[1] We investigate seismicity near faults in the Southern California Earthquake Center Community Fault Model. We search for anomalously large events that might be signs of a characteristic earthquake distribution. We find that seismicity near major fault zones in Southern California is well modeled by a Gutenberg-Richter distribution, with no evidence of characteristic earthquakes within the re...

A probabilistic seismic hazard assessment in terms of Arias intensity is presented for the city of Tehran. Tehran is the capital and the most populated city of Iran. From economical, political and social points of view, Tehran is the most significant city of Iran. Many destructive earthquakes happened in Iran in the last centuries. Historical references indicate that the old city of Rey and the...

This paper study the recent seismicity in Earthquake hazard zones in India. A large historical earthquake event catalog to cover the period of 1900-2018, the parameters date, time, latitude, longitude, depth and magnitude has been used to calculating frequency-magnitude distribution (b-value) of seismic hazard zones in India. To convert different magnitude scales into a single moment magnitude ...

Re-evaluated intensity distributions for the 1897 Mw 8.0 Shillong and the 1905 Mw 7.8 Kangra earthquakes, combined with geodetic constraints on rupture geometries, allow us to compare observed distributions of intensity with theoretically predicted shaking. The difference between predicted and observed shaking is interpreted in terms of the site response of the Ganges and Brahmaputra basins. Th...

[1] Abstract: Some alternative representations for seismicity are introduced based on the use of the hue, saturation, and brightness model of color representation. Depth information is conveniently coded by hue and magnitude by saturation. The approach can be used for individual events or to provide useful summary properties of seismicity. The cumulative effects of many events can be combined b...

The 2016 Kumamoto earthquakes in Kyushu, Japan, started with a magnitude (M) 6.5 quake on April 14 on the Hinagu fault zone (FZ), followed by active seismicity including an M6.4 quake. Eventually, an M7.3 quake occurred on April 16 on the Futagawa FZ. We investigated if any sign indicative of the M7.3 quake could be found in the space–time changes in seismicity after the M6.5 quake. As a qualit...

the makran subduction zone in southeastern iran and southern pakistan is where the oceanic crust of the arabian plate (oman sea) is subducting beneath eurasia. compared to other subduction zones in the world, the makran subduction zone has some unusual features, including different seismicity patterns in its eastern and western parts. also, the quaternary volcanoes in the eastern part of makran...

This paper describes a numerical investigation of seismicity induced during injection into a single, isolated fracture. A model was developed and used that couples (1) fluid flow and (2) rate and state friction. Rate and state friction theory describes how friction on a fault depends on both sliding velocity and past sliding history. Rate and state friction is used widely in earthquake modeling...

masjed soleyman dam site is located in the zagros mountain of western iran, which is one of the most seismically active zones of the alpe-himalayan belt. after impounding of dam, the seismicity of area increased considerably, showing the impact of reservoir (177 m height, 261 million m3) in changing the rate of seismicity in the area. we have analyzed the seismicity of area in terms of the spat...

The characterization of fluid-transport properties of rocks is one of the most important, yet difficult, challenges of reservoir geophysics, but is essential for optimal development of hydrocarbon and geothermal reservoirs. Production of shale oil, shale gas, heavy oil and geothermal energy, as well as carbon-dioxide sequestration, are relatively recent developments where borehole fluid injecti...