Results 31 to 40 of about 10,542 (228)
濑溪河流域地貌对泸县MS6.0地震发震构造变形的响应及其指示作用
Dizhen xuebao, 2022 以12.5 m 数字高程模型数据为基础，采用数字地貌分析方法提取了濑溪河流域的高程剖面和面积-高程积分（HI）等地貌参数，分析了2021年9月16日四川盆地东南部泸县MS6.0地震震中附近区域地貌与构造活动的响应关系。结果显示：震中西侧的螺观山和梯子崖背斜在震中的南北两端存在明显的缩短量差异；HI条带状低值区的展布方向与流域内构造的方向一致，HI高值区位于华蓥山两条断裂夹持的谷地，但在震中附近存在WNW向的HI低值带。综合分析认为，泸县地震震中附近应存在一走向为WNW的隐伏构造 ...
Wenying Zhou +7 more
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Deep lithospheric structures along the southern central Chile Margin from wide-angle P-wave modellilng [PDF]
, 2009 Crustal- and upper-mantle structures of the subduction zone in south central Chile, between 42 degrees S and 46 degrees S, are determined from seismic wide-angle reflection and refraction data, using the seismic ray tracing method to calculate minimum ...
A. Krabbenhoeft +73 more
core +1 more source
Frontiers in Earth Science, 2023 Huoshan “seismic window” is located in the northern margin of the Dabie Orogen belt, the contact zone between North China and the Yangtze plate, where the seismic activity is mainly concentrated in this area.
Lingli Li +19 more
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Assessing infrequent large earthquakes using geomorphology and geodesy in the Malawi Rift [PDF]
, 2015 In regions with large, mature fault systems, a characteristic earthquake model may be more appropriate for modelling earthquake occurrence than extrapolating from a short history of small, instrumentally observed earthquakes using the Gutenberg–Richter ...
Aspinall, Willy P +3 more
core +4 more sources
Crustal Seismogenic Thickness and Thermal Structure of NW South America
, 2022 Abstract. The crustal seismogenic thickness (CST) has direct implications on the magnitude and occurrence of crustal earthquakes, and therefore, on the seismic hazard of any region. Amongst other factors, the seismogenesis of rocks is affected by in-situ conditions (temperature and state of stress) and by the rocks’ heterogeneous composition.
Ángela María Gómez‐García +4 more
openaire +2 more sources
Dizhen xuebao, 2020 基于首都圈数字地震台网的宽频带资料，首先采用CAP方法确定了永清MS4.3地震和廊坊MS3.0地震的震源机制解：永清地震节面Ⅰ的走向、倾角和滑动角分别为52°，62°和−140°，节面Ⅱ的走向、倾角和滑动角分别为300°，55°和−35°；廊坊地震节面I的走向、倾角和滑动角分别为48°，57°和−147°，节面Ⅱ的走向、倾角和滑动角分别为299°，63°和−38°。两次地震的震源机制解较为一致，推测它们可能具有相同的发震断层。利用近震转换波获得两次地震的震源深度，分别为19 km和13 km ...
He Li +4 more
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Frontiers in Earth Science, 2023 The 2022 Ms6.0 Maerkang earthquake sequence, Sichuan, China, occurred in an unexpected area with historically rare seismicity in the Bayan Har block. Here we relocated the earthquake sequence, inverted for the focal mechanisms of the larger events, and ...
Long Feng +7 more
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Thermal structure and megathrust seismogenic potential of the Makran subduction zone [PDF]
Geophysical Research Letters, 2013 The Makran subduction zone experienced a tsunamigenic Mw 8.1 earthquake in 1945 and recent, smaller earthquakes also suggest seismicity on the megathrust; however, its historical record is limited and hazard potential enigmatic. We have developed a 2‐D thermal model of the subduction zone.
Smith, Gemma L. +4 more
openaire +3 more sources
Dizhen xuebao, 2019 为研究川滇地区地壳密度的时空演化特征与强震孕育的关系，本文基于2011—2014年川滇地区的重力复测资料，利用阻尼最小二乘反演算法，获得了川滇地区0—50 km深度范围内分辨率为55 km×55 km×10 km （长×宽×高）的三维动态密度变化模型。以所获取的动态密度变化为依据，分析了川滇地区三维密度变化特征与2013年四川芦山MS7.0、2014年云南鲁甸MS6.5和四川康定MS6.3地震的关系，并由此对强震重点构造部位的深部地壳结构特征、孕震背景及区域动力学过程进行了深入分析。结果显示 ...
Honglei Li, Shi Chen
doaj +1 more source
Геофизический журнал, 2013 On the base of results of analysis of structuralkinematic parageneses of ruptures and displacements in the earthquakes foci of the foldedfaulted Zagrosa system the main types of seismogene sis have been substantiated and their stereographic models ...
Yu.M. Volfman
doaj +1 more source