Results 11 to 20 of about 97,504 (218)

2022年1月8日青海门源MS6.9地震深部构造背景浅析

Dizhen xuebao, 2022
2022年1月8日青海境内的托莱山—冷龙岭断裂附近发生了门源MS6.9地震。结合地壳厚度、速度结构及各向异性等资料探讨了门源地震的深部构造特征，揭示了门源地震的发震位置与地壳结构变化的密切关联。结果显示：门源MS6.9地震发生在地壳厚度和vP/vS值都出现快速空间变化的区域；大约在10—20 km深度范围内，震源位于P波速度从浅到深由高速变低速的垂向过渡区，同时也是S波速度和泊松比分布呈现明显横向变化的过渡区域，震源下方存在明显的低速区；冷龙岭断裂两侧相速度的方位各向异性变化比较明显。1月12日的MS5.
Qiong Wang, Zhuo Xiao, Yue Wu, Shuyu Li, Yuan Gao   +4 more
doaj   +1 more source

A case-based reasoning method of recognizing liquefaction pits induced by 2021 MW 7.3 Madoi earthquake

Earthquake Research Advances, 2023
Earthquake-triggered liquefaction deformation could lead to severe infrastructure damage and associated casualties and property damage. At present, there are few studies on the rapid extraction of liquefaction pits based on high-resolution satellite ...
Peng Liang, Yueren Xu, Wenqiao Li, Yanbo Zhang, Qinjian Tian   +4 more
doaj   +1 more source

Contemporary crustal tectonic movement in the southern Sichuan-Yunnan block based on dense GPS observation data

Earth and Planetary Physics, 2019
We analyzed 360 permanent and campaign GPS data from 1999 to 2017 in the southern Sichuan-Yunan block, and obtained crustal horizontal deformation in this region. Then, we derived the strain rate using a multi-scale spherical wavelet method.
HongLin Jin, Yuan Gao, XiaoNing Su, GuangYu Fu   +3 more
doaj   +1 more source

Stress-Related Pre-Seismic Water Radon Concentration Variations in the Panjin Observation Well, China (1994–2020)

Frontiers in Earth Science, 2020
Continuous observation data from a period of 26 years show that water radon concentrations in the Panjin observation well document pre-seismic anomalies prior to earthquakes of 4.8 ≤ M ≤ 7 within a radius of 300 km.
Zhihua Zhou, Lei Tian, Jing Zhao, Haiyan Wang, Jianguang Liu   +4 more
doaj   +1 more source

Contribution of deep-earth fluids to the geothermal system: A case study in the Arxan volcanic region, northeastern China

Frontiers in Earth Science, 2023
Investigations of the hot spring water and gas in the volcanic region are involved in assessing geothermal resources and understanding groundwater circulation, volcano, and earthquake activities.
Yueju Cui, Fengxia Sun, Lei Liu, Chao Xie, Jing Li, Zhi Chen, Ying Li, Jianguo Du   +7 more
doaj   +1 more source

A review of the seismotectonics of the Makran Subduction Zone as a baseline for Tsunami Hazard Assessments

Geoscience Letters, 2019
The Makran Accretionary Wedge (900 km across) is a consequence of northward subduction of the oceanic part of the Arabian Plate beneath the Lut and Afghan blocks in the northwestern Indian Ocean.
Mohammad Mokhtari, Ahmad Ala Amjadi, Leila Mahshadnia, Mandana Rafizadeh   +3 more
doaj   +1 more source

Reverse Detection of Short-Term Earthquake Precursors [PDF]

, 2003
We introduce a new approach to short-term earthquake prediction based on the concept of selforganization of seismically active fault networks. That approach is named "Reverse Detection of Precursors" (RDP), since it considers precursors in reverse order ...
A. Gabrielov, Bird, Blanter, Bowman, Buffe, Caputo, D. Turcotte, Gabrielov, Gabrielov, Jaume, Keilis-Borok, Keilis-Borok, Keilis-Borok, Keilis-Borok, Keilis-Borok, Keilis-Borok, Keilis-Borok, Keilis-Borok, King, Knopoff, Kossobokov, Newman, Novikova, P. Shebalin, Press, Romanowicz, Rotwain, Rundquist, Shebalin, V. Keilis-Borok, Zaliapin, Zaliapin, Zaliapin, Zöller   +33 more
core   +1 more source

Theory of Earthquake Recurrence Times [PDF]

, 2006
The statistics of recurrence times in broad areas have been reported to obey universal scaling laws, both for single homogeneous regions (Corral, 2003) and when averaged over multiple regions (Bak et al.,2002).
Aczél, Alexander Saichev, Bak, Christensen, Console, Console, Console, Console, Console, Corral, Corral, Corral, Corral, Corral, Corral, Daley, Davy, Didier Sornette, Gerstenberger, Gnedenko, Hawkes, Helmstetter, Helmstetter, Helmstetter, Helmstetter, Helmstetter, Helmstetter, Kagan, Kagan, Kagan, Knopoff, Kuczma, Lee, Lindman, Livina, Metzler, Molchan, Molchan, Ogata, Ogata, Ogata, Ouillon, Piryatinska, Reasenberg, Reasenberg, Saichev, Saichev, Saichev, Saichev, Saichev, Schwartz, Sieh, Sornette, Sornette, Sornette, Sornette, Steacy, Uchaikin, Utsu, Wyss, Zhuang, Zhuang, Zhuang   +62 more
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Research progress on layered seismic anisotropy - A review

Earthquake Research Advances, 2021
Seismic anisotropy is an effective feature to study the inner structure of the Earth. In complex tectonic area, the assumption of single-layer anisotropy is sometimes not well consistent with the observed data; thus, the assumption of multi-layered (i.e.
Shengyi Shen, Yuan Gao
doaj   +1 more source

Implications for prediction and hazard assessment from the 2004 Parkfield earthquake [PDF]

, 2005
Obtaining high-quality measurements close to a large earthquake is not easy: one has to be in the right place at the right time with the right instruments. Such a convergence happened, for the first time, when the 28 September 2004 Parkfield, California,
Aagaard, B., Bakun, W. H., Dost, B., Ellsworth, W. L., Hardebeck, J. L., Harris, R. A., Ji, C., Johnston, M. J. S., Langbein, J., Lienkaemper, J. J., Michael, A. J., Murray, J. R., Nadeau, R. M., Reasenberg, P. A., Reichle, M. S., Reoloffs, E. A., Shakal, A., Simpson, R. W., Waldhauser, F.   +18 more
core   +2 more sources