An Analysis of the Seismic Source Characteristics of Explosions in Low-Coupling Dry Porous Media

2011 ◽  
Author(s):  
J. R. Murphy ◽  
T. J. Bennett ◽  
B. W. Barker
Keyword(s):  
Porous Media ◽  
Seismic Source ◽  
Source Characteristics

Strong Motion Records of the 2002 Molise, Italy, Earthquake Sequence and Stochastic Simulation of the Main Shock

2004 ◽  
Vol 20 (1_suppl) ◽  
pp. 65-79 ◽  
Author(s):  
Antonella Gorini ◽  
Sandro Marcucci ◽  
Paolo Marsan ◽  
Giuliano Milana
Keyword(s):  
Strong Motion ◽  
Seismic Source ◽  
Stochastic Approach ◽  
Epicentral Area ◽  
Motion Data ◽  
Source Characteristics ◽  
Source Directivity ◽  
Field Radiation ◽  
Recorded Data ◽  
Strong Motion Network

The far field radiation inferred from accelerometric data recorded by the Italian Strong Motion Network (RAN) during the October 31, 2002, Molise, Italy, earthquake indicates a strong anisotropy in PGA distribution that presents its maximum values in the eastern part of the epicentral area. This study explores an interpretation of source directivity using a stochastic approach to produce synthetic seismograms accounting for source dimensions and rupture evolution. An E-W strike-slip fault, with a dip close to 90° and a fault plane size of (8×6) km2, reproduces satisfactorily both peak accelerations and spectral shapes of the recorded data when the rupture enucleates from the western edge at a depth of about 20 km and propagates eastward. This approach allows us to put constraints on seismic source characteristics and can be used to simulate ground motion for the most damaged areas where strong motion data are not available.

scholarly journals EFFECTS OF SEISMIC-SOURCE CHARACTERISTICS UNCERTAINTIES ON SEISMIC INTENSITY AND STRUCTURAL RESPONSE

2016 ◽  
Vol 81 (721) ◽  
pp. 425-435
Author(s):  
Sayaka IGARASHI ◽  
Shigehiro SAKAMOTO ◽  
Akemi NISHIDA ◽  
Ken MURAMATSU ◽  
Tsuyoshi TAKADA
Keyword(s):  
Structural Response ◽  
Seismic Source ◽  
Seismic Intensity ◽  
Source Characteristics

Seismic Source Characteristics of Nuclear and Chemical Explosions in Granite from Hydrodynamic Simulations

2012 ◽  
Vol 171 (3-5) ◽  
pp. 507-521 ◽  
Author(s):  
Heming Xu ◽  
Arthur J. Rodgers ◽  
Ilya N. Lomov ◽  
Oleg Y. Vorobiev
Keyword(s):  
Seismic Source ◽  
Hydrodynamic Simulations ◽  
Source Characteristics ◽  
Chemical Explosions

Seismic Source Characteristics of Nuclear Explosions in Water-filled Cavities

2001 ◽  
Vol 158 (11) ◽  
pp. 2105-2121 ◽  
Author(s):  
J. R. Murphy ◽  
D. D. Sultanov ◽  
N. Rimer ◽  
B. W. Barker
Keyword(s):  
Seismic Source ◽  
Nuclear Explosions ◽  
Source Characteristics

Seismic source characteristics of the 2016 Pedernales-Ecuador earthquake (Mw 7.8)

2021 ◽  
Vol 312 ◽  
pp. 106670
Author(s):  
César Jiménez ◽  
Miguel Saavedra J. ◽  
Nick Moreno
Keyword(s):  
Seismic Source ◽  
Source Characteristics

scholarly journals Developments in studies of earthquake risk

1975 ◽  
Vol 8 (1) ◽  
pp. 1-11
Author(s):  
R. D. Adams
Keyword(s):  
Tectonic Setting ◽  
Source Parameters ◽  
Seismic Source ◽  
Earthquake Risk ◽  
Small Scale ◽  
Full Account ◽  
Source Characteristics ◽  
The Pacific ◽  
Recent Developments ◽  
Pacific Margin

Following recent developments in geophysics, analyses of earthquake risk should take full account of the tectonic setting of the regions concerned, of variations in soil properties, and of source characteristics of the earthquakes. New theories of global
tectonics differentiate among various types of geophysically active areas. In particular. New Zealand's environment is closer to that
of Japan and other west Pacific countries than to that of California, which is tectonically one of the least typical parts of the Pacific margin. The limitation of Californian earthquakes to depths in the upper crust, and their often established close lineations along surface traces of geological faults have resulted in the development of a refined process of quantitative risk analysis there, the techniques
of which may not be appropriate in other areas. Small scale
variations in soil characteristics cause variations in earthquake response which are often more significant in the evaluation of earthquake risk than regional differences in seismicity. Recent developments in seismic source theory show that a single parameter
such as magnitude is not adequate to define source characteristics closely. With the additional determination of seismic moment, source parameters such as fault radius, fault displacement and stress drop
can all be estimated. These source parameters define the expected shape of the source spectra, and thus the frequency characteristics of earthquakes that may be expected in different parts of an active area such as New Zealand.

Seismic Source Characteristics of Soviet Peaceful Nuclear Explosions

2001 ◽  
Vol 158 (11) ◽  
pp. 2077-2101 ◽  
Author(s):  
J. R. Murphy ◽  
I. O. Kitov ◽  
B. W. Barker ◽  
D. D. Sultanov
Keyword(s):  
Seismic Source ◽  
Nuclear Explosions ◽  
Source Characteristics
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