One of the most widespread spring-block earthquake models, the Olami-Feder-Christensen model, is investigated without making the assumption that the duration of individual earthquakes is negligible. While the GutenbergRichter law for the size distribution of earthquakes is preserved qualitatively for earthquakes of finite duration, the bvalue decreases with increasing earthquake duration. The e...

Within eleven minutes on 11 August 2012, twin earthquakes measured 6.3 and 6.4 on the Richter scale jolted Ahar and Varzaqan in northwestern Iran, claiming 300 lives and leaving thousands of injured in rural villages.12 The magnitude of the earthquakes was so immense that more than a hundred villages were 70-90% destroyed, while 20 being totally flattened. The primary estimations were suggestiv...

Preliminary results from the 2001 India census indicate that the population is now 1,027,015,247 [1], making India the second most populous country in the world [2]. The United Nations projects that by the year 2050, India will be the most populated country in the world with over 1.5 billion people [2]. India has also experienced some of the most devastating earthquakes ever recorded. Examples ...

Near-source observations of five M 3.8-5.2 earthquakes near Ridgecrest, California are consistent with the presence of a seismic nucleation phase. These earthquakes start abruptly, but then slow or stop before rapidly growing again toward their maximum rate of moment release. Deconvolution of instrument and path effects by empirical Green's functions demonstrates that the initial complexity at ...

Subduction zones form dominant tectonic features on the Earth and are the site of large underthrusting earthquakes and explosive arc volcanism. They are also the only locations with deep earthquakes in the Earth’s interior. Major questions remain regarding the dynamics of subduction zones, including aspects such as the role of water in the formation of arc volcanism and deep earthquakes, the in...

Earthquake An earthquake is the shaking or trembling of the earth, which may be natural or man-made (e.g., due to atomic explosion) in origin. An earthquake is a sudden, strong movement or slipping of the earth’s crust that result in a sudden release of energy. Earthquakes occur at certain locations where the tectonic plates which form the earth’s crust, coincide. Populations that live near the...

in the natural disasters such as earthquake, based on severity of trauma, time under the rubble and quality/quantity of hydratation we will confront with a spectrum of traumatic rhabdomyolysis. in present study we evaluate victims of bam earthquake to show different stage of muscle trauma, from minor trauma with almost normal level of muscle enzyme to those with moderate trauma leading to crush...

[1] Empirical evidence of the preearthquake ionospheric anomalies (PEIAs) is reported by statistically investigating the relationship between variations of the plasma frequency at the ionospheric F2 peak foF2 and 184 earthquakes with magnitude M 5.0 during 1994– 1999 in the Taiwan area. The PEIA, defined as the abnormal decrease more than about 25% in the ionospheric foF2 during the afternoon p...

Tsunami is one of the most severe natural disasters faced by regions around the rim of oceans, usually generated by submarine earthquakes (usually with magnitude larger than 7.0), volcano eruptions and large landslides. Submarine earthquakes are the most common tsunami sources. As we know, the prediction of an earthquake is still not satisfactory with today's technologies, in fact, for most ear...

Since the 1960s, numerous cases of induced seismicity have been associated with reservoir impoundment, mining and the injection of fluids into the subsurface [National Resources Council, 2012]. In recent years, fluid injection activities have intensified as a result of growing shale gas production, enhanced oil recovery, disposal of produced waters in dedicated injection wells, enhanced geother...