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4 results on '"Quinteros-Cartaya, Claudia"'

1. Real-time Earthquake Monitoring using Deep Learning: a case study on Turkey Earthquake Aftershock Sequence

Author

Li, Wei, Koehler, Jonas, Chakraborty, Megha, Quinteros-Cartaya, Claudia, Ruempker, Georg, and Srivastava, Nishtha

Subjects
Physics - Geophysics
Abstract

Seismic phase picking and magnitude estimation are essential components of real time earthquake monitoring and earthquake early warning systems. Reliable phase picking enables the timely detection of seismic wave arrivals, facilitating rapid earthquake characterization and early warning alerts. Accurate magnitude estimation provides crucial information about the size of an earthquake and potential impact. Together, these steps contribute to effective earthquake monitoring, enhancing our ability to implement appropriate response measures in seismically active regions and mitigate risks. In this study, we explore the potential of deep learning in real time earthquake monitoring. To that aim, we begin by introducing DynaPicker which leverages dynamic convolutional neural networks to detect seismic body wave phases. Subsequently, DynaPicker is employed for seismic phase picking on continuous seismic recordings. To showcase the efficacy of Dynapicker, several open source seismic datasets including window format data and continuous seismic data are used for seismic phase identification, and arrival time picking. Additionally,the robustness of DynaPicker in classifying seismic phases was tested on the low magnitude seismic data polluted by noise. Finally, the phase arrival time information is integrated into a previously published deep learning model for magnitude estimation. This workflow is then applied and tested on the continuous recording of the aftershock sequences following the Turkey earthquake to detect the earthquakes, seismic phase picking and estimate the magnitude of the corresponding event. The results obtained in this case study exhibit a high level of reliability in detecting the earthquakes and estimating the magnitude of aftershocks following the Turkey earthquake.

Published
2022

3. The TsuJal Amphibious Seismic Network: a Passive-Source seismic Experiment in Western Mexico

Author

Nuñez-Cornu, Francisco, Córdoba, Diego, Bandy, William, Dañobeitia, Juan José, Mortera-Gutierrez, Carlos, Alarcon, Edgar, Nuñez, Diana, Quinteros Cartaya, Claudia Beatriz M., and Suarez-Plascencia, Carlos

Abstract

American Geophysical Union (AGU) Fall Meeting, 13-17 December 2021, New Orleans, The geodynamic complexity in the interaction between Rivera, Cocos, and North American plates, is mainly evidenced by a high seismicity rate that unfavorably is not well located. In the framework of the TsuJal Project, a study of the passive seismic activity was carried out in this region, using data with a temporal seismic network with 25 Obsidian stations, deployed along the states of Nayarit, Jalisco and Colima, including the Islas Marías, in addition to the Jalisco Seismic Network (RESAJ), and 10 OBS type LCHEAPO 2000 with four channels, deployed and recovered by the BO El Puma in an array from the Islas Marías to off coast of the border of Colima and Michoacan states, in the period from 19th April to 7th November 2016. These networks allowed registering more than 2000 oceanic and continental earthquakes in the region, and will permit us to improve the quality of locations and design procedures for routine RESAJ offshore seismicity location. During the observation period, a seismic sequence occurred in the area between the Mesoamerican Trench and the Paleo-Rivera Transform Fault from May 7 to July 13 that included 22 earthquakes with a magnitude greater than 4.0, and one of magnitude 6.3 on June 7. The relocation of this seismic sequence offers a new vision on local tectonics

Published
2020

4. The May 2016 Mw 5.6 Earthquake at Rivera Fault Zone

Author

Nuñez-Cornu, Francisco, Bandy, William, Córdoba, Diego, Dañobeitia, Juan José, Mortera-Gutierrez, Carlos, Nuñez, Diana, Alarcon, Edgar, Quinteros Cartaya, Claudia Beatriz M., and Suarez-Plascencia, Carlos

Abstract

American Geophysical Union (AGU) Fall Meeting, 9-13 December 2019, San Francisco, On May 7, an earthquake with MW = 5.6 took place in the contact area of the Rivera Plate, Cocos Plate and the Middle America Trench, subsequently occurred a seismic sequence with over 200 earthquakes until May 16. This seismic sequence was studied from the data collected during the TsuJal project. Between April and November 2016, seismic stations were recording onshore and offshore the passive seismicity in the area of Rivera Plate and Jalisco Block. The temporary seismic network (TSN) consisted of 25 Obsidian stations with a LE-3D MkIII sensor from the northern part of the state of Nayarit to the southern part of the state of Colima, including the Islas Marías. This network complemented the Jalisco Seismic Accelerometric Telemetric Network (RESAJ) reaching a total of 50 seismic stations deployed on land. In the offshore region, ten Ocean Bottom Seismometers (OBS) type LC2000SP with three short-term seismic and one pressure sensors were deployed by BO El Puma (UNAM) from the Islas Marías to the border between the states of Colima and Michoacán. The USGS located this seismic sequence north of the Rivera Fault Zone (RFZ) near the Mesoamerican Trench, while the locations obtained from the OBS network located it about 50 km south between the RFZ and the East Pacific Rise. Besides, the USGS reported a strike-slip fault focal mechanism, while our studies indicate a focal mechanism of thrust failure. In this work, an analysis of this sequence with 87 earthquakes occurred between May 7 and 11, 2016, recorded by three local seismic networks (RESAJ, TSN, and OBS) is presente

Published
2019

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