Rupture Directivity Characteristics of the 2003 Big Bear Sequence
نویسندگان
چکیده
منابع مشابه
Rupture Directivity Characteristics of the 2003 Big Bear Sequence
Abstract We have developed a forward modeling technique to retrieve rupture characteristics of small earthquakes (3 < M < 5), including rupture propagation direction, fault dimension, and rupture speed. The technique is based on an empirical Green’s function (EGF) approach, where we use data from collocated smaller events as Green’s functions to study the bigger events. We tend to choose smalle...
متن کاملFault - perpendicular aftershock clusters following the 2003 Mw = 5 . 0 Big Bear , California , earthquake
[1] To explore aftershock-triggering mechanisms for the 2003 Big Bear, California earthquake sequence, we determined differential travel-times and applied the double-difference technique to relocate these events, which formed three clusters. The main cluster coincides with the 3 km long northwest striking sub-vertical mainshock fault. The other two sub-vertical clusters, located at opposite end...
متن کاملWidespread ground motion distribution caused by rupture directivity during the 2015 Gorkha, Nepal earthquake
The ground motion and damage caused by the 2015 Gorkha, Nepal earthquake can be characterized by their widespread distributions to the east. Evidence from strong ground motions, regional acceleration duration, and teleseismic waveforms indicate that rupture directivity contributed significantly to these distributions. This phenomenon has been thought to occur only if a strike-slip or dip-slip r...
متن کاملApproximation of Rupture Directivity in Regional Phases Using Upgoing and Downgoing Wave Fields
Recent broadband modeling of regional events suggests that vertical directivity is particularly important at high frequency. Conventionally, such directivity is obtained by summing a grid of point sources. This relatively time-consuming procedure can be greatly reduced by introducing directivity time histories appropriate for the various crustal phases in terms of upgoing and downgoing paths th...
متن کاملCombining stress transfer and source directivity: the case of the 2012 Emilia seismic sequence
The Emilia seismic sequence (Northern Italy) started on May 2012 and caused 17 casualties, severe damage to dwellings and forced the closure of several factories. The total number of events recorded in one month was about 2100, with local magnitude ranging between 1.0 and 5.9. We investigate potential mechanisms (static and dynamic triggering) that may describe the evolution of the sequence. We...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Bulletin of the Seismological Society of America
سال: 2010
ISSN: 0037-1106
DOI: 10.1785/0120090074