A Source Study of the Mw 7.0 Acapulco, Mexico, Earthquake of 8 September 2021

Autor: Arturo Iglesias, Shri K. Singh, Oscar Castro-Artola, Xyoli Pérez-Campos, Raul D. Corona-Fernandez, Miguel A. Santoyo, Víctor H. Espíndola, Danny Arroyo, Sara I. Franco
Rok vydání: 2022
Předmět:
Zdroj: Seismological Research Letters. 93:3205-3218
ISSN: 1938-2057
0895-0695
DOI: 10.1785/0220220124
Popis: The Acapulco earthquake of 2021 broke a segment of the southeast Guerrero seismic gap along the Mexican subduction thrust. The rupture initiated offshore Acapulco (16.770° N, 99.942° W) and propagated down-dip toward northeast. This source directivity is confirmed from both (1) an analysis of local and regional recordings as a function of azimuth and (2) kinematic inversion of near-source, band-pass filtered (0.025–0.5 Hz) displacement seismograms and Global Positioning System static coseismic displacement vectors. The inversion reveals little slip near the hypocenter (
Databáze: OpenAIRE