this paper presents the seismicity and seismotectonic characteristics of esfahan and adjoining regions, an area bounded between 49.5-54o e and 31-34.1o n. according to mirzaei et al. (1998) this region is placed between two major seismotectonic provinces: zagros and central-east iran. the boundary between these two provinces is known to be the main zagros reverse fault. geological maps with sca...

A new homogenous earthquake catalogue covering Bulgaria and the surrounding Balkan area has been created with intention of performing a consistent seismic hazard assessment across the region. In keeping with modern requirements of cataloguing seismicity, this catalogue has been made homogenous as far as possible with regards to magnitude, which has been provided on any of four different reporte...

Abstract The paper considers a class of problems the dynamics spatial systems underground pipelines under action three-component seismic waves propagating in soil based on instrumental records real earthquakes. A comparison was made impacts harmonic and an pipeline during Gazli earthquake. graphical method for determining dominant period to be used calculations impact given.

Earthquakes have and continue to, occur worldwide, though some places are affected more than others by earthquake-induced ground shaking the same earthquake can cause damage in one area nearby locations due to site-specific geological site conditions, also known as local effects. Depending on chronology of earthquakes, various disciplines seismology include instrumental historical seismology, a...

G reat earthquakes of magnitude 8.5 or larger occur infrequently. For a nearly 40-y period after the February of 1965 M 8.7 Rat Islands, Alaska earthquake, the world did not experience a single great earthquake; however, in the 7 y since late December of 2004, there have been a barrage of five great earthquakes. These earthquakes include the 2004 M 9.1 Sumatra, Indonesia earthquake; the 2005 M ...

The analysis of the seismicity catalog (1996 to 2019) covering region from Jura mountains Corsica provides a first-order image distribution earthquakes, highlighting large structures such as Briançonnais and Piedmontais seismic arcs, eastward deepening focal depths through Western Alps, several active faults (e.g. Belledonne, Middle Durance, Ligure). Over this period magnitudes are moderate mec...

A method is presented for determining the local magnitude, NIL, from records from seismoscopes and similar instruments. The technique extrapolates the maximum response of the standard Wood-Anderson seismograph, which determines ML, from the maximum response of the seismoscope. The standard deviation of the steady-state response of an oscillator subjected to white noise excitation is used to der...

A method is presented for determining the local magnitude, NIL, from records from seismoscopes and similar instruments. The technique extrapolates the maximum response of the standard Wood-Anderson seismograph, which determines ML, from the maximum response of the seismoscope. The standard deviation of the steady-state response of an oscillator subjected to white noise excitation is used to der...

Instrumental catalogues of earthquakes in the subduction zone Lesser Antilles are produced by local observatories and International Seismological Centre. But none these merge all arrival times first regional phases available; addition, they have a magnitude completeness relatively high for entire area. As part Data Centre project, we unified catalogue known from 1972 to 2012, with optimal const...

The tectonic structure of Türkiye is under the influence Arabian, Eurasian, African, and Anatolian plates. Lake Van region, located in eastern Türkiye, has been exposed to many devastating earthquakes historical instrumental periods. In this paper, using regional earthquakes, stress variation region was investigated Coulomb change b-value distribution. 83 that occurred between 2000 2020 are use...