2022年1月8日青海门源MS6.9地震序列重定位和震源机制解研究
2022年1月8日青海省海北州门源县发生MS6.9地震,震后产生了长约22 km的地表破裂带,青海、甘肃和宁夏等多地震感强烈。本文基于区域地震台网资料,通过多阶段定位方法对门源MS6.9地震早期序列(2022年1月8日至12日)进行了重定位,并利用gCAP方法反演了主震和MS≥3.4余震的震源机制和震源矩心深度,计算了现今应力场体系在门源MS6.9地震震源机制两个节面产生的相对剪应力和正应力。结果表明:门源MS6.9地震的初始破裂深度为7.8 km,震源矩心深度为4 km ...
Yingcai Xu, Xiangyun Guo, Lili Feng
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Present-day Mars' seismicity predicted from 3-D thermal evolution models of interior dynamics [PDF]
©2018. American Geophysical UnionThe Interior Exploration using Seismic Investigations, Geodesy and Heat Transport mission, to be launched in 2018, will perform a comprehensive geophysical investigation of Mars in situ.
Breuer, D. +8 more
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Taiwan is located at an active plate boundary and prone to earthquake hazards. To evaluate the island’s seismic risk, the Taiwan Earthquake Model (TEM) project, supported by the Ministry of Sciences and Technology, evaluates earthquake hazard, risk, and ...
J. Bruce H. Shyu +4 more
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Subparallel thrust and normal faulting in Albania and the roles of gravitational potential energy and rheology contrasts in mountain belts [PDF]
The active tectonics of Albania and surrounding regions, on the eastern margin of the Adriatic Sea, is characterized by subparallel thrust and normal faulting which, we suggest, is likely to be related to gravitational potential energy contrasts between ...
Boait, Fran +4 more
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Seismicity relocation and fault structure near the Leech River Fault Zone, southern Vancouver Island [PDF]
Relatively low rates of seismicity and fault loading have made it challenging to correlate microseismicity to mapped surface faults on the forearc of southern Vancouver Island.
Li, Ge +3 more
core +1 more source
Deep ductile shear localization facilitates near-orthogonal strike-slip faulting in a thin brittle lithosphere [PDF]
Some active fault systems comprise near-orthogonal conjugate strike-slip faults, as highlighted by the 2019 Ridgecrest and the 2012 Indian Ocean earthquake sequences.
Ampuero, Jean-Paul +2 more
core +1 more source
Recognition of earthquake-prone nodes, a case study for North Vietnam (M ⩾ 5.0)
Morphostructural nodes in North Vietnam are delineated with the morphostructural zoning (MZ) method, and classified into seismogenic and non-seismogenic nodes.
Nguyen Huu Tuyen, Ngo Thi Lu
doaj +1 more source
Seismogenic zone structure of the southern Middle America Trench, Costa Rica [PDF]
The shallow seismogenic portion of subduction zones generates damaging large and great earthquakes. This study provides structural constraints on the seismogenic zone of the Middle America Trench offshore central Costa Rica and insights into the physical and mechanical characteristics controlling seismogenesis. We have located ∼300 events that occurred
DeShon, H. R. +7 more
openaire +3 more sources
Ground deformation and source geometry of the 30 October 2016 Mw 6.5 Norcia earthquake (Central Italy) investigated through seismological data, DInSAR measurements, and numerical modelling [PDF]
We investigate the Mw 6.5 Norcia (Central Italy) earthquake by exploiting seismological data, DInSAR measurements, and a numerical modelling approach. In particular, we first retrieve the vertical component (uplift and subsidence) of the displacements ...
Bignami, Christian +11 more
core +2 more sources
An integrated geodetic and InSAR technique for the monitoring and detection of active faulting in southwestern Sicily [PDF]
We present the results of the analysis of GNSS (Global Navigation Satellite System) and InSAR (Interferometric synthetic-aperture radar) data collected in the frame of a project financed by the “Struttura Terremoti” of INGV (Istituto Nazionale di ...
Barreca Giovanni +7 more
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