Results 21 to 30 of about 74 (43)

The electromagnetic anomalies recorded by CSES during Yangbi and Madoi earthquakes occurred in late May 2021 in west China

Natural Hazards Research, 2022
Abstracts: This work analyzed the electromagnetic field (EM) anomalies recorded by the electric field detector (EFD) and the search coil magnetometer (SCM) onboard the China Seismo-Electromagnetic Satellite (CSES) during the two earthquakes (EQ), which are the Yangbi Ms6.4 EQ on May 21 (China Standard Time, CST) and the Madoi Ms7.4 EQ on May 22 (CST ...
Qiao Wang, Jianping Huang, Shufan Zhao, Zeren Zhima, Rui Yan, Jian Lin, Yanyan Yang, Wei Chu, Zhenxia Zhang, Hengxin Lu, Song Xu, Dapeng Liu, Feng Guo, Na Zhou, Qiao Tan, Wenjing Li, He Huang, Jie Wang, Xiaoying Sun, Xuhui Shen   +19 more
openaire   +2 more sources

2021年玛多MW7.4地震强震加载及其对周围地区应力扰动的影响

Dizhen xuebao, 2023
2021年5月22日在青海玛多发生MW7.4地震，为了探究玛多地震的不同滑动模型对周围地区及断层应力的加卸载作用，本文首先以GNSS数据为约束，结合中国地震局地质研究所公布的玛多地震同震滑动模型（模型A）断层面几何结构反演获得同震滑动模型（模型C），再分别利用模型A、模型B（USGS）、模型C计算玛多地震对周围地区及断层的应力加卸载作用。结果显示：① 模型C矩震级为MW7.46，最大滑动量为3.39 m，主体破裂位于0—10 km深度范围，整体破裂东侧大于西侧，滑动分布相对于模型A也更加均匀平滑 ...
Shuaipeng Wang, Keke Xu, Xiaoyi Wang
doaj   +1 more source

2021年5月22日玛多MS7.4地震震前岩石圈磁场变化特征分析

Dizhen xuebao, 2021
本文利用2019年和2020年两期的全国流动地磁矢量数据，针对玛多MS7.4地震震中附近的岩石圈磁场空间分布，分析研究了岩石圈磁场各个分量的震前变化特征。结果表明，玛多MS7.4地震发生前，震中附近的岩石圈磁场分量均发生了不同程度的变化：震中位于各分量的弱变化区域和零变线附近；震中位于各分量的高梯度带和低梯度带之间。本文证实了地震发生前会引起岩石圈磁场变化这一现象，并总结了震前地磁分量的变化特征，为今后强地震（尤其是M≥7.0地震）的震磁关系研究提供了一个震例参考。
Chao Dong, Bin Chen, Jiehao Yuan, Zhendong Wang, Can Wang   +4 more
doaj   +1 more source

The 2021 Mw 7.3 Madoi, China earthquake: Segmented supershear ruptures observed in an immature strike-slip fault

, 2022
The Dataset contain clipped waveforms, relocation earthquake catalog and contrained grid points.
Cheng Chuang, Wang Dun, Yao Qiang, Fang Lihua, Huang Zihao, Liu Tonghui, Wang Zhifeng, Huang Xiaolin   +7 more
openaire   +2 more sources

The 2021 Mw 7.3 Madoi, China earthquake: Segmented supershear ruptures observed along an immature strike-slip fault

, 2022
The dataset contains restored waveforms of mainshocks in Section 2, relocation earthquake sequence by hypoDD in Section 2, and fault line used in backprojection in Section 3.
Cheng Chuang, Wang Dun, Yao Qiang, Fang Lihua, Xu Shiqing, Huang Zihao, Liu Tonghui, Wang Zhifeng, Huang Xiaolin   +8 more
openaire   +1 more source

Pre-seismic geomagnetic fusion anomaly extraction based on Spatially Weighted Non-negative Tensor Factorization [PDF]

Natural Hazards and Earth System Sciences
Earthquake preparation processes are known to generate geomagnetic anomalies in some cases. Existing methods for extracting pre-seismic geomagnetic anomalies from multi-station observations are limited by the lack of physically meaningful constraints ...
B. Yang, K. Zhu, T. Wang, D. Zhang, W. Chen, Y. Zhang, P. Wang, X. Li, Y. Cheng   +8 more
doaj   +1 more source

The 2021 Mw 7.3 Madoi, China Earthquake: Transient Supershear Ruptures Observed along an Immature Strike-slip Fault

, 2022
The dataset contains clipped waveforms (the original and restored waveforms) of mainshocks in Section 2, the seismic data downloaded from CENC in Section 2, relocation earthquake sequence by hypoDD in Section 2, and fault line used in backprojection in Section 3.
Chuang, Cheng, Dun, Wang, Qiang, Yao, Lihua, Fang, Shiqing, Xu, Zihao, Huang, Tonghui, Liu, Zhifeng, Wang, Xiaolin, Huang   +8 more
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Distribution of Interseismic Coupling Along the Maidan Fault in Tianshan Before the 2024 Mw 7.0 Wushi Earthquake

Geophysical Research Letters, Volume 51, Issue 24, 28 December 2024.
Abstract Despite historically low seismic activity on the Maidan Fault (MDF), the sudden Mw 7.0 Wushi earthquake in early 2024 underscores the urgent need to assess the seismic risk on this fault. This study utilizes Global Navigation Satellite System and Interferometric Synthetic Aperture Radar data to image the spatial distribution of interseismic ...
Xiaohang Wang, Caijun Xu, Yangmao Wen, Xiong Zhao, Shuai Wang, Guangyu Xu   +5 more
wiley   +1 more source

Frontiers in Chinese seismology: Synthesizing innovations from the 18th Seismological Society of China Conference (SSC 2023)

Earthquake Research Advances
The 18th Academic Conference of the Seismological Society of China was held in Guiyang, China, on August 7, 2023, fostering academic exchanges on the latest advancements in earthquake science. The conference featured 170 abstracts and nearly 300 academic
Xiangli He, Tao Li, Qinxia Wang, Ziyue Wang, Zhaoning Chen, Chong Xu   +5 more
doaj   +1 more source

Determination of stress state based on coupling characteristics of load/unload response ratio and outgoing longwave radiation before large earthquakes

Frontiers in Earth Science
The Load/Unload Response Ratio (LURR) is a seismic prediction method based on the dynamic evolution of the stress-strain relationship of rocks. By adopting Benioff strain as the response indicator, an in-depth analysis was conducted on the LURR anomalies
Yu Lei, Yu Lei, Li Jianyong, Yu Chen, Zhang Haizhen, Hong Dequan, Ma Weiyu   +6 more
doaj   +1 more source