Focal mechanisms of earthquakes and stress field of the crust in Mongolia and its surroundings
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dc.contributor.author | Radziminovich Natalia A. | |
dc.contributor.author | Bayar Gangaadorj | |
dc.contributor.author | Miroshnichenko Andrei I. | |
dc.contributor.author | Demberel Sodnomsambuu | |
dc.contributor.author | Ulziibat Monkhoo | |
dc.contributor.author | Ganzorig Davaasuren | |
dc.contributor.author | Lukhnev Andrei V. | |
dc.date.accessioned | 2019-12-18T12:18:34Z | |
dc.date.available | 2019-12-18T12:18:34Z | |
dc.date.issued | 2016 | |
dc.identifier | https://cyberleninka.ru/article/n/focal-mechanisms-of-earthquakes-and-stress-field-of-the-crust-in-mongolia-and-its-surroundings | |
dc.identifier | Федеральное государственное бюджетное учреждение науки Институт земной коры Сибирского отделения Российской академии наук | |
dc.identifier.citation | Геодинамика и тектонофизика, 2016, 7, 1 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/9239 | |
dc.description.abstract | We have compiled and analyzed earthquake focal solutions for the territory of Mongolia and its surroundings in order to reveal a spatial variability of stress orientation and stress regimes of the crust. According to the stress inversion results, the SHmax is turning from W-E in the eastern Mongolia to SW-NE in the Gobi Altay and the central Mongolia, and then to S-N in the western part of the region. Comparison with data derived from GPS measurements shows that directions of the strain axes revealed by the geodetic and seismological observations are generally consistent. A contradiction is found for the Bolnai zone where results of GPS estimation indicate the predominance of extension (in the SE-NW direction), whereas earthquake data for the longer period of seismic observations reveal compression. Compression in this zone is mainly due to the Tsetserleg-Bolnai earthquakes contribution; however, a part of the recent data on focal mechanisms fits an extensional stress field with the NNW orientated extension axis. These data are in accordance with some published works which suggest a transtensive field from some structural geology studies in the eastern part of the Bolnai zone. The paper is supplemented with a list of M³4.5 earthquake fault plane solutions and unpublished focal mechanisms for some M£4.5 earthquakes of the northern Mongolia and the southern Baikal region. | |
dc.publisher | Федеральное государственное бюджетное учреждение науки Институт земной коры Сибирского отделения Российской академии наук | |
dc.subject | MONGOLIA | |
dc.subject | EARTHQUAKE | |
dc.subject | FAULT PLANE SOLUTION | |
dc.subject | TECTONIC STRESS FIELD | |
dc.subject | GPS MEASUREMENTS | |
dc.subject | МОНГОЛИЯ | |
dc.subject | ЗЕМЛЕТРЯСЕНИЕ | |
dc.subject | МЕХАНИЗМ ОЧАГА | |
dc.subject | ПОЛЕ ТЕКТОНИЧЕСКИХ НАПРЯЖЕНИЙ | |
dc.subject | GPS-ИЗМЕРЕНИЯ | |
dc.title | Focal mechanisms of earthquakes and stress field of the crust in Mongolia and its surroundings | |
dc.type | text | |
dc.type | Article |
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