Results 21 to 30 of about 3,142,448 (252)
An earthquake focal mechanism catalog for source and tectonic studies in Mexico from February 1928 to July 2022 [PDF]
Earth System Science Data, 2023 We present a focal mechanism catalog for earthquakes that occurred in Mexico and surrounding areas reported from February 1928 to July 2022. The magnitude of the events varies from −0.9 to 8.2.
Q. Rodríguez-Pérez, F. R. Zúñiga
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First Focal Mechanisms of Marsquakes [PDF]
Journal of Geophysical Research: Planets, 2021 AbstractSince February 2019, NASA's InSight lander is recording seismic signals on the planet Mars, which, for the first time, allows to observe ongoing tectonic processes with geophysical methods. A number of Marsquakes have been located in the Cerberus Fossae graben system in Elysium Planitia and further west, in the Orcus Patera depression.
Nienke Brinkman +24 more
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Late Cenozoic Stress State in Gulf of Güllük and Surroundings, SW Anatolia
Journal of Advanced Research in Natural and Applied Sciences, 2021 This study was performed with the aim of revealing the Late Cenozoic stress state of the Gulf of Güllük and close surroundings. In this study, the tectonic regime and stress states from the Pliocene to the present day were determined.
Erdem Gündoğdu +2 more
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Focal mechanism catalog for Southern California
, 2021 focal mechanism ...
Cheng, Y (via Mendeley Data)
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Геодинамика и тектонофизика, 2020 The study is focused on searching for spatial regularities in the occurrence of earthquake hypocenters in different geological settings in Northern Armenia. Tectonic-geomorphological indices are applied to define the tectonic activity of blocks composing
K. S. Ghazaryan, R. S. Sargsyan
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Focal mechanism determination for voIcanic microearthquakes
Annals of Geophysics, 1994 Classical methods to infer focal mechanisms from first P wave motions are of limited use for the analysis of small magnitude events occurring in volcanic areas, due to structure complexity.
G. De Natale
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SEISMOTECTONIC DEFORMATION OF THE LITHOSPHERE IN THE PAMIR AND ADJACENT TERRITORIES
Геодинамика и тектонофизика, 2020 В работе исследована область Памира и Тянь-Шаня, которая является зоной внутриконтинентальных столкновений и представляет большой интерес для изучения геодинамических процессов, протекающих в земной коре и литосфере. Указанная область исследована методом
N. A. Sycheva, A. N. Mansurov
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Earthquake focal mechanisms with distributed acoustic sensing [PDF]
Nature Communications, 2023 AbstractEarthquake focal mechanisms provide critical in-situ insights about the subsurface faulting geometry and stress state. For frequent small earthquakes (magnitude< 3.5), their focal mechanisms are routinely determined using first-arrival polarities picked on the vertical component of seismometers. Nevertheless, their quality is usually limited
Jiaxuan Li +3 more
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Mine earthquake mechanism of extremely thick strata based on focalmemchanism analysis
Meitan xuebao, 2023 In the Ordos mining area of North China, the Jurassic coal seam is commonly overlain by extremely thick cretaceous sandstone strata. Based on the seismic displacement field and relative moment tensor inversion method, this paper investigates the mine ...
Xianxi BAI +6 more
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Dizhen xuebao, 2022 安德逊理论表明地震的共轭破裂现象可以用库仑准则解释，断层面夹角与地下岩石内摩擦系数之间存在简单的定量关系。基于本文提出的通过共轭地震计算介质内摩擦系数的方法，对国内外19个具有X形或不完整的X形（L形）共轭破裂特征的地震进行系统性分析，与震源机制、区域应力轴方向等资料进行对比，确定共轭断层面，进而确定共轭面夹角并计算岩石的内摩擦系数。研究结果进一步证实了天然地震的共轭破裂与实验室岩石破裂具有较好的一致性，给出了库仑准则与安德逊理论在大尺度下也成立的证据 ...
Anjian Wang, Yun-tai Chen
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