Results 101 to 110 of about 6,760 (227)

The East Aegean Sea strong earthquake sequence of October–November 2005: lessons learned for earthquake prediction from foreshocks [PDF]

open access: yesNatural Hazards and Earth System Sciences, 2006
The seismic sequence of October–November 2005 in the Samos area, East Aegean Sea, was studied with the aim to show how it is possible to establish criteria for (a) the rapid recognition of both the ongoing foreshock activity and the mainshock, and (
G. A. Papadopoulos   +8 more
doaj  

Observations and Simulations of a Double‐Core Hot Flow Anomaly

open access: yesGeophysical Research Letters
Hot Flow anomalies (HFAs), one of the most well‐analyzed transient phenomena in the Earth's foreshock, are known as kinetic structures driven by tangential discontinuities (TDs).
Xi Lu   +4 more
doaj   +1 more source

维西—乔后断裂带及其周边地区震群和前震序列活动特征

open access: yesDizhen xuebao
使用云南地震台网2009—2021年的地震目录和波形数据,采用双差定位方法、基于P波初动极性和S/P振幅比的HASH方法和最大似然法等,获取了维西—乔后断裂带及附近地区ML≥4.0震群和前震序列精确的震源位置、震源机制解、视应力和b值等地震活动参数,对比分析了维西—乔后断裂带及其周边震群及前震序列的活动特征。结果显示:除前震序列频次呈现出反大森定律外,前震序列与普通震群在空间分布、震源机制一致性、视应力和b值等单一参数方面并无明显的差异;但前震序列同时具备震中优势分布方向与区域主要构造展布方向一致 ...
Guangming Wang   +4 more
doaj   +1 more source

Simultaneous observations of MHD hot flow anomaly and kinetic foreshock bubble and their impacts

open access: yesFrontiers in Physics
Hot flow anomalies (HFAs) and foreshock bubbles (FBs) are two types of transient phenomena characterized by flow deflected and hot cores bounded by one or two compressional boundaries in the foreshock.
Xi Lu   +5 more
doaj   +1 more source

Physical mechanisms of earthquake nucleation and foreshocks: Cascade triggering, aseismic slip, or fluid flows?

open access: yesEarthquake Research Advances
Earthquakes are caused by the rapid slip along seismogenic faults. Whether large or small, there is inevitably a certain nucleation process involved before the dynamic rupture.
Zhigang Peng, Xinglin Lei
doaj   +1 more source

An examination of prospective foreshock probabilities in New Zealand

open access: yes, 2000
This thesis investigates aspects of prospective foreshock probabilities in New Zealand. An earthquake qualifies as a foreshock if it is followed by an event of at least the same magnitude within the next 5 days and an epicentral radius of 30 km.
Merrifield, Alistair
core   +1 more source

The ULF wave foreshock boundary: Cluster observations [PDF]

open access: yes, 2015
The interaction of backstreaming ions with the incoming solar wind in the upstream region of the bow shock gives rise to a number of plasma instabilities from which ultralow frequency (ULF) waves can grow.
Meziane, Karim   +9 more
core   +1 more source

Four Point Measurements of the Foreshock

open access: yes, 2008
Hybrid code numerical simulations accurately predict the properties of the Earth's foreshock, a region populated by solar wind particles heated and reflected by their interaction with the bow shock.
Angelopoulos, V.   +2 more
core  

Ultra-Low Frequency Waves of Foreshock Origin Upstream and Inside of the Magnetospheres of Earth, Mercury, and Saturn Related to Solar Wind–Magnetosphere Coupling

open access: yesUniverse
This review examines ultra-low frequency (ULF) waves across different planetary environments, focusing on Earth, Mercury, and Saturn. Data from spacecraft missions (CHAMP, Swarm, and Oersted for Earth; MESSENGER for Mercury; and Cassini for Saturn ...
Zsofia Bebesi   +4 more
doaj   +1 more source

Structure and Properties of the Foreshock at Venus

open access: yes, 2017
The interaction of the solar wind with Venus is dominated by the planet's ionosphere that acts as an obstacle to the flow resulting in an induced magnetosphere and bow shock much smaller than their terrestrial counterparts.
Collinson, G., Omidi, N., Sibeck, D.
core  

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