Results 31 to 40 of about 25,380 (253)

Linear elastic fracture mechanics predicts the propagation distance of frictional slip [PDF]

open access: yes, 2014
When a frictional interface is subject to a localized shear load, it is often (experimentally) observed that local slip events initiate at the stress concentration and propagate over parts of the interface by arresting naturally before reaching the edge.
Ampuero, Jean-Paul   +3 more
core   +2 more sources

Tectonophysical model of the tectonic earthquake focus [PDF]

open access: yesГеосистемы переходных зон
Based on the results of physical modeling of the processes of fault zone formation, general regularities of their structural and dynamic development were revealed.
@ Bornyakov, Sergey A.   +9 more
doaj   +1 more source

ULF geomagnetic anomaly associated with the Sumatra-Pagai Islands earthquake swarm during 2020

open access: yesContributions to Geophysics and Geodesy, 2022
Observations of earthquake precursors via geomagnetic anomalies from ultra-low frequency (ULF) could provide an expectation for short-term earthquake prediction.
Marzuki MARZUKI   +9 more
doaj   +1 more source

Prediction of Large Events on a Dynamical Model of a Fault

open access: yes, 1993
We present results for long term and intermediate term prediction algorithms applied to a simple mechanical model of a fault. We use long term prediction methods based, for example, on the distribution of repeat times between large events to establish a ...
Aki   +46 more
core   +1 more source

Statistical analysis of daily seismic event rate as a precursor to volcanic eruptions [PDF]

open access: yes, 2003
We analyse time series of daily seismic event rate for the Kilauea, Hawaii, volcano between 1959 and 2000. Individual eruptions are not always preceded by an increase in event rate, and many increases in event rate do not lead to eruption.
Chastin, Sebastien F. M., Main, Ian G.
core   +2 more sources

The pecularities of shear crack pre-rupture evolution and distribution of seismicity before strong earthquakes [PDF]

open access: yesNatural Hazards and Earth System Sciences, 2001
Several methods are presently suggested for investigating pre-earthquake evolution of the regions of high tectonic activity based on analysis of the seismicity spatial distribution.
D. Kiyashchenko, V. Troyan
doaj  

Ionospheric Anomalies Related to the (M = 7.3), August 27, 2012, Puerto Earthquake, (M = 6.8), August 30, 2012 Jan Mayen Island Earthquake, and (M = 7.6), August 31, 2012, Philippines Earthquake: Two-Dimensional Principal Component Analysis

open access: yesThe Scientific World Journal, 2013
Two-dimensional principal component analysis (2DPCA) and principal component analysis (PCA) are used to examine the ionospheric total electron content (TEC) data during the time period from 00:00 on August 21 to 12: 45 on August 31 (UT), which are 10 ...
Jyh-Woei Lin
doaj   +1 more source

Is It Possible to Predict Strong Earthquakes?

open access: yes, 2014
The possibility of earthquake prediction is one of the key open questions in modern geophysics. We propose an approach based on the analysis of common short-term candidate precursors (2 weeks to 3 months prior to strong earthquake) with the subsequent ...
Polyakov, Yuriy S.   +3 more
core   +1 more source

Seismic hazard assessment of Kashmir and Kangra valley region, Western Himalaya, India

open access: yesGeomatics, Natural Hazards & Risk, 2015
A complete earthquake catalogue of the Western Himalaya (latitudes 30°N–36°N and longitudes 72°E–78°E) for the period of 1501–2010 has been compiled with earthquake magnitude computed in moment magnitude (Mw) scale.
Basab Mukhopadhyay, Sujit Dasgupta
doaj   +1 more source

Temporal variation of gravity field prior to the Ludian Ms6.5 and Kangding Ms6.3 earthquakes

open access: yesGeodesy and Geodynamics, 2015
Using mobile gravity data from the central area of Sichuan and Yunnan Provinces, the relationship between gravity variation and earthquakes was studied based on the Ludian Ms6.5 earthquake that occurred on August 3rd, 2014, and the Kangding Ms6.3 ...
Hongtao Hao   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy