Results 91 to 100 of about 2,082 (203)

2022年6月10日四川马尔康MS6.0震群序列时空演化特征

Dizhen xuebao
2022年6月10日马尔康MS6.0震群序列发生在松岗断裂与龙日坝断裂交会处，呈震群型活动特征。本文以四川地震台网目录为基础，对马尔康地震序列的参数特征开展研究，取该序列三次MS5.0地震之后各一个小时，作为 Ⅰ ， Ⅱ ， Ⅲ 共计三个阶段，进行对比分析。由于较大地震后短时间内目录遗漏的余震较多，为增大研究所需的地震样本量，首先采用模板匹配法进行微小地震识别，以补充完备目录，并利用识别的地震目录及台网目录分别计算马尔康MS6.0地震序列的b值、p值等参数。计算结果显示，相比于第 Ⅱ 和 Ⅲ 阶段，第 ...
Yue Gong, Feng Long, Min Zhao, Peng Yang, Yuxi Wang, Mingjian Liang, Huizhen Qiao, Yuhang Wang   +7 more
doaj   +1 more source

Preliminary Analysis of the Aftershock Sequence of the February 6, 2023, Turkey Earthquake [PDF]

مجلة جامعة النجاح للأبحاث العلوم الطبيعية
The February 6, 2023, Turkey earthquake with a moment magnitude (Mw=7.8) will be recognized as one of the most powerful earthquakes to strike a large metropolitan area in recent memory.
Radwan El-Kelani, Anas Atatri
doaj   +1 more source

Foreshock density holes and their connection with other foreshock transients [PDF]

Thesis (Ph.D.) University of Alaska Fairbanks, 2024Foreshock is the region upstream of the bow shock that is magnetically connected to it. In this region the particles reflected from the bow shock interact with the incoming solar wind plasma, making this
Lu, Xi
core  

Foreshock Transients: Their Characteristics and Effects on Particle Acceleration [PDF]

, 2018
Earth’s foreshock is filled with particles that have been reflected at the bow shock and are streaming away from it. Interaction of these particles with solar wind particles and discontinuities within this region can cause foreshock transients to form ...
Liu, Zixu
core  

First Observations of the Disruption of the Earth's Foreshock Wave Field During Magnetic Clouds [PDF]

, 2019
International audienceThe foreshock, extending upstream of Earth's bow shock, is a region of intense electromagnetic wave activity and nonlinear phenomena, which can have global effects on geospace.
Turc, L., Pfau‐Kempf, Y., Archer, M.,, M. Grandin, C. P. Escoubet, Archer, MO, Grandin, M., U. Ganse, Roberts, O., W, Escoubet, C., P, L. Turc, Roberts, O.,, Dandouras, I., Escoubet, CP, Palmroth, M., Roberts, O. W., T. Brito, Grandin, M, Pfau-Kempf, Y, Turc, L, I. Dandouras, M. Palmroth, Battarbee, M, Ganse, U., Roberts, OW, Archer, M. O., Y. Pfau‐Kempf, Archer, M., O, M. Battarbee, Ganse, U, Escoubet, C.,, Pfau-Kempf, Y., Battarbee, M., M. O. Archer, Brito, T., Brito, T, Palmroth, M, Dandouras, I, Escoubet, C. P., O. W. Roberts   +39 more
core   +1 more source

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

Natural 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, I. Latoussakis, E. Daskalaki, G. Diakogianni, A. Fokaefs, M. Kolligri, K. Liadopoulou, K. Orfanogiannaki, A. Pirentis   +8 more
doaj  

Observations and Simulations of a Double‐Core Hot Flow Anomaly

Geophysical 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, Antonius Otto, Hui Zhang, Terry Liu, Xingran Chen   +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

Dizhen 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, Xin Ouyang, Zifeng Liu, Guanling Peng, Jinzhong Jiang   +4 more
doaj   +1 more source

New Observations of Mercury's Foreshock Made by BepiColombo

International audienceStudies of the region just upstream of Earth's bow shock - known as its foreshock - have revealed the presence of transient particle populations with characteristics unlike either the upstream solar wind or the downstream plasma of ...
Glass, Austin N., Heyner, Daniel, Richter, I., Fischer, David, Schmid, Daniel, Matsuda, Shoya, Aizawa, Sae, Raines, Jim M., Matsuoka, Ayako, Katra, Bruno, Fontaine, Dominique, Magnes, Werner, Krupp, Norbert, Leblanc, Frederic, Krüger, Harald, Hadid, Lina, Fischer, Henning, Baumjohann, Wolfgang, Harada, Yuki, Murakami, Go, Auster, Hans Ulrich, Saito, Yoshifumi, Delcourt, Dominique, Yokota, Shoichiro, Verdeil, Christophe, Fraenz, Markus, Fiethe, Björn   +26 more
core   +4 more sources

Magnetospheric Multiscale (MMS) observations of magnetic reconnection in foreshock transients

, 2020
Magnetic reconnection is a fundamental process of energy conversion in plasmas between electromagnetic fields and particles. Magnetic reconnection has been observed directly in a variety of plasmas in the solar wind and Earth's magnetosphere.
Zhang, Hui, San Lu, Drew L. Turner, Liu, Terry Z., Gingell, Imogen, Terry Z. Liu, Imogen Gingell, Anton Artemyev, James L. Burch, Angelopoulos, Vassilis, Artemyev, Anton, Burch, James L., Vassilis Angelopoulos, Lu, San, Turner, Drew, Hui Zhang   +15 more
core   +1 more source