the 4th International Polar Year (2007/2008). We compared this bibliometric data to results from an online survey in which respondents were asked to list the most influential and inspiring publications on permafrost in their view. While publications per year have more than doubled for multidisciplinary geosciences from 1998 to 2017, permafrost publications have increased more than six-fold for the same period, according to bibliometric data from Web of Science. Permafrost publications have increased the most in journals focusing on biogeosciences (e.g. Journal of Geophysical Research - Biogeosciences) but also in the broader geoscience and science journals (e.g. Geophysical Research Letters, Nature), reflecting a shift towards more carbon-cycle focused research in later years. From the survey, many listed books as the most influential publications and comments also revealed that conferences, photographs, movies and (non-science) books inspire permafrost researchers. Keeping track on how knowledge is collectively built within a scientific discipline and community, can help us to identify how to design impactful studies and how to coordinate research efforts in a time when high quality and impact research is badly needed.

Published
2019

41. Hot trends and impact in permafrost science

Author

Sjöberg, Ylva, Siewert, Matthias B., Rudy, Ashley C. A., Paquette, Michel, Bouchard, Frederic, Malenfant-Lepage, Julie, Fritz, Michael, Sjöberg, Ylva, Siewert, Matthias B., Rudy, Ashley C. A., Paquette, Michel, Bouchard, Frederic, Malenfant-Lepage, Julie, and Fritz, Michael

Abstract

An increased interest in Arctic environments, mainly due to climate change, has changed the conditions for permafrost research in recent years. This change has been accompanied by a global increase in scientific publications, as well as a trend towards open access publications. We have analyzed abstracts, titles and keywords for publications on permafrost from 1998 to 2017 to identify developments (topics, impact and collaboration) in the field of permafrost research in light of these changes. Furthermore, to understand how scientists build on and are inspired by each other's work, we have (a) developed citation networks from scientific publications on permafrost and (b) conducted an online survey on inspiration in permafrost science. Our results show an almost 400% increase in publications containing the word permafrost in the title, keywords or abstract over the study period, and a strong increase in climate-change-related research in terms of publications and citations. Survey respondents (n = 122) find inspiration not only in scientific journal publications, but to a large extent in books and public outreach materials. We argue that this increase in global-scope issues (i.e., climate change) complementing core permafrost research has provided new incentives for international collaborations and wider communication efforts.

Published
2020
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42. Extreme warming and regime shift toward amplified variability in a far northern lake

Author

Bégin, Paschale Noël, Tanabe, Yukiko, Kumagai, Michio, Culley, Alexander, Paquette, Michel, Sarrazin, Denis, Uchida, Masaki, Vincent, Warwick F., Bégin, Paschale Noël, Tanabe, Yukiko, Kumagai, Michio, Culley, Alexander, Paquette, Michel, Sarrazin, Denis, Uchida, Masaki, and Vincent, Warwick F.

Abstract

Mean annual air temperatures in the High Arctic are rising rapidly, with extreme warming events becoming increasingly common. Little is known, however, about the consequences of such events on the ice‐capped lakes that occur abundantly across this region. Here, we compared 2 years of high‐frequency monitoring data in Ward Hunt Lake in the Canadian High Arctic. One of the years included a period of anomalously warm conditions that allowed us to address the question of how loss of multi‐year ice cover affects the limnological properties of polar lakes. A mooring installed at the deepest point of the lake (9.7 m) recorded temperature, oxygen, chlorophyll a (Chl a ) fluorescence, and underwater irradiance from July 2016 to July 2018, and an automated camera documented changes in ice cover. The complete loss of ice cover in summer 2016 resulted in full wind exposure and complete mixing of the water column. This mixing caused ventilation of lake water heat to the atmosphere and 4°C lower water temperatures than under ice‐covered conditions. There were also high values of Chl a fluorescence, elevated turbidity levels and large oxygen fluctuations throughout fall and winter. During the subsequent summer, the lake retained its ice cover and the water column remained stratified, with lower Chl a fluorescence and anoxic bottom waters. Extreme warming events are likely to shift polar lakes that were formerly capped by continuous thick ice to a regime of irregular ice loss and unstable limnological conditions that vary greatly from year to year.

Published
2020

43. Landscape-related ground ice variability on the Yukon coastal plain inferred from computed tomography and potential implications on lateral permafrost carbon release

Author

Tanski, George, Pika, Philip, Eisses, Bastiaan, Calmels, Fabrice, Roy, Louis-Philippe, Speetjens, Niek, Koch, Boris, Knoblauch, Christian, Bröder, Lisa, Lantuit, Hugues, Hugelius, Gustaf, Wolter, Juliane, Richter, Andreas, Fortier, Daniel, Paquette, Michel, Fritz, Michael, Vonk, Jorien, Tanski, George, Pika, Philip, Eisses, Bastiaan, Calmels, Fabrice, Roy, Louis-Philippe, Speetjens, Niek, Koch, Boris, Knoblauch, Christian, Bröder, Lisa, Lantuit, Hugues, Hugelius, Gustaf, Wolter, Juliane, Richter, Andreas, Fortier, Daniel, Paquette, Michel, Fritz, Michael, and Vonk, Jorien

Abstract

Warming in the Arctic causes strong environmental changes with permafrost degradation being among the most striking effects. Active layer deepening and permafrost erosion can result in the mobilization and lateral transport of organic carbon (OC), which potentially alters carbon cycles in the Arctic substantially. Although the understanding of ground ice contents and permafrost OC release is improving, still little is known of permafrost OC release rates, lateral transport pathways and its driving mechanisms on a landscape scale. In this study we investigate ground ice characteristics and OC composition of the most dominant landscape units of the Yukon coastal plain. In total, 12 permafrost cores were taken from moraine, lacustrine, fluvial and glaciofluvial deposits with a SIPRE corer. Ground ice and sediment contents were analysed using computed tomography and k-means classification. Active layer and upper permafrost were subsampled to analyse OC contents and isotopes of bulk material and a leaching-incubation experiment was conducted with active layer and permafrost sediments to assess potential dissolved OC export and degradation rates. Preliminary results show that ground ice contents vary significantly between landscape units. Ground ice contents in permafrost average 72.4 vol.-% with highest contents in moraines (78.3 vol.-%) and lowest contents in fluvial deposits (53.2 vol.-%). We expect highest dissolved OC leaching and loss rates from permafrost in contrast to active layer and from fluvial and lacustrine deposits, as they simply contain more OC. Yet, lateral OC transport is more likely for landscapes with a topographic gradient such as ground ice-rich moraines. We conclude that due to the high ground ice contents on the Yukon coastal plain, substantial changes of the permafrost landscape will occur under current warming trends. This will include subsidence, abrupt erosion, changes in hydrology and OC degradation processes, which will differ between landsc

Published
2020

44. Aakkiartorpoq!: Frozen-Ground Cartoons; Eqqumiitsuliortut nunalu qeriuaannartoq pillugu ilisimatuut akornanni suleqatigiinneq

Author

Nääs, Heta, Ross, Noémie, Bouchard, Fréderic, Deshpande, Bethany, Fritz, Michael, Malenfant-Lepage, Julie, Nieuwendam, Alexandre, Paquette, Michel, Rudy, Ashley, Siewert, Matthias Benjamin, Sjöberg, Ylva, Veillette, Audrey, Weege, Stefanie, Harbor, John, Habeck, J. O., Rasmussen, K. K., Langley, K., Nääs, Heta, Ross, Noémie, Bouchard, Fréderic, Deshpande, Bethany, Fritz, Michael, Malenfant-Lepage, Julie, Nieuwendam, Alexandre, Paquette, Michel, Rudy, Ashley, Siewert, Matthias Benjamin, Sjöberg, Ylva, Veillette, Audrey, Weege, Stefanie, Harbor, John, Habeck, J. O., Rasmussen, K. K., and Langley, K.

Abstract

This project started in October 2015 with a crazy idea: prepare and submit a funding application for an international, multidisciplinary and non-traditional scientific outreach project… within the next 48 hours. Well, it worked out. A group of highly motivated young researchers from Canada and Europe united to combine arts and science and produce a series of outreach comic strips about permafrost (frozen ground). The aim of the project is to present and explain scientific research conducted across the circumpolar Arctic, placing emphasis on field work and the rapidly changing northern environment. The target audience is kids, youth, parents and teachers, with the general goal of making permafrost science more fun and accessible to the public. Because guess what : permafrost represents an area of more than twenty million km2 in the Northern Hemisphere, a huge area. As the climate warms, permafrost thaws and becomes unstable for houses, roads and airports. This rapid thawing of previously frozen ground also disrupts plant and animal habitats, impacts water quality and the ecology of lakes, and releases carbon into the atmosphere as greenhouse gases, making climate change even stronger. Hence permafrost and its response to climate change concerns us all. The project received initial support from the International Permafrost Association (IPA) as a targeted ‘Action Group’, and since then several other sponsors have joined the project. Here we are, now, two years after this first idea. What you are about to read is the result of an iterative process of exchanging ideas between artists and scientists. We first made an application call and received 49 applications from artists in 16 countries. Through a formal review process, we then selected two artists to work on this project: Noémie Ross from Canada, and Heta Nääs from Finland. With input from scientists, Noémie and Heta created fantastic cartoons that explain some of the changes happening to the environment in permafros

Published
2020

45. Det tør!: Frozen-Ground Cartoons; Et international samarbejde mellem kunstnere og permafrostforskere

Author

Nääs, Heta, Ross, Noémie, Bouchard, Fréderic, Deshpande, Bethany, Fritz, Michael, Malenfant-Lepage, Julie, Nieuwendam, Alexandre, Paquette, Michel, Rudy, Ashley, Siewert, Matthias Benjamin, Sjöberg, Ylva, Veillette, Audrey, Weege, Stefanie, Harbor, John, Habeck, J. O., Rasmussen, K. K., Langley, Kirsty, Nääs, Heta, Ross, Noémie, Bouchard, Fréderic, Deshpande, Bethany, Fritz, Michael, Malenfant-Lepage, Julie, Nieuwendam, Alexandre, Paquette, Michel, Rudy, Ashley, Siewert, Matthias Benjamin, Sjöberg, Ylva, Veillette, Audrey, Weege, Stefanie, Harbor, John, Habeck, J. O., Rasmussen, K. K., and Langley, Kirsty

Abstract

This project started in October 2015 with a crazy idea: prepare and submit a funding application for an international, multidisciplinary and non-traditional scientific outreach project… within the next 48 hours. Well, it worked out. A group of highly motivated young researchers from Canada and Europe united to combine arts and science and produce a series of outreach comic strips about permafrost (frozen ground). The aim of the project is to present and explain scientific research conducted across the circumpolar Arctic, placing emphasis on field work and the rapidly changing northern environment. The target audience is kids, youth, parents and teachers, with the general goal of making permafrost science more fun and accessible to the public. Because guess what : permafrost represents an area of more than twenty million km2 in the Northern Hemisphere, a huge area. As the climate warms, permafrost thaws and becomes unstable for houses, roads and airports. This rapid thawing of previously frozen ground also disrupts plant and animal habitats, impacts water quality and the ecology of lakes, and releases carbon into the atmosphere as greenhouse gases, making climate change even stronger. Hence permafrost and its response to climate change concerns us all. The project received initial support from the International Permafrost Association (IPA) as a targeted ‘Action Group’, and since then several other sponsors have joined the project. Here we are, now, two years after this first idea. What you are about to read is the result of an iterative process of exchanging ideas between artists and scientists. We first made an application call and received 49 applications from artists in 16 countries. Through a formal review process, we then selected two artists to work on this project: Noémie Ross from Canada, and Heta Nääs from Finland. With input from scientists, Noémie and Heta created fantastic cartoons that explain some of the changes happening to the environment in permafros

Published
2020

46. Frozen-Ground Cartoons: An international collaboration between artists and permafrost scientists - Inuktitut

Author

Nääs, Heta, Ross, Noémie, Bouchard, Fréderic, Deshpande, Bethany, Fritz, Michael, Malenfant-Lepage, Julie, Nieuwendam, Alexandre, Paquette, Michel, Rudy, Ashley, Sansoulet, Julie, Siewert, Matthias Benjamin, Sjöberg, Ylva, Veillete, Audrey, Weege, Stefanie, Harbor, John, Habeck, J. O., Nääs, Heta, Ross, Noémie, Bouchard, Fréderic, Deshpande, Bethany, Fritz, Michael, Malenfant-Lepage, Julie, Nieuwendam, Alexandre, Paquette, Michel, Rudy, Ashley, Sansoulet, Julie, Siewert, Matthias Benjamin, Sjöberg, Ylva, Veillete, Audrey, Weege, Stefanie, Harbor, John, and Habeck, J. O.

Abstract

This project started in October 2015 with a crazy idea: prepare and submit a funding application for an international, multidisciplinary and non-traditional scientific outreach project… within the next 48 hours. Well, it worked out. A group of highly motivated young researchers from Canada and Europe united to combine arts and science and produce a series of outreach comic strips about permafrost (frozen ground). The aim of the project is to present and explain scientific research conducted across the circumpolar Arctic, placing emphasis on field work and the rapidly changing northern environment. The target audience is kids, youth, parents and teachers, with the general goal of making permafrost science more fun and accessible to the public. Because guess what : permafrost represents an area of more than twenty million km2 in the Northern Hemisphere, a huge area. As the climate warms, permafrost thaws and becomes unstable for houses, roads and airports. This rapid thawing of previously frozen ground also disrupts plant and animal habitats, impacts water quality and the ecology of lakes, and releases carbon into the atmosphere as greenhouse gases, making climate change even stronger. Hence permafrost and its response to climate change concerns us all. The project received initial support from the International Permafrost Association (IPA) as a targeted ‘Action Group’, and since then several other sponsors have joined the project. Here we are, now, two years after this first idea. What you are about to read is the result of an iterative process of exchanging ideas between artists and scientists. We first made an application call and received 49 applications from artists in 16 countries. Through a formal review process, we then selected two artists to work on this project: Noémie Ross from Canada, and Heta Nääs from Finland. With input from scientists, Noémie and Heta created fantastic cartoons that explain some of the changes happening to the environment in permafros

Published
2020

49. Le rôle des formes périglaciaires dans l’hydrologie et l’évolution des pentes d’un désert polaire dans le Haut-Arctique canadien

Author

Paquette, Michel, Fortier, Daniel, and Vincent, Warwick F.

Subjects
Limnologie, Polar desert, Hydrologie périglaciaire, Érosion, Patterned ground, Geomorphology, Sediment transport, Water tracks, Dénudation du paysage, Évolution de pente, Limnology, Sols triés, Ward Hunt, Periglacial hydrology, Preferential flow, Géomorphologie, Écoulement préférentiel, Periglacial slope
Abstract

Le contexte géomorphologique permet d’établir les liens de fonctionnalité d’un paysage avec ses composantes écosystémiques. Dans le cas des paysages périglaciaires, leurs mécanismes d’évolution demeurent peu étudiés, car leur historique de recherche est fortement empreint d’une impression d’exceptionnalité tirant son origine des conditions climatiques extrêmes qu’ils encourent. Il est cependant primordial de pouvoir identifier les mécanismes dominants de flux sédimentaires afin d’établir les liens entre les composantes du système géomorphologique. À l’échelle fondamentale d’une pente, les mécanismes issus du cryo-conditionnement du paysage vont dicter son évolution ainsi que ses fonctions écosystémiques. La thèse étudie ces mécanismes en examinant le rôle que tiennent les formes périglaciaires dans l’établissement d’un réseau de drainage sur une pente d’un désert polaire du Haut-Arctique. Elle cherche surtout à établir les liens entre les processus azonaux fondamentaux de transport sédimentaires par le ruissellement et les conditions dérivées des processus climatiques de redistribution de neige ainsi que de triage et de mouvements de masses associés à la formation des sols triés. Elle y parvient en s’attardant à la morphologie des dépôts de surface (ch. 2) ainsi qu’aux fonctions qu’occupent les patrons de triage face à l’hydrologie (ch. 3), à l’évolution de la pente (ch. 4) et aux impacts sur les conditions limnologiques d’un lac de tête (ch. 5). L’organisation du réseau de drainage est issue de la combinaison des processus de triages ainsi que du pouvoir érosif des écoulements provenant de la fonte des combes à neige. La nature grossière des dépôts de surface permet un écoulement dans les vides entre les particules, formant un réseau de drainage souterrain possédant une conductivité hydraulique relativement élevée. Ce réseau d’écoulement préférentiel est efficace afin d’évacuer les eaux de fonte de la neige, ce qui réduit la durée de leur interaction avec les sols se trouvant hors des zones d’écoulement préférentiels. Les eaux émergent en bas de pente, transportant parfois avec elles des sédiments en suspension dont les concentrations sont limitées par leur disponibilité. Ces concentrations demeurent comparables aux concentrations publiées pour les eaux de surface ailleurs dans l’Arctique. Le travail principal de dénudation de la pente s’effectue par le transport en solution, qui excède jusqu’à un ordre de grandeur les transports en suspension. Le ruissellement contribue à l’apport de chaleur au lac de tête qu’il nourrit, et la pente possédant cet écoulement préférentiel est le premier secteur de dégel du couvert de glace de lac, contribuant à sa disparition totale aux étés 2011 et 2012. Le réseau de drainage réagit également à la dégradation du pergélisol, transportant des eaux d’une salinité élevée. Ces apports de chaleur et de sels dissous ont le potentiel d’influencer les conditions limnologiques du littoral. La thèse souligne ainsi l’importance des processus azonaux dans l’établissement du modelé d’une région dominée par le gel. Elle démontre que l’évolution d’une pente en désert polaire s’est effectuée à travers la relation entre les processus périglaciaires de triages et le ruissellement, et que cette relation exerce un certain contrôle pour l’écosystème du lac de tête en aval., Geomorphology exerts a fundamental control on ecosystems. In the case of periglacial landscapes, the mechanisms by which they evolve are not clearly defined, as research on the subject has often been excessively focused on the expressions of freeze-thaw processes as climatic control over landform development. It is however essential to identify and clarify what are the fundamental dynamics of sediment transport in periglacial regions to understand the evolution and the functions of these landscapes. At the scale of a unit slope, the mechanisms originating from cryo-conditioning are the main drivers of evolution. These include the effects of freeze-thaw processes on surface deposits and the production of large, periodic water supplies by snow redistribution and snowmelt. This thesis investigates the role played by periglacial landforms in the establishment of drainage pathways on a High Arctic polar desert landscape. It aims at establishing links between the azonal processes of runoff generation and sediment transport, and the climate-dependant processes of sorting and mass movement associated with the formation of patterned ground. It achieves this objective by focussing on surface deposit morphology (ch. 2), on the hydrological functions those patterned ground possess (ch. 3), on sediment transport on the slope (ch. 4) and on the impacts of those flowpaths on limnological conditions in a downstream headwater lake (ch. 5). The organisation of the drainage pathways is dependant upon the combination of sorting processes with erosion from snowmelt of large snowdrifts. The coarse nature of the reworked glacial drift and gelifracted slope deposits allowed water to move through the large voids between the particles, creating underground flow pathways of a relatively high hydraulic conductivity. These networks of preferential flow pathways similar to water tracks were efficient at transporting snowmelt, preventing the interaction of water with the rest of the soil outside of the flow paths. Some of the seeping water sources downslope from the snowdrifts yielded amounts of suspended sediments of similar amplitudes as other surface flow pathways in the Arctic. Solute transport was however the main driver of denudation, with concentrations exceeding suspended sediments by up to an order of magnitude. The presence of these flow paths influenced the timing of ice melting on the lake, contributing to the novel disappearance of perennial ice on the donwstream lake in 2011 and 2012. In addition, these flowpaths reacted to the degradation of the transient layer of permafrost in 2014, releasing solute rich waters in the soils and into the downstream lake. Further degradation of permafrost is expected to increase inputs of salt-rich waters to the littoral zone. The thesis effectively exemplifies how the evolution of a polar desert slope under severe periglacial conditions can be dependant upon the relation between sorting and water flow. This underlines the relevance of azonal processes for the geomorphology of a frost-dominated region, but maintains the importance of the periglacial control on soil morphology exerted by freeze-thaw processes.

Published
2018

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