Results 21 to 30 of about 7,593,860 (323)

Moment tensor inversion implementation in determining focal mechanism solution of Palu-Koro and Matano fault events: processing strategy

open access: yesIOP Conference Series: Earth and Environment, 2023
Earthquake focal mechanisms are helpful in analyzing seismotectonic features in a specific area, as they can depict subsurface structures. Earthquake focal mechanism solution can result from the first polarity or moment tensor inversion method.
D. Kusumawati   +13 more
semanticscholar   +1 more source

Relocation and focal mechanisms of the 2021 Wuzhong-Lingwu ML3.6 seismic swarm

open access: yes地震科学进展, 2022
From July 18 to August 7 in 2021, a significant activity of ML3.6 earthquake swarm occurred in Wuzhong-Lingwu area, Ningxia. In this paper, the earthquake swarm are relocated using the multi-step locating method.
Yingcai Xu, Xianwei Zeng, Guofu Luo
doaj   +1 more source

Source parameters of the MS4.0 Lingwu earthquake on November 18th, 2021

open access: yes地球与行星物理论评, 2022
An MS4.0 earthquake occurred in Lingwu, Yinchuan City, Ningxia Hui Autonomous Region at 20:42:54 BJT on November 18th, 2021. It was felt by almost all people in Lingwu and its surrounding area and attracted considerable concern in the society.
Yingcai Xu, Xianwei Zeng
doaj   +1 more source

An Iterative Linear Method with Variable Shear Stress Magnitudes for Estimating the Stress Tensor from Earthquake Focal Mechanism Data: Method and Examples

open access: yesBulletin of The Seismological Society of America (BSSA), 2022
Earthquake focal mechanism data provide information about the stress state at the origin of earthquakes. The inversion methods that are commonly used to infer the stress tensor from focal mechanisms have varying complexity but always rely on a number ...
É. Beaucé   +2 more
semanticscholar   +1 more source

Seismicity-based 3D model of ruptured seismogenic faults in the North-South Seismic Belt, China

open access: yesFrontiers in Earth Science, 2023
The North–South Seismic Belt produces the most frequent strong earthquakes in the Chinese continental region, such as the MS 8.0 Wenchuan earthquake on 12 May 2008 and Ms 7.0 Lushan earthquake on 20 April 2013.
Yilin Rong   +4 more
doaj   +1 more source

Focal Mechanism and Seismogenic Structure of the MS 5.1 Qingbaijiang Earthquake on February 3, 2020, Southwestern China

open access: yesFrontiers in Earth Science, 2021
The 3 February 2020 MS 5.1 Qingbaijiang earthquake, southwestern China, is the closest recorded MS ≥ 5.0 event to downtown Chengdu City to date, with an epicentral distance of only 38 km. Here we analyze seismic data from the Sichuan and Chengdu regional
Min Zhao   +5 more
doaj   +1 more source

滇西北地区现今构造应力状态及其与地震的关系

open access: yesDizhen xuebao, 2022
基于搜集到的2000—2018年滇西北地区MS≥3.0地震的震源机制解,运用线性叠加反演法进行应力场反演,分析了滇西北地区现今的构造应力状态,进一步探讨了应力张量方差的时空分布与地震活动的关系。结果显示:① 滇西北地区地震的震源机制解类型复杂,主要以走滑型(46%)为主,正断型(27%)次之;② 研究区的构造应力场具有整体的一致性和局部的非均匀性,呈现为NNW向挤压和ENE向拉张的走滑型应力结构,说明研究区受到来自NNW向的水平挤压作用,对该地区上地壳运动和断裂活动起主导作用;③ ...
Wenjie Fan, Xiaofeng Cui, Xiaoyan Zhao
doaj   +1 more source

A focal mechanism catalog for Ridgecrest sequence derived with deep learning algorithms

open access: yes, 2020
Data format of the focal mechanism catalog in the Ridgecrest area Column Information 1 Year 2 Month 3 Day 4 Hour 5 Minute 6 Second 7 Event ID 8 Latitude 9 Longitude 10 Depth 11 Magnitude 12 Strike 13 Dip 14 Rake 15 1st nodal plane uncertainty 16 2nd ...
Cheng, Y
core   +2 more sources

The reliability of reported depths of some earthquake sequences in Northwestern Greece (Epirus and Corfu Island) and the geodynamic situation of the area

open access: yesAnnals of Geophysics, 1996
The study of the earthquakes of the rectangle with coordinates 39°-40°N 19°-21°E is very important for a better understanding of the geodynamics of this area.
B. Muço
doaj   +1 more source

Focal mechanism catalog for Southern California

open access: yes, 2021
focal mechanism ...
Cheng, Y (via Mendeley Data)   +1 more
core   +1 more source

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