The radiated seismic energy and apparent stress of interplate and intraplate earthquakes at subduction zone environments; implications for seismic hazard estimation

2001 ◽  
Author(s):  
George L. Choy ◽  
John L. Boatwright ◽  
Stephen H. Kirby
Keyword(s):  
Seismic Hazard ◽  
Subduction Zone ◽  
Seismic Energy ◽  
Apparent Stress ◽  
Intraplate Earthquakes ◽  
Radiated Seismic Energy ◽  
Hazard Estimation ◽  
Seismic Hazard Estimation

scholarly journals The April 2009 Abruzzi, Italy, Earthquake: Impact on Site Seismic Hazard Estimation

Eos ◽  
2009 ◽  
Vol 90 (45) ◽  
pp. 410 ◽  
Author(s):  
Antonio Rapolla ◽  
Vincenzo Di Fiore ◽  
Silvio Di Nocera ◽  
Fabio Matano ◽  
Valeria Paoletti
Keyword(s):  
Seismic Hazard ◽  
Hazard Estimation ◽  
Seismic Hazard Estimation ◽  
Earthquake Impact

Stress drop estimates for some aftershocks of the Ometepec, Guerrero, Mexico, earthquake of June 7, 1982

1987 ◽  
Vol 24 (8) ◽  
pp. 1727-1733 ◽  
Author(s):  
Cecilio J. Rebollar ◽  
Rosa M. Alvarez
Keyword(s):  
Stress Drop ◽  
Wave Attenuation ◽  
Seismic Energy ◽  
Coda Wave ◽  
Apparent Stress ◽  
Radiated Seismic Energy ◽  
Seismic Coda ◽  
Seismic Quality Factor ◽  
Single Station ◽  
Stress Drops

Brune's stress drop, apparent stress, and arms stress drop are estimated at a single station for 25 aftershocks of the Ometepec earthquakes (Ms = 6.9 and Ms = 7.0). The arms stress drops and apparent stresses are systematically smaller than Brune's stress drops. Stress drops from the root mean square of acceleration and apparent stress range from 0.01 to 10.2 bars (1 bar = 100 kPa) except for two values (21.4 and 33.0 bars). On the other hand, Brune's stress drops range from 0.6 to 239 bars. Seismic moments ranging from 0.5 × 1019 to 289 × 1019 dyn∙cm (1 dyn∙cm = 10 μN∙cm) were estimated for events with coda magnitudes between 0.6 and 2.2. Values of radiated seismic energy calculated by integration of the displacement spectra range from 2.5 × 1012 to 2.3 × 1016 dyn∙cm. The fmax values lie between 16 and 30 Hz. Seismic coda wave attenuation measured on narrow band-pass-filtered seismograms show a linear dependence of the seismic quality factor of the form [Formula: see text] in the range of frequencies from 3 to 24 Hz.

Sign in / Sign up

Export Citation Format

Share Document