Results 111 to 120 of about 1,236 (203)

On the relationship between foreshocks and mainshock

Foreshocks are clustered seismic events occurring before large earthquakes. They are usually identified a posteriori on the base of significant increases of the seismic rate not compatible with the previous background and static stress transfer ...
Carlo Doglioni, Davide Zaccagnino, Luciano Telesca   +2 more
core  

The Distribution of Earthquakes: Recognizing Foreshocks

In this activity, students use online animations of foreshocks in an attempt to decide whether or not they think the earthquakes that occurred on the last day (day 90) of the animations are foreshocks of a large earthquake (mainshock) that will occur on ...

core  

Partial Ruptures, Cascading Multi‐Fault Ruptures, and Aftershocks in 2D Random Fault Network

Geophysical Research Letters
The Gutenberg‐Richter law for the distribution of earthquake magnitude and the Omori law for the decay of aftershocks are two universal laws in seismicity. Although numerical models have been developed to reproduce these laws, they sometimes produce many
So Ozawa
doaj   +1 more source

Do not call them foreshocks

One of the most intriguing issues in earthquake science concerns the discrimination between foreshocks and swarms. We investigate relocated seismic catalogues in California and Italy and provide a theoretical explanation of our results.
Carlo Doglioni, Davide Zaccagnino, Luciano Telesca   +2 more
core  

IDENTIFIKASI RANGKAIAN GEMPA BUMI PENDAHULUAN (FORESHOCKS) DENGAN PENDEKATAN KORELASI SILANG SINYAL SEISMIK TEMPLATE (STUDI KASUS RANGKAIAN GEMPA BUMI KARO 2017)

, 2017
Penelitian ini berhasil membuktikan bahwa pendekatan korelasi silang sinyal seismik dapat digunakan untuk mendeteksi kejadian seismik menggunakan waveform dari jaringan BMKG (Badan Meteorologi Klimatologi dan Geofisika).
Renhard Sipayung, Suko Prayitno Adi, Dzikrullah Akbar, Dimas Salomo Januarianto Sianipar   +3 more
core   +1 more source

Foreshocks and aftershocks of the great 1857 California earthquake [PDF]

, 1998
The San Andreas fault is the longest fault in California and one of the longest strike-slip faults anywhere in the world, yet we know little about many as-pects of its behavior before, during, and after large earthquakes.
Aron J. Meltzner, Meltzner, Aron J., Wald, David J., David J. Wald   +3 more
core  

Step-over of strike-slip faults and overpressure fluid favor occurrence of foreshocks: Insights from the 1975 Haicheng fore-main-aftershock sequence, China

Earthquake Research Advances
This study analyzed and summarized in detail the spatial and temporal distributions of earthquakes, tidal responses, focal mechanisms, and stress field characteristics for the M 7.3 Haicheng earthquake sequence in February 1975.
Xinglin Lei, Zhiwei Wang, Shengli Ma, Changrong He   +3 more
doaj   +1 more source

Real-time discrimination of earthquake foreshocks and aftershocks

, 2019
Immediately after a large earthquake, the main question asked by the public and decision-makers is whether it was the mainshock or a foreshock to an even stronger event yet to come.
Gulia, Laura, Wiemer, Stefan; id_orcid, Wiemer, Stefan   +2 more
core   +1 more source

Seismicity acceleration and clustering before the 2015 Mw 7.9 Gorkha earthquake, Nepal

Seismica
In the last decade, several observations of peculiar seismic and geodetic phases preceding large earthquakes have been documented. Despite being a posteriori, these observations provide a better understanding of the processes involved in the nucleation ...
Blandine Gardonio, Laurent Bollinger, Marine Laporte, Jérôme Vergne, Hélène Lyon-Caen, Lok Bijaya Adhikari   +5 more
doaj   +1 more source

A matched-filter technique with an objective threshold. [PDF]

Sci Rep, 2022
Hirano S, Kawakata H, Doi I.
europepmc   +1 more source