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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

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

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

Fine relocation, mechanism, and tectonic indications of middle-small earthquakes in the Central Tibetan Plateau

open access: yesEarth and Planetary Physics, 2018
The medium-small earthquakes that occurred in the middle part of Tibetan Plateau (32°N–36°N, 90°E–93°E) from August 2016 to June 2017 were relocated using the absolute earthquake location method Hypo2000.
YuLan Li   +5 more
doaj   +1 more source

Broadband Waveform Modeling Over a Dense Seismic Network [PDF]

open access: yes, 2006
We developed a "two-way" calibration technique for studying clustered events, particularly their mechanisms and rupture directivities. First, we demonstrate that the magnitude 4 events with known source mechanisms can be used to calibrate the path ...
Tan, Ying
core   +1 more source

The 2018 MS 5.9 Mojiang Earthquake: Source model and intensity based on near-field seismic recordings

open access: yesEarth and Planetary Physics, 2019
On September 8, 2018, an MS 5.9 earthquake struck Mojiang, a county in Yunnan Province, China. We collect near-field seismic recordings (epicentral distances less than 200 km) to relocate the mainshock and the aftershocks within the first 60 hours to ...
Xu Zhang   +4 more
doaj   +1 more source

Focal mechanism inversion of the 2018 MW7.1 Anchorage earthquake based on high-rate GPS observation

open access: yesGeodesy and Geodynamics, 2021
The MW7.1 Anchorage earthquake is the most destructive earthquake since the 1964 MW9.2 great Alaska earthquake in the United States. In this study, high-rate GPS data and near-field broadband seismograms are used in separate and joint inversions by the ...
Yanhao Zhang   +3 more
doaj   +1 more source

Study on tectonic stress field in Yingjiang area based on multi-focal mechanism solution sequence

open access: yes地震科学进展, 2021
In this paper,a total of 162 focal mechanism solutions are collected from several focal mechanism solution sequences in Yingjiang area,and the tectonic stress field inversion is carried out from Sudian fault to Dayingjiang fault.
Bing Feng   +4 more
doaj   +1 more source

Seismic analysis of the Xiluodu reservoir area and insights into the geometry of seismogenic faultsKey points

open access: yesEarthquake Science, 2022
The Xiluodu (XLD) reservoir is the second largest reservoir in China and the largest in the Jinsha River basin. The occurrence of two M > 5 earthquakes after reservoir impoundment has aroused great interest among seismologists and plant operators.
Hongfu Lei   +5 more
doaj   +1 more source

The earthquake monitoring system in the South China Sea Tsunami Advisory Center

open access: yes地震科学进展, 2022
This paper briefly reviewed the initiation steps and developments of the South China Sea Region Tsunami Warning and Mitigation Systems. In addition, we highlighted the structure and basic functions of the earthquake monitoring and processing system of ...
Zhiguo Xu   +3 more
doaj   +1 more source

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