Results 41 to 50 of about 2,343 (216)

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, Ángel Poncela González, Mauro Cacace, Magdalena Scheck‐Wenderoth, Gaspar Monsalve   +4 more
openaire   +2 more sources

新疆博罗可努—阿齐克库都克断裂精河段古地震与最新活动时代研究

Dizhen xuebao, 2022
博罗可努—阿齐克库都克断裂是西天山北西向右旋走滑断裂系中最北端的一条活动断裂，其在中国境内延伸最长。本文在艾比湖西侧及精河县东南侧最新地表形变上开挖两条探槽，进行该断裂古地震的初步研究。根据活动性质差异和断裂截切关系将该断裂分为艾比湖段和精河以东段，在对沉积物光释光年代和地震关系分析的基础上，确定了此两段断裂的最新活动时代均为全新世，初步确定其古地震期次，最新地震事件距今3.7—4.86 ka之间；根据冲沟位错和洪积扇年代测定结果，确定精河以东段的活动速率大于4 mm/a；根据探槽错动至地表 ...
Panxin Yang, Weihua Hu, Chaozhong Hu, Xinzhe Sun, Shuaitang Huang, Chunshan Guo, Zhihua Chen, Jinwei Ren   +7 more
doaj   +1 more source

Research of Seismogenic Structures of the 2016 and 2022 Menyuan Earthquakes, in the Northeastern Tibetan Plateau

Remote Sensing, 2023
On 8 January 2022, a Moment Magnitude (Mw) 6.7 earthquake occurred in Menyuan, China. The epicenter was located in the western segment of the Lenglongling fault of the Qilian-Haiyuan fault zone. In this area, the Mw 5.9 Menyuan earthquake on 26 August 1986 and the Mw 5.9 Menyuan earthquake on 21 January 2016 successively occurred.
Junyi Wang, Lin Ding, Jiankun He, Fulong Cai, Chao Wang 0143, Zongkun Zhang   +5 more
openaire   +2 more sources

The Seismogenic Thickness of Venus [PDF]

Growing evidence that volcanism is currently ongoing on Venus suggests that the sister planet of the Earth may also be seismically active. Given the success of seismic measurements on Mars and the Moon to reveal the interior structure of these bodies ...
Garcia, Raphaël F., Gülcher, Anna J. P., Maia, Julia, Gülcher, Anna, Näsholm, Sven Peter, De Toffoli, Barbara, Plesa, Ana-Catalina, Herrick, Robert, Horleston, Anna C., Panning, Mark P., Herrick, Robert R., Smolinski, Krystyna, Panning, Mark, T. Smolinski, Krystyna, Horleson, Anna C., Klaasen, Sara; id_orcid, Maia, Julia S., Smolinski, Krystyna T., Horleston, A., Garcia, R., Horleston, Anna C, Gülcher, Anna J.P., van Zelst, Iris, Ghail, Richard, Klaasen, S., Plesa, Ana Catalina, Smolinski, K., De Toffoli, B., Plesa, Ana‐Catalina, Klaasen, Sara   +29 more
core   +1 more source

2013年三台MS4.7地震震源机制及发震构造研究

Dizhen xuebao, 2021
2013年2月19日四川省绵阳市三台县发生MS4.7地震，震中位于四川盆地中部基底断裂绵阳—三台—大足断裂与蒲江—三台—巴中断裂的交会区域。基于地震目录、震相报告和波形等资料，对地震序列进行重定位，采用近远震联合波形反演求解主震震源机制，结合野外地质调查对该地震的发震构造进行分析。余震序列重定位的空间展布方向为NW-SE向，与节面Ⅰ走向吻合，认为此次地震发震断裂走向为NW−SE，倾向为NE，且破裂面近于直立，发震断层在近NS向的近水平挤压应力作用下作右旋走滑错动。实地调查中未见地表破裂及地表断层行迹 ...
Suihai Liu, Jinxiong Lü, Xueqin Zhao, Gang Zhang, Mingru Wen   +4 more
doaj   +1 more source

Seismogenic Structures in Subduction Zones

Surveys in Geophysics
Abstract Recent studies of high-resolution seismic tomography of source zones of large crustal earthquakes, megathrust earthquakes, and intraslab earthquakes are reviewed, which shed new light on seismogenic structures and fluids in subduction zones.
Dapeng Zhao, Genti Toyokuni
openaire   +1 more source

Surface Consistent Seismic Hazard Assessment in the Shillong Plateau, Northeast India: A Probabilistic Approach Using Multiple Source Models and a Logic Tree Framework

Earthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT We perform probabilistic seismic hazard analysis (PSHA) in the Shillong Plateau by clubbing the up‐to‐date earthquake data and seismotectonic properties of the study area. Twenty‐one areal seismic sources are delineated based on the updated earthquake catalog, tectonic, and fault plane solutions.
Mohd Shahabuddin, William Kumar Mohanty, Eleftheria Papadimitriou   +2 more
wiley   +1 more source

2017年8月9日精河MS6.6地震余震序列精定位及发震构造分析

Dizhen xuebao, 2019
为确定2017年8月9日精河MS6.6地震的发震构造，本文使用双差定位方法对发震时刻至2017年10月震源区所发生的余震进行了精定位，同时利用CAP波形反演方法，得到了主震的震源机制解，同时使用GPAT方法反演得到了部分余震的震源机制解，并基于两者对本次地震的发震构造予以分析。结果显示：精定位后主震位于（44.27°N，82.85°E），震源深度为17 km；主震最佳双力偶解对应的节面Ⅰ的走向为260°、倾角为51°、滑动角为84°，节面Ⅱ的走向为89.5°、倾角为39.4°、滑动角为97.4 ...
Liang Zhai, Xiaodong Zhang, Weijun Wang
doaj   +1 more source

Fault‐Controlled Permeability: A Key Parameter in Geothermal Electricity Production Assessment

Terra Nova, EarlyView.
ABSTRACT Geothermal energy is central to the global green energy transition, but its development has long focused on regions with positive thermal anomalies. Through a semi‐quantitative global‐scale review and spatial analysis of 361 geothermal sites, we show that 56.2% of global geothermal electricity production occurs in regions with thermal ...
Vincent Roche, Gaétan Milesi
wiley   +1 more source

Tectonic deformation and seismic mechanism of the 2021 Aksai MS 5.5 earthquake

Dizhi lixue xuebao
Objective  On August 26, 2021, an Ms5.5 earthquake occurred in Aksai, Gansu Province. The epicenter is located along the southern piedmont of the Danghe Nan Shan.
ZOU Xiaobo, LI Xingjian, SHAO Yanxiu, YUAN Daoyang, QIU Jiangtao, YIN Xinxin, KOU Junyang   +6 more
doaj   +1 more source