Results 161 to 170 of about 7,837 (204)

Multistage Nucleation of the 2021 Yangbi MS 6.4 Earthquake, Yunnan, China and Its Foreshocks

Journal of Geophysical Research: Solid Earth, 2022
On 21 May 2021, an MS 6.4 earthquake occurred in Yangbi, Yunnan province, China. A significant foreshock sequence occurred 3 days before the mainshock, which provides an opportunity to study earthquake nucleation.
Min Liu, Hongyi Li, Lu Li, Miao Zhang, Weitao Wang   +4 more
semanticscholar   +1 more source

Aseismic Slip and Cascade Triggering Process of Foreshocks Leading to the 2021 Mw 6.1 Yangbi Earthquake

Seismological Research Letters, 2022
Understanding the nature of foreshock evolution is important for earthquake nucleation and hazard evaluation. Aseismic slip and cascade triggering processes are considered to be two end-member precursors in earthquake nucleation processes.
Xiaoge Liu, Wenbin Xu, Zilong He, L. Fang, Zhidan Chen   +4 more
semanticscholar   +1 more source

A High-Resolution Seismic Catalog for the Initial 2019 Ridgecrest Earthquake Sequence: Foreshocks, Aftershocks, and Faulting Complexity

Seismological Research Letters, 2020
I use template matching and precise relative relocation techniques to develop a high-resolution earthquake catalog for the initial portion of the 2019 Ridgecrest earthquake sequence, from 4 to 16 July, encompassing the foreshock sequence and the first ...
D. Shelly
semanticscholar   +1 more source

Regional Characteristics of Observable Foreshocks

Seismological Research Letters, 2022
Measures of foreshock occurrence are systematically examined using earthquake catalogs for eight regions (Italy, southern California, northern California, Costa Rica, Onshore Japan, Alaska, Turkey, and Greece) after imposing a magnitude ≥3.0 ...
N. Wetzler, E. Brodsky, E. Chaves, T. Goebel, T. Lay   +4 more
semanticscholar   +1 more source

Characteristics of Foreshocks Revealed by an Earthquake Forecasting Method Based on Precursory Swarm Activity

Journal of Geophysical Research: Solid Earth, 2021
We have developed an empirical earthquake forecast method, Maeda's method, based on the statistical features of precursory seismic swarm activity, that is foreshocks, which sometimes appear before a mainshock, and issuing an alert of a mainshock ...
F. Hirose, K. Tamaribuchi, K. Maeda
semanticscholar   +1 more source

Foreshocks:

2022
This chapter revisits ‘the Cornish commotion’ of 1548 — a short-lived but, from the Crown's point of view, deeply troubling émeute which flared up in West Cornwall in April that year, during the course of which a royal commissioner who was overseeing the removal of images from local churches was killed.
openaire   +2 more sources

Foreshock cavities and internal foreshock boundaries

Planetary and Space Science, 2011
Abstract We present two case studies of cluster encounters with foreshock cavities. For one event, we are able, for the first time, to accurately relate the observation of a foreshock cavity to the measured position of the bow shock. This allows us to compute the shock angle, a vital parameter in models of foreshock cavity formation, with greater ...
Laurence Billingham, Steven J. Schwartz, Mark Wilber   +2 more
openaire   +1 more source

Foreshocks of the 2018 ML 4.0 Shimian Earthquake in the Anninghe Fault and Its Implications for Earthquake Nucleation

, 2021
Foreshock activity sometimes precedes large earthquakes, but how foreshocks relate to mainshock nucleation is still unclear with limited case studies existing.
T. Feng, Jianping Wu, L. Fang, Xian-Qun Guo, Yan Cai, Weilai Wang   +5 more
semanticscholar   +1 more source

Statistical model of earthquake foreshocks

Physical Review A, 1992
We propose a statistical model of rupture as a mechanism for the occasionally observed marked increase of seismic activity prior to a great earthquake. The physical ingredients of the model are those of geometrical inhomogeneity and viscoelastic creep.
, Sornette, , Vanneste, , Knopoff
openaire   +2 more sources

Migrating Foreshocks Driven by a Slow Slip Event Before the 2021 MW 6.1 Yangbi, China Earthquake

Journal of Geophysical Research: Solid Earth
Foreshocks are known to occur before certain large earthquakes, but the physical mechanism is still in debate. Recent field and laboratory studies have supported either cascade‐triggering, pre‐slip or a combination of both models.
Kaiying Wang, Z. Peng, S. Liang, Jiahong Luo, Keliang Zhang, Changrong He   +5 more
semanticscholar   +1 more source