Results 41 to 50 of about 6,760 (227)

The Uglovoye Podnyatiye Earthquake on December 20, 2018 (Mw = 7.3) in the Junction Zone between Kamchatka and Aleutian Oceanic Trenches

open access: yesВестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле, 2020
The paper presents the first results of integrated research of the strong seismic event (Uglovoye Podnyatiye earthquake (UPE) with a magnitude of Mw=7.3) that occurred on December 20, 2018 in the junction zone between the Kuril-Kamchatka and Aleutian ...
Чебров Д.В.   +9 more
doaj   +1 more source

Magnetospheric Field‐Aligned Current Generation by Foreshock Transients: Contribution by Flow Vortices and Pressure Gradients

open access: yesJournal of Geophysical Research - Space Physics, 2022
Foreshock transients can result in significant dynamic pressure perturbations downstream, causing the magnetopause to move locally outward and inward. These near‐magnetopause phenomena in turn generate magnetospheric field‐aligned currents (FACs).
T. Liu   +6 more
semanticscholar   +1 more source

关于2021年5月滇西漾濞MS6.4地震序列特征及成因的初步研究

open access: yesDizhen xuebao, 2021
2021年5月21日21时48分在滇西苍山西麓漾濞地区发生MS6.4 (MW6.1)强震,相关地震活动表现为一个典型的前震−主震−余震序列。本研究分别就该地震序列的构造背景、M1.0以上地震的双差定位、主要地震的矩张量反演和破裂传播方向、应力场反演及断层滑动趋势以及潮汐作用等方面进行了初步分析。矩张量反演结果表明,矩心深度为6.0 km。根据断层破裂传播方向分析结果及精定位余震分布判定,主震震源断层产状为走向137°,倾角75°,滑动角−167°,破裂沿南东向单侧扩展,右旋走滑含正断层分量 ...
Xinglin Lei   +3 more
doaj   +1 more source

Upper crust anisotropy of the 2020 Jiashi MS 6.4 earthquake

open access: yesFrontiers in Earth Science, 2023
The 2020 Jiashi MS 6.4 earthquake occurred north of the 1997–1998 Jiashi earthquake swarm. Because of its complex tectonic environment and frequent strong earthquake occurrence, scholars have paid extensive attention to this area.
Jin Li   +4 more
doaj   +1 more source

Foreshock Activity Promoted by Locally Elevated Loading Rate on a 4‐m‐Long Laboratory Fault

open access: yesJournal of Geophysical Research - Solid Earth, 2022
We report laboratory experimental results to reveal the factors that control the occurrence and magnitude of foreshocks. We conducted rock friction experiments using an apparatus that can shear 4‐m‐long rock specimens. We observed many stick‐slip events,
F. Yamashita, E. Fukuyama, S. Xu
semanticscholar   +1 more source

Observational Evidence of Magnetic Reconnection in the Terrestrial Foreshock Region [PDF]

open access: yesAstrophysical Journal, 2021
Electron heating/acceleration in the foreshock, by which electrons may be energized beyond thermal energies prior to encountering the bow shock, is very important for the bow shock dynamics.
K. Jiang   +12 more
semanticscholar   +1 more source

Properties and formation mechanisms of foreshock transients [PDF]

open access: yes, 2022
Dissertation (Ph.D.) University of Alaska Fairbanks, 2022Interactions between bow shock-reflected (foreshock) ions with solar wind particles can lead to the formation of foreshock transients, frequently observed upstream of the bow shock.
Vu, Andrew
core  

Characteristics of the foreshock occurrence for Mj3.0 to 7.2 shallow onshore earthquakes in Japan

open access: yesEarth, Planets and Space, 2022
We use the Japan Meteorological Agency (JMA) earthquake catalogue from January, 2001 to February, 2021 to investigate the spatiotemporal foreshock occurrence for shallow (within 30 km depth) onshore earthquakes (M j 3.0 to 7.2).
H. Peng, James J. Mori
semanticscholar   +1 more source

Rare Occurrences of Non‐cascading Foreshock Activity in Southern California

open access: yesGeophysical Research Letters, 2021
Earthquakes preceding large events are commonly referred to as foreshocks. They are often considered as precursory phenomena reflecting the nucleation process of the main rupture.
L. Moutote   +3 more
semanticscholar   +1 more source

Recognizing the waveform of a foreshock [PDF]

open access: yes, 2020
Abstract The 2011 Mw9.1 Tohoku, Japan, earthquake is the paradigmatic example of an earthquake anticipated by a significant foreshock activity, with a Mw7.3 earthquake occurred two days before, within about 10 km 1. Recent results 2 show that statistically relevant changes can be found in the magnitude distribution after the Mw7.3 foreshock but
Eugenio Lippiello   +2 more
openaire   +1 more source

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