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10 results on '"Guillet, S"'

1. A glacial lake outburst floods hazard assessment in the Patagonian Andes combining inventory data and case-studies

Author

Colavitto, B., Allen, S., Winocur, D., Dussaillant, A., Guillet, S., Muñoz-Torrero Manchado, A., Gorsic, S., Stoffel, M., Colavitto, B., Allen, S., Winocur, D., Dussaillant, A., Guillet, S., Muñoz-Torrero Manchado, A., Gorsic, S., and Stoffel, M.

Abstract

We present a glacial-related lake inventory for a region spanning 41.5° - 47° S in Patagonian Andes, where information on past glacier lake outburst floods (GLOF's) has hitherto remained significantly underreported. Analyzing remotely sensed images, we obtained data on 702 glacial-related lakes. Through detailed geomorphic assessments and manual supervision, we revised current inventories and added 35 GLOFs triggered from moraine/bedrock dammed lakes failures. The regional GLOF inventory presented contains information on 71 historical failures of moraine/bedrock dammed glacial lakes. From this database we analyzed outburst timing and managed to constrain 37 events occurrences within a period of 1 year. Around 40 % of them have occurred since the early 2000's, most of them originating from lakes probably formed as a delayed response to the glacial retreat imposed by the end of the Little Ice Age. On the other hand, we analyzed meteorological conditions for a sub-set of 10 events constrained within a 10-days period, finding a strong link between atmospheric rivers, cut-off lows impacting the southern Andes, and GLOFs. Only one case is likely to have been triggered by a Mw 4.9 earthquake. Based on topographic potential for avalanching, we estimated GLOF hazard potential, recognizing at least 3 subregions with high hazard, which moreover can be highly susceptible to climate conditions that regionally affect GLOF occurrence.

Published
2024

2. Current Siberian heating is unprecedented during the past seven millennia

Author

Hantemirov, R. M., Corona, C., Guillet, S., Shiyatov, S. G., Stoffel, M., Osborn, T. J., Melvin, T. M., Gorlanova, L. A., Kukarskih, V. V., Surkov, A. Y., von Arx, G., Fonti, P., Hantemirov, R. M., Corona, C., Guillet, S., Shiyatov, S. G., Stoffel, M., Osborn, T. J., Melvin, T. M., Gorlanova, L. A., Kukarskih, V. V., Surkov, A. Y., von Arx, G., and Fonti, P.

Abstract

The Arctic is warming faster than any other region on Earth. Putting this rapid warming into perspective is challenging because instrumental records are often short or incomplete in polar regions and precisely-dated temperature proxies with high temporal resolution are largely lacking. Here, we provide this long-term perspective by reconstructing past summer temperature variability at Yamal Peninsula – a hotspot of recent warming – over the past 7638 years using annually resolved tree-ring records. We demonstrate that the recent anthropogenic warming interrupted a multi-millennial cooling trend. We find the industrial-era warming to be unprecedented in rate and to have elevated the summer temperature to levels above those reconstructed for the past seven millennia (in both 30-year mean and the frequency of extreme summers). This is undoubtedly of concern for the natural and human systems that are being impacted by climatic changes that lie outside the envelope of natural climatic variations for this region. © 2022, The Author(s).

Published
2022

3. The influence of decision-making in tree ring-based climate reconstructions

Author

Buentgen, U, Allen, K, Anchukaitis, KJ, Arseneault, D, Boucher, E, Brauning, A, Chatterjee, S, Cherubini, P, Churakova (Sidorova), O, Corona, C, Gennaretti, F, Griessinger, J, Guillet, S, Guiot, J, Gunnarson, B, Helama, S, Hochreuther, P, Hughes, MK, Huybers, P, Kirdyanov, A, Krusic, PJ, Ludescher, J, Meier, WJ-H, Myglan, VS, Nicolussi, K, Oppenheimer, C, Reinig, F, Salzer, MW, Seftigen, K, Stine, AR, Stoffel, M, St George, S, Tejedor, E, Trevino, A, Trouet, V, Wang, J, Wilson, R, Yang, B, Xu, G, Esper, J, Buentgen, U, Allen, K, Anchukaitis, KJ, Arseneault, D, Boucher, E, Brauning, A, Chatterjee, S, Cherubini, P, Churakova (Sidorova), O, Corona, C, Gennaretti, F, Griessinger, J, Guillet, S, Guiot, J, Gunnarson, B, Helama, S, Hochreuther, P, Hughes, MK, Huybers, P, Kirdyanov, A, Krusic, PJ, Ludescher, J, Meier, WJ-H, Myglan, VS, Nicolussi, K, Oppenheimer, C, Reinig, F, Salzer, MW, Seftigen, K, Stine, AR, Stoffel, M, St George, S, Tejedor, E, Trevino, A, Trouet, V, Wang, J, Wilson, R, Yang, B, Xu, G, and Esper, J

Abstract

Tree-ring chronologies underpin the majority of annually-resolved reconstructions of Common Era climate. However, they are derived using different datasets and techniques, the ramifications of which have hitherto been little explored. Here, we report the results of a double-blind experiment that yielded 15 Northern Hemisphere summer temperature reconstructions from a common network of regional tree-ring width datasets. Taken together as an ensemble, the Common Era reconstruction mean correlates with instrumental temperatures from 1794-2016 CE at 0.79 (p < 0.001), reveals summer cooling in the years following large volcanic eruptions, and exhibits strong warming since the 1980s. Differing in their mean, variance, amplitude, sensitivity, and persistence, the ensemble members demonstrate the influence of subjectivity in the reconstruction process. We therefore recommend the routine use of ensemble reconstruction approaches to provide a more consensual picture of past climate variability.

Published
2021

4. Liquid-phase mega-electron-volt ultrafast electron diffraction

Author

F. Nunes, J. P., Ledbetter, K., Lin, M., Kozina, M., DePonte, D. P., Biasin, E., Centurion, M., Crissman, C. J., Dunning, M., Guillet, S., Jobe, K., Liu, Y., Mo, M., Shen, X., Sublett, R., Weathersby, S., Yoneda, C., Wolf, T. J. A., Yang, J., Cordones, A. A., Wang, X. J., F. Nunes, J. P., Ledbetter, K., Lin, M., Kozina, M., DePonte, D. P., Biasin, E., Centurion, M., Crissman, C. J., Dunning, M., Guillet, S., Jobe, K., Liu, Y., Mo, M., Shen, X., Sublett, R., Weathersby, S., Yoneda, C., Wolf, T. J. A., Yang, J., Cordones, A. A., and Wang, X. J.

Abstract

The conversion of light into usable chemical and mechanical energy is pivotal to several biological and chemical processes, many of which occur in solution. To understand the structure–function relationships mediating these processes, a technique with high spatial and temporal resolutions is required. Here, we report on the design and commissioning of a liquid-phase mega-electron-volt (MeV) ultrafast electron dif- fraction instrument for the study of structural dynamics in solution. Limitations posed by the shallow penetration depth of electrons and the resulting information loss due to multiple scattering and the technical challenge of delivering liquids to vacuum were overcome through the use of MeV electrons and a gas-accelerated thin liquid sheet jet. To demonstrate the capabilities of this instrument, the structure of water and its network were resolved up to the 3rd hydration shell with a spatial resolution of 0.6 Å; preliminary time-resolved experiments demonstrated a temporal resolution of 200 fs.

Published
2020

5. Selenium single-wavelength anomalous diffraction de novo phasing using an X-ray-free electron laser

Author

Hunter, M S, Hunter, M S, Yoon, C H, DeMirci, H, Sierra, R G, Dao, E H, Ahmadi, R, Askit, F, Aquila, A L, Ciftci, H, Guillet, S, Hayes, M J, Lane, T J, Liang, M, Lundstrom, U, Koglin, J E, Mgbam, P, Rao, Y, Zhang, L, Wakatsuki, S, Holton, J M, Boutet, S, Hunter, M S, Hunter, M S, Yoon, C H, DeMirci, H, Sierra, R G, Dao, E H, Ahmadi, R, Askit, F, Aquila, A L, Ciftci, H, Guillet, S, Hayes, M J, Lane, T J, Liang, M, Lundstrom, U, Koglin, J E, Mgbam, P, Rao, Y, Zhang, L, Wakatsuki, S, Holton, J M, and Boutet, S

Published
2016

6. Selenium single-wavelength anomalous diffraction de novo phasing using an X-ray-free electron laser

Author

Hunter, M S, Hunter, M S, Yoon, C H, DeMirci, H, Sierra, R G, Dao, E H, Ahmadi, R, Askit, F, Aquila, A L, Ciftci, H, Guillet, S, Hayes, M J, Lane, T J, Liang, M, Lundstrom, U, Koglin, J E, Mgbam, P, Rao, Y, Zhang, L, Wakatsuki, S, Holton, J M, Boutet, S, Hunter, M S, Hunter, M S, Yoon, C H, DeMirci, H, Sierra, R G, Dao, E H, Ahmadi, R, Askit, F, Aquila, A L, Ciftci, H, Guillet, S, Hayes, M J, Lane, T J, Liang, M, Lundstrom, U, Koglin, J E, Mgbam, P, Rao, Y, Zhang, L, Wakatsuki, S, Holton, J M, and Boutet, S

Published
2016

7. ILDS Newsletter No. 24

Author

Dalle, S., Parmentier, L., Moscarella, E., Phan, A., Argenziano, G., Demiriz, M., Reimann, E., Kingo, K., Karelson, M., Reemann, P., Loite, U., Keermann, M., Abram, K., Vasar, E., Silm, H., Kõks, S., Vaienti, L., Zilio, D., Di Matteo, A., Riccio, M., Marchesi, A., Tang, L., Li, J., Lin, X., Wu, W., Kang, K., Fu, W., Patrizi, A., Tabanelli, M., Grzeschik, K-H, Misciali, C., Neri, I., Happle, R., Ivanova, K., Itin, P., Haeusermann, P., Granström, S., Langenbruch, A., Augustin, M., Mautner, V-F, Köse, O., Huseynov, S., Cavalli, R., Buffon, R.B., de Souza, M., Colli, A.M., Gelmetti, C., Le Saché-de Peufeilhoux, L., Ingen-Housz-Oro, S., Hue, S., Sbidian, E., Valeyrie-Allanore, L., Ortonne, N., Roujeau, J.C., Wolkenstein, P., Chosidow, O., André, C., Rashtak, S., Gamble, G.L., Gibson, L.E., Pittelkow, M.R., Shi, T-W, Ren, X-K, Yu, H-X, Tang, Y-B, Gutierrez-Salmeron, M.T., Aneiros-Cachaza, J., Naranjo-Sintes, R., Thomas, L., Skov, P.S., Jensen, L.B., Maurer, M., Bindslev-Jensen, C., Tannert, L.K., Husein-ElAhmed, H., Seneschal, J., Guillet, S., Ezzedine, K., Taïeb, A., Milpied, B., Aneiros-Fernandez, J., Dalle, S., Parmentier, L., Moscarella, E., Phan, A., Argenziano, G., Demiriz, M., Reimann, E., Kingo, K., Karelson, M., Reemann, P., Loite, U., Keermann, M., Abram, K., Vasar, E., Silm, H., Kõks, S., Vaienti, L., Zilio, D., Di Matteo, A., Riccio, M., Marchesi, A., Tang, L., Li, J., Lin, X., Wu, W., Kang, K., Fu, W., Patrizi, A., Tabanelli, M., Grzeschik, K-H, Misciali, C., Neri, I., Happle, R., Ivanova, K., Itin, P., Haeusermann, P., Granström, S., Langenbruch, A., Augustin, M., Mautner, V-F, Köse, O., Huseynov, S., Cavalli, R., Buffon, R.B., de Souza, M., Colli, A.M., Gelmetti, C., Le Saché-de Peufeilhoux, L., Ingen-Housz-Oro, S., Hue, S., Sbidian, E., Valeyrie-Allanore, L., Ortonne, N., Roujeau, J.C., Wolkenstein, P., Chosidow, O., André, C., Rashtak, S., Gamble, G.L., Gibson, L.E., Pittelkow, M.R., Shi, T-W, Ren, X-K, Yu, H-X, Tang, Y-B, Gutierrez-Salmeron, M.T., Aneiros-Cachaza, J., Naranjo-Sintes, R., Thomas, L., Skov, P.S., Jensen, L.B., Maurer, M., Bindslev-Jensen, C., Tannert, L.K., Husein-ElAhmed, H., Seneschal, J., Guillet, S., Ezzedine, K., Taïeb, A., Milpied, B., and Aneiros-Fernandez, J.

Abstract

On the occasion of the 70th annual meeting of the American Academy of Dermatology in San Diego the ILDS Executive Committee hosted a cocktail reception in the evening of 18 March. The reception, held at the Marriott Hotel on an evening of several competing attractions, was well attended by friends of the ILDS, who stopped by for a drink and a chat. Jean Bolognia and Chris Griffiths acted as official ILDS meeters and greeters for the guests. Our president, Wolfram Sterry gave a short speech of welcome and provided an update for those present on the recent achievements of and plans for the ILDS. The announcement of the Berlin summit was particularly well received by our member societies. Jerry Shapiro then took the floor to apprise us of the arrangements for the Vancouver World Congress, these too were greeted with enthusiasm...

Published
2012

8. ILDS Newsletter No. 24

Author

Dalle, S., Parmentier, L., Moscarella, E., Phan, A., Argenziano, G., Demiriz, M., Reimann, E., Kingo, K., Karelson, M., Reemann, P., Loite, U., Keermann, M., Abram, K., Vasar, E., Silm, H., Kõks, S., Vaienti, L., Zilio, D., Di Matteo, A., Riccio, M., Marchesi, A., Tang, L., Li, J., Lin, X., Wu, W., Kang, K., Fu, W., Patrizi, A., Tabanelli, M., Grzeschik, K-H, Misciali, C., Neri, I., Happle, R., Ivanova, K., Itin, P., Haeusermann, P., Granström, S., Langenbruch, A., Augustin, M., Mautner, V-F, Köse, O., Huseynov, S., Cavalli, R., Buffon, R.B., de Souza, M., Colli, A.M., Gelmetti, C., Le Saché-de Peufeilhoux, L., Ingen-Housz-Oro, S., Hue, S., Sbidian, E., Valeyrie-Allanore, L., Ortonne, N., Roujeau, J.C., Wolkenstein, P., Chosidow, O., André, C., Rashtak, S., Gamble, G.L., Gibson, L.E., Pittelkow, M.R., Shi, T-W, Ren, X-K, Yu, H-X, Tang, Y-B, Gutierrez-Salmeron, M.T., Aneiros-Cachaza, J., Naranjo-Sintes, R., Thomas, L., Skov, P.S., Jensen, L.B., Maurer, M., Bindslev-Jensen, C., Tannert, L.K., Husein-ElAhmed, H., Seneschal, J., Guillet, S., Ezzedine, K., Taïeb, A., Milpied, B., Aneiros-Fernandez, J., Dalle, S., Parmentier, L., Moscarella, E., Phan, A., Argenziano, G., Demiriz, M., Reimann, E., Kingo, K., Karelson, M., Reemann, P., Loite, U., Keermann, M., Abram, K., Vasar, E., Silm, H., Kõks, S., Vaienti, L., Zilio, D., Di Matteo, A., Riccio, M., Marchesi, A., Tang, L., Li, J., Lin, X., Wu, W., Kang, K., Fu, W., Patrizi, A., Tabanelli, M., Grzeschik, K-H, Misciali, C., Neri, I., Happle, R., Ivanova, K., Itin, P., Haeusermann, P., Granström, S., Langenbruch, A., Augustin, M., Mautner, V-F, Köse, O., Huseynov, S., Cavalli, R., Buffon, R.B., de Souza, M., Colli, A.M., Gelmetti, C., Le Saché-de Peufeilhoux, L., Ingen-Housz-Oro, S., Hue, S., Sbidian, E., Valeyrie-Allanore, L., Ortonne, N., Roujeau, J.C., Wolkenstein, P., Chosidow, O., André, C., Rashtak, S., Gamble, G.L., Gibson, L.E., Pittelkow, M.R., Shi, T-W, Ren, X-K, Yu, H-X, Tang, Y-B, Gutierrez-Salmeron, M.T., Aneiros-Cachaza, J., Naranjo-Sintes, R., Thomas, L., Skov, P.S., Jensen, L.B., Maurer, M., Bindslev-Jensen, C., Tannert, L.K., Husein-ElAhmed, H., Seneschal, J., Guillet, S., Ezzedine, K., Taïeb, A., Milpied, B., and Aneiros-Fernandez, J.

Abstract

On the occasion of the 70th annual meeting of the American Academy of Dermatology in San Diego the ILDS Executive Committee hosted a cocktail reception in the evening of 18 March. The reception, held at the Marriott Hotel on an evening of several competing attractions, was well attended by friends of the ILDS, who stopped by for a drink and a chat. Jean Bolognia and Chris Griffiths acted as official ILDS meeters and greeters for the guests. Our president, Wolfram Sterry gave a short speech of welcome and provided an update for those present on the recent achievements of and plans for the ILDS. The announcement of the Berlin summit was particularly well received by our member societies. Jerry Shapiro then took the floor to apprise us of the arrangements for the Vancouver World Congress, these too were greeted with enthusiasm...

Published
2012

9. Anisotropic conductivity of silver thin films grown on silicon (100) vicinal surfaces

Author

López-Ríos, T., Briggs, A, Guillet, S., Baró, A. M., Luna, Mónica, López-Ríos, T., Briggs, A, Guillet, S., Baró, A. M., and Luna, Mónica

Abstract

The electrical conductivity between 4 and 300 K of Ag thin films (up to 30 mm grown at room temperature on Si(100) vicinal surfaces has been measured and their morphology imaged with an atomic force microscope. A noticeable anisotropy of the resistivity of the films which is related to the structure of the films has been found)

Published
1995

10. Climate response to the Samalas volcanic eruption in 1257 revealed by proxy records

Author

Guillet, S, Corona, C, Stoffel, M, Khodri, M, Lavigne, F, Ortega, P, Eckert, N, Sielenou, Pd, Daux, V, Churakova (Sidorova) O, Davi, N, Edouard, Jl, Masson-Delmott, V, Oppenheimer, C, Guillet, S, Corona, C, Stoffel, M, Khodri, M, Lavigne, F, Ortega, P, Eckert, N, Sielenou, Pd, Daux, V, Churakova (Sidorova) O, Davi, N, Edouard, Jl, Masson-Delmott, V, and Oppenheimer, C

Abstract

Текст статьи не публикуется в открытом доступе в соответствии с политикой журнала., The eruption of Samalas in Indonesia in 1257 ranks among the largest sulphur-rich eruptions of the Common Era with sulphur deposition in ice cores reaching twice the volume of the Tambora eruption in 1815). Sedimentological analyses of deposits confirm the exceptional size of the event, which had both an eruption magnitude and a volcanic explosivity index of 7. During the Samalas eruption, more than 40 km3 of dense magma was expelled and the eruption column is estimated to have reached altitudes of 43 km. However, the climatic response to the Samalas event is debated since climate model simulations generally predict a stronger and more prolonged surface air cooling of Northern Hemisphere summers than inferred from tree-ring based temperature reconstructions. Here, we draw on historical archives, ice-core data and tree-ring records to reconstruct the spatial and temporal climate response to the Samalas eruption. We find that 1258 and 1259 experienced some of the coldest Northern Hemisphere summers of the past millennium. However, cooling across the Northern Hemisphere was spatially heterogeneous. Western Europe, Siberia and Japan experienced strong cooling, coinciding with warmer-than-average conditions over Alaska and northern Canada. We suggest that in North America, volcanic radiative forcing was modulated by a positive phase of El Niño-Southern Oscillation. Contemporary records attest to severe famines in England and Japan, but these began prior to the eruption. We conclude that the Samalas eruption aggravated existing crisis, but did not trigger the famines.

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