Results 71 to 80 of about 381 (185)

Impact of Optical Imagery and Topography Data Resolution on the Measurement of Surface Fault Displacement Using Sub‐Pixel Image Correlation

Earth and Space Science, Volume 12, Issue 4, April 2025.
Abstract The amount and spatial distribution of surface displacement that occurs during an earthquake are critical information to the understanding of the earthquake source and rupture processes. However, the earthquake surface displacement occurs over wide regions, includes multiple components that affect the ground surface at different spatial scales,
Solène L. Antoine, Zhen Liu
wiley   +1 more source

Slip Deficit Rate and Seismic Potential on Crustal Faults in Tibet

Geophysical Research Letters, Volume 52, Issue 1, 16 January 2025.
Abstract Quantifying slip deficit rates on active faults in Tibet is essential for understanding fault kinematics and assessing seismic hazards, but has not been fully characterized, particularly on secondary faults. In this study, we integrate an updated interseismic Global Navigation Satellite Systems velocity field from 4,458 stations across ...
Yanchuan Li, Xinjian Shan, Chunyan Qu, Guohong Zhang, Xuening Wang, Haicheng Xiong   +5 more
wiley   +1 more source

Coseismic Shallow Slip Deficit Accounted for by Diffuse Off‐Fault Deformation

Geophysical Research Letters, Volume 51, Issue 24, 28 December 2024.
Abstract Earthquake ruptures produce fault slip and kilometer‐wide diffuse deformation of the host rocks. However, the origin of the diffuse deformation and its role in the rupture process are debated. We produce a refined slip model for the 2019 Ridgecrest, California, earthquakes, and analyze the relations between down‐dip rupture process, and ...
Solène L. Antoine, Yann Klinger, Kang Wang, Roland Bürgmann   +3 more
wiley   +1 more source

Supershear Rupture During the 2021 M_W 7.4 Maduo, China, Earthquake

Geophysical Research Letters, 2022
AbstractCombined with the multi‐array back‐projection and finite‐fault joint inversion methods, we investigate the detailed spatiotemporal rupture complexity of the 2021 MW 7.4 Maduo earthquake using seismic and geodetic data. Our results reveal that this earthquake ruptured bilaterally 170 km long fault segments with a duration of 38 s.
Xu Zhang, Wanpeng Feng, Hailin Du, Sergey Samsonov, Lei Yi   +4 more
openaire   +1 more source

Role of Poroelasticity and Viscoelasticity during the Postseismic Deformation of the 2021 Mw 7.4 Maduo, China, Earthquake

Seismological Research Letters, 2023
Abstract The 2021 Mw 7.4 Maduo earthquake within the Bayan Har block allows us to understand the lithospheric mechanical properties in northeastern Tibet. We analyze possible postseismic processes by modeling the six-month postseismic deformation from Interferometric Synthetic Aperture Radar data.
Xiongwei Tang, Rumeng Guo, Jianqiao Xu, Yong Zheng   +3 more
openaire   +2 more sources

Coarse-graining research of the thermal infrared anomalies before earthquakes in the Sichuan area on Google Earth engine [PDF]

, 2023
Seismo-induced Thermal infrared (TIR) anomalies has been proposed as a significant precursor of earthquakes. Several methods have been proposed to detect Thermal infrared anomalies that may be associated with earthquakes.
Chengxiang Zhan, Chengxiang Zhan, Linlin Zhang, Linlin Zhang, Mona Allam, Mona Allam, Pengcheng Wu, Pengcheng Wu, Qingyan Meng, Qingyan Meng, Xinli Hu, Xinli Hu, Ying Zhang   +12 more
core   +1 more source

基于改进两步差法的玛多MS7.4地震微波异常研究

Dizhen xuebao, 2023
针对2011年提出的两步差法在地震微波异常提取中的不足，提出了改进两步差法，该方法通过使用层次聚类和小波分析两种算法，克服了原方法中未考虑不同地物类型引起的亮温差异、亮温背景场不够稳健等问题，从而使异常结果在空间形态和异常幅度上更加合理，并将该方法应用于2021年5月22日青海省玛多县MS7.4地震的微波异常提取。结果显示，玛多地震前三个月出现了一条长约900 km、增温幅值达12 K的NE向亮温增温条带，与2010年4月14日MS7.1玉树地震前异常特征在空间分布和演化特征上均有很高的相似性。此外 ...
Shanjun Liu, Meiyi Ji, Limei Song, Lianhuan Wei   +3 more
doaj   +1 more source

Repurposing deep closed mines as seismic forecasting research platforms [PDF]

Seismic forecasting remains constrained by surface noise and low spatial resolution, limiting reproducible predictions. Although deep borehole stations and underground laboratories improve conditions, they face high costs, sparse coverage, and narrow ...
Cai, Meifeng, Gorjian, Mostafa, Li, Peng, Li, Yatao, Tang, Chenyu, Zhang, Yuezheng   +5 more
core   +1 more source

Strain Partitioning, Interseismic Coupling, and Shallow Creep Along the Ganzi‐Yushu Fault From Sentinel‐1 InSAR Data

Geophysical Research Letters, Volume 51, Issue 21, 16 November 2024.
Abstract The Ganzi‐Yushu fault (GYF) is one of the most seismically active fault systems in eastern Tibet, having experienced five M > 7.0 earthquakes over the past 300 years. Here, we use Sentinel‐1 InSAR data spanning from 2014 to 2023 to derive the interseismic velocity fields along the GYF.
Jianfeng Cai, Yangmao Wen, Kefeng He, Xiaohang Wang, Caijun Xu   +4 more
wiley   +1 more source

Characteristics of regional tectonic stress field in Wenchuan area and the effect of Wenchuan MS8.0 earthquake on surrounding major fault surfaces

地震科学进展, 2022
To analyze the influence of the 2008 Wenchuan MS8.0 earthquake on later earthquakes and the characteristics of the tectonic stress field in the seismogenic region, we first used 1660 source mechanism solutions of the Wenchuan earthquake and its ...
Jin He, Xin Xu, Biao Wu, Xiaolei Liu, Donghui Yang, Tong Lu   +5 more
doaj   +1 more source