scholarly journals Rupture history of the 1997 Umbria-Marche (Central Italy) main shocks from the inversion of GPS, DInSAR and near field strong motion data

2009 ◽  
Vol 47 (4) ◽  
Author(s):  
B. Hernandez ◽  
M. Cocco ◽  
F. Cotton ◽  
S. Stramondo ◽  
O. Scotti ◽  
...  
Keyword(s):  
Near Field ◽  
Central Italy ◽  
Strong Motion ◽  
Strong Motion Data ◽  
Motion Data ◽  
Main Shocks ◽  
History Of

Classification of Main Shocks and Aftershocks in the NGA-West2 Database

2014 ◽  
Vol 30 (3) ◽  
pp. 1257-1267 ◽  
Author(s):  
Kathryn E. Wooddell ◽  
Norman A. Abrahamson
Keyword(s):  
Time Window ◽  
Strong Motion ◽  
Data Sets ◽  
Horizontal Distance ◽  
Strong Motion Data ◽  
Motion Data ◽  
Rupture Plane ◽  
Main Shocks ◽  
Short Period ◽  
Surface Projection

Previous studies have found a systematic difference between short-period ground motions from aftershocks and main shocks, but have not used a consistent methodology for classifying earthquakes in strong motion data sets. A method for unambiguously classifying earthquakes in strong motion data sets is developed. The classification is based on the Gardner and Knopoff time window, but with a distance window based on a new distance metric, CRJB, defined as the shortest horizontal distance between the centroid of the surface projection of the potential aftershock rupture plane and the surface projection of the main shock rupture plane. Class 2 earthquakes are earthquakes that have a CRJB distance less than a selected limit and within a time window appropriate for aftershocks. All other earthquakes are classified as Class 1. For maximum CRJB of 0 km and 40 km, 11% and 36% of the earthquakes in the NGA-West2 database are Class 2 events, respectively.

Loreto Intermediate Depth Earthquake of 26 May 2019 (Northeast Peru): Source Parameters by Inversion of Local to Regional Waveforms and Strong-Motion Observations

2021 ◽  
Author(s):  
Hernando Tavera ◽  
Bertrand Delouis ◽  
Arturo Mercado ◽  
David Portugal
Keyword(s):  
Near Field ◽  
Source Parameters ◽  
Waveform Inversion ◽  
Strong Motion ◽  
Seismic Source ◽  
Slab Geometry ◽  
Nazca Plate ◽  
Strong Motion Data ◽  
Ground Shaking ◽  
Motion Data

Abstract The Loreto earthquake of 26 May 2019 occurred below the extreme northeast part of Peru at a depth of 140 km within the subducting Nazca plate at a distance of 700 km from the trench Peru–Chile. The orientation of the seismic source was obtained from waveform inversion in the near field using velocity and strong-motion data. The rupture occurred in normal faulting corresponding to a tensional process with T axis oriented in east–west direction similar to the direction of convergence between the Nazca and South America plates. The analysis of the strong-motion data shows that the levels of ground shaking are very heterogeneous with values greater than 50 Gal up to distances of 300 km; the maximum recorded acceleration of 122 Gal at a distance of 100 km from the epicenter. The Loreto earthquake is classified as a large extensional event in the descending Nazca slab in the transition from flat-slab geometry to greater dip.

Rupture History of the 2008Mw 7.9 Wenchuan, China, Earthquake: Evaluation of Separate and Joint Inversions of Geodetic, Teleseismic, and Strong‐Motion Data

2013 ◽  
Vol 103 (1) ◽  
pp. 353-370 ◽  
Author(s):  
Stephen Hartzell ◽  
Carlos Mendoza ◽  
Leonardo Ramirez‐Guzman ◽  
Yuehua Zeng ◽  
Walter Mooney
Keyword(s):  
Strong Motion ◽  
Strong Motion Data ◽  
Motion Data ◽  
History Of ◽  
China Earthquake

scholarly journals Source process and slip model of 2005 Dahuiyeh-Zarand earthquake (Iran) using inversion of near-field strong motion data

2012 ◽  
Vol 189 (1) ◽  
pp. 669-680 ◽  
Author(s):  
R. Rouhollahi ◽  
M. R. Ghayamghamian ◽  
F. Yaminifard ◽  
P. Suhadolc ◽  
M. Tatar
Keyword(s):  
Near Field ◽  
Strong Motion ◽  
Source Process ◽  
Slip Model ◽  
Strong Motion Data ◽  
Motion Data

Rupture history of September 30, 1999 intraplate earthquake of Oaxaca, Mexico (MW=7.5) from inversion of strong-motion data

2001 ◽  
Vol 28 (2) ◽  
pp. 363-366 ◽  
Author(s):  
B. Hernandez ◽  
N. M. Shapiro ◽  
S. K. Singh ◽  
J. F. Pacheco ◽  
F. Cotton ◽  
...  
Keyword(s):  
Strong Motion ◽  
Intraplate Earthquake ◽  
Strong Motion Data ◽  
Motion Data ◽  
History Of
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