Article
Geochemistry & Geophysics
Chaoliang Wang, Chuntao Liang, Jiangtao Liao, Zhenxing Yao, Rui Xu, Yihai Yang
Summary: The Luxian earthquake in the inner Sichuan Basin, China revealed the seismogenic structure and mechanism through the analysis of aftershocks. The main shock ruptured fault systems within a thrust wedge in the sedimentary cover, and the localized stress concentration resulted from the inhomogeneous deformation of the cover. The aftershocks showed enhanced normal slip, but not enough to reverse the dominant slip direction of faults. The postseismic stress inversion revealed a temporary stress regime reversal from horizontal compression to favored normal slip.
EARTH AND PLANETARY SCIENCE LETTERS
(2023)
Article
Environmental Sciences
Valery Gitis, Alexander Derendyaev
Summary: Earthquakes require continuous monitoring, analysis, and forecasting to mitigate their risks. This paper presents a novel information technology using Earth remote sensing data for systematic regional earthquake prediction. The technology demonstrates successful application and utilizes two GIS platforms for automatic data loading, spatial analysis, and intuitive mapping tools.
Article
Geosciences, Multidisciplinary
Yuji Itoh, Anne Socquet, Mathilde Radiguet
Summary: This study examines the impact of aseismic slip on the seismic rupture process using the 2014 Iquique earthquake sequence as a case study. The findings show that aseismic slip can delay the propagation of the mainshock and promote the occurrence of largest aftershocks. This suggests that slowly slipping faults can play a crucial role in controlling the occurrence of large earthquakes.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Multidisciplinary Sciences
Jan Premus, Frantisek Gallovic, Jean-Paul Ampuero
Summary: This study utilized a Bayesian dynamic source inversion method to jointly analyze coseismic and postseismic observations of the 2014 South Napa earthquake, providing insights into how fault stress and friction properties affect the spatial separation between afterslip and coseismic slip, driving deep off-fault aftershocks and influencing rupture shapes.
Article
Geosciences, Multidisciplinary
Xiong Zhang, Miao Zhang, Xiao Tian
Summary: The article introduces a novel deep learning Earthquake Early Warning (EEW) system that can determine earthquake locations and magnitudes with high reliability as early as 4 seconds after the earliest P phase, utilizing continuous seismic waveform streams.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Environmental Sciences
Zhanhong Huang, Lei Xie, Lei Zhao, Wenbin Xu
Summary: In this study, we analyzed the crustal deformation after the 2014 Yutian earthquake using observations from multiple platforms and established a decay model to describe the spatiotemporal distribution of afterslip. The results showed that afterslip mainly manifested as left-lateral strike-slip movement, consistent with the co-seismic rupture. The spatiotemporal features of the aftershocks and afterslip have significant implications for analyzing seismic hazards at the southwestern end of the Altyn Tagh Fault.
Article
Geochemistry & Geophysics
Ying-Hui Yang, Hao-Liang Li, Qiang Chen, Jing Chen, Jyr-Ching Hu, Xiao-Yun Li, Qiang Xu
Summary: A new method of fault slip inversion is proposed in this study, which utilizes InSAR deformation differencing vector (IDV) as an independent constraint to mitigate the negative effect of atmospheric noise and improve the performance of earthquake source modeling. Experimental results using simulated InSAR data show that the proposed method significantly reduces slip residual by up to 65% compared to estimates based on the original InSAR observation. The method is then applied to investigate the coseismic faulting of the 2014 Napa, California earthquake, and it is found that the IDV-derived faulting model provides more accurate surface deformation prediction that is consistent with GPS observations, with an improvement in accuracy of approximately 28%.
JOURNAL OF GEODESY
(2023)
Article
Astronomy & Astrophysics
T. C. Tsai, H. K. Jhuang, Y. Y. Ho, L. C. Lee, W. C. Su, S. L. Hung, K. H. Lee, C. C. Fu, H. C. Lin, C. L. Kuo
Summary: This study successfully predicted earthquake occurrences in Taiwan within 30 days before they happened using deep learning methods and analyzing various data, including the ionospheric total electron content (TEC). The results showed a high accuracy rate in earthquake predictions.
EARTH AND SPACE SCIENCE
(2022)
Article
Geochemistry & Geophysics
Eleftheria Papadimitiou, Vasileios Karakostas, Constantinos Papazachos, Michael Foumelis, Anastasia Kiratzi, Christos Pikridas, Pavlos Bonatis, Anastasios Kostoglou, Christos Kourouklas, Emmanuel Scordilis, Stylianos Bitharis, Parthena Paradisopoulou, Areti Panou, Odysseas Galanis, Eleni Karagianni, Domenikos Vamvakaris, Ioanna Karagianni, Charalambos Kkallas, Nikolaos Chatzis, Alexandros Chatzipetros, Aristidis Fotiou, Chrisanthi Ventouzi, Ioannis Grendas, Despoina Kementzetzidou, George Karakaisis, Panagiotis Hatzidimitriou
Summary: The Northern Thessaly Basin in central Greece is a well-defined extensional basin in the Aegean Sea region, with faults oriented in an E-W direction. Recently, a series of earthquakes, including two main shocks and numerous aftershocks, occurred along the basin's northern margin. These events indicate a shift from the previously believed N-S extension to a NNE-SSW oriented extension. Using seismic and geodetic data, researchers studied the temporal and spatial evolution of the sequence, revealing the complexity of the seismic process and the activation of various fault segments.
GEOPHYSICAL JOURNAL INTERNATIONAL
(2023)
Article
Geosciences, Multidisciplinary
Simone Teloni, Chiara Invernizzi, Stefano Mazzoli, Pietro Paolo Pierantoni, Vincenzo Spina
Summary: The seismic sequence in the Durres region from late 2019 to early 2020 showed that the area is dominated by ENE-trending horizontal maximum compression with seismogenic sources mainly consisting of ENE-dipping thrust faults. Most earthquakes, including the main shock, originated within the basement, while shallow aftershocks tended to cluster around previously identified seismogenic structures within the sedimentary cover. These findings indicate a profound reconsideration of the seismotectonic setting in the region and the assessment of seismic hazard in densely populated areas of Albania.
JOURNAL OF THE GEOLOGICAL SOCIETY
(2021)
Article
Engineering, Civil
M. Khalid Saifullah, Christine E. Wittich
Summary: The study investigates the dynamic response of freestanding structures under real-world conditions by analyzing two statue-pedestal systems that overturned during the 2014 South Napa Earthquake. The comparison between numerical simulations and observed response reveals key details regarding the impact of soil at the base, contact stiffness, statue orientation, and ground motion directionality.
JOURNAL OF EARTHQUAKE ENGINEERING
(2022)
Article
Geochemistry & Geophysics
Yuqi Huang, Max Moorkamp, Ji Gao, Haijiang Zhang
Summary: On 3 August 2014, a destructive earthquake occurred in Ludian, Yunan, China, resulting in significant casualties. To understand the seismogenic structure of this earthquake, the study developed a three-dimensional joint inversion algorithm combining magnetotelluric data and seismic body wave arrival times. The models generated from this algorithm revealed low Vp/Vs ratios and resistivity in the upper crust of the main shock zone, as well as the presence of cracks/fractures, fluids, and high quartz contents. These findings suggest that fluids and high quartz contents may have played a role in promoting the Ludian earthquake. This study provides new evidence on how crustal properties influence the genesis of moderate to large earthquakes.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2023)
Article
Geochemistry & Geophysics
Yi GuiXi, Zhao Min, Long Feng, Liang MingJian, Wang MingMing, Zhou RongJun, Wang SiWei
Summary: On September 16, 2021, a 6.0 magnitude earthquake occurred in Luxian County, Luzhou City, Sichuan Province, causing three deaths and 159 injuries. The earthquake sequence had very few aftershocks with a significant magnitude difference, indicating an isolated earthquake sequence. The earthquake was caused by a thrusting event and may be controlled by a local stress field.
CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
(2021)
Article
Geochemistry & Geophysics
Yingfeng Zhang, Xinjian Shan, Wenyu Gong, Guohong Zhang, Chunyan Qu, Tao Li
Summary: This study investigates strain accumulation in the Kalpin fold-and-thrust belt (KFTB) of southwestern Tian Shan, China, using InSAR measurements, teleseismic body-waves, near-field strong motion data, and relocated aftershocks. The results show a vertical separation between the mainshock and aftershock cluster, with the former on a weak decollement and the latter on basement faults. Fluid flow and high pore pressure may have reduced fault strength and contributed to the evolution of the aftershock cluster. The compressive strain in the KFTB is accommodated by both thin- and thick-skin faulting and seismic deformation across the entire crustal thickness.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2023)
Article
Geosciences, Multidisciplinary
Zufeng Chang, Pin-liang Dong, Renmao Yuan, Jianjun Hou, Zhongtai He, Jianlin LI, Hao Chang
Summary: On May 5, 2014, a Mw 6.1 earthquake occurred in the Golden Triangle area in northern Thailand, causing significant damage to buildings and loss of lives. The earthquake was a strike-slip event and took place at the southwestern end of the Luang Namtha fault, suggesting that the fault may be responsible for this earthquake.
ACTA GEOLOGICA SINICA-ENGLISH EDITION
(2022)
Article
Geosciences, Multidisciplinary
Paola Passalacqua, Patrick Belmont, Dennis M. Staley, Jeffrey D. Simley, J. Ramon Arrowsmith, Collin A. Bode, Christopher Crosby, Stephen B. DeLong, Nancy F. Glenn, Sara A. Kelly, Dimitri Lague, Harish Sangireddy, Keelin Schaffrath, David G. Tarboton, Thad Wasklewicz, Joseph M. Wheaton
EARTH-SCIENCE REVIEWS
(2015)
Article
Geography, Physical
Luke A. Pangle, Stephen B. DeLong, Nate Abramson, John Adams, Greg A. Barron-Gafford, David D. Breshears, Paul D. Brooks, Jon Chorover, William E. Dietrich, Katerina Dontsova, Matej Durcik, Javier Espeleta, T. P. A. Ferre, Regis Ferriere, Whitney Henderson, Edward A. Hunt, Travis E. Huxman, David Millar, Brendan Murphy, Guo-Yue Niu, Mitch Pavao-Zuckerman, Jon D. Pelletier, Craig Rasmussen, Joaquin Ruiz, Scott Saleska, Marcel Schaap, Michael Sibayan, Peter A. Troch, Markus Tuller, Joost van Haren, Xubin Zeng
Article
Geosciences, Multidisciplinary
Stephen B. DeLong, James J. Lienkaemper, Alexandra J. Pickering, Nikita N. Avdievitch
Article
Geochemistry & Geophysics
S. Hecker, V. E. Langenheim, R. A. Williams, C. S. Hitchcock, S. B. DeLong
BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA
(2016)
Article
Geography, Physical
Laura M. Norman, Joel B. Sankey, David Dean, Joshua Caster, Stephen DeLong, Whitney DeLong, Jon D. Pelletier
Article
Geography, Physical
Stephen B. DeLong, Carol S. Prentice, George E. Hilley, Yael Ebert
EARTH SURFACE PROCESSES AND LANDFORMS
(2012)
Article
Geosciences, Multidisciplinary
Stephen B. DeLong, Joel P. L. Johnson, Kelin X. Whipple
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
(2014)
Article
Geosciences, Multidisciplinary
Jon D. Pelletier, Stephen B. DeLong, Caitlin A. Orem, Patricio Becerra, Kathleen Compton, Katrina Gressett, John Lyons-Baral, Luke A. McGuire, Jamie L. Molaro, Joshua C. Spinler
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
(2012)
Article
Geochemistry & Geophysics
Robert Sare, George E. Hilley, Stephen B. DeLong
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2019)
Article
Geosciences, Multidisciplinary
Chelsea Phipps Scott, Stephen B. DeLong, J. Ramon Arrowsmith
GEOPHYSICAL RESEARCH LETTERS
(2020)
Article
Astronomy & Astrophysics
S. B. DeLong, M. N. Hammer, Z. T. Engle, E. M. Richard, A. J. Breckenridge, K. B. Gran, C. E. Jennings, A. Jalobeanu
Summary: Extreme precipitation events can cause various impacts, but characterizing them accurately is challenging. This study uses remote mapping techniques to document and anticipate the effects of an extreme rain event in northeastern Minnesota. The results show significant sediment erosion and deposition, providing important insights for predicting the impacts of future storm events.
EARTH AND SPACE SCIENCE
(2022)
Review
Geosciences, Multidisciplinary
Andrea Donnellan, Ramon Arrowsmith, Stephen DeLong
Article
Geosciences, Multidisciplinary
A. I. Gevaert, A. J. Teuling, R. Uijlenhoet, S. B. DeLong, T. E. Huxman, L. A. Pangle, D. D. Breshears, J. Chorover, J. D. Pelletier, S. R. Saleska, X. Zeng, P. A. Troch
HYDROLOGY AND EARTH SYSTEM SCIENCES
(2014)
Article
Geosciences, Multidisciplinary
G. -Y. Niu, D. Pasetto, C. Scudeler, C. Paniconi, M. Putti, P. A. Troch, S. B. DeLong, K. Dontsova, L. Pangle, D. D. Breshears, J. Chorover, T. E. Huxman, J. Pelletier, S. R. Saleska, X. Zeng
HYDROLOGY AND EARTH SYSTEM SCIENCES
(2014)