RT Journal Article
T1 Tectonic and seismic implications of an intersegment ruptureThe damaging May 11th 2011 Mw 5.2 Lorca, Spain, earthquake
A1 Martínez Díaz, José Jesús
A1 Bejar Pizarro, Marta
A1 Álvarez Gómez, José Antonio
A1 Mancilla Pérez, Flor de Lis
A1 Stich, Daniel
A1 Herrera García, Gerardo
A1 Morales Soto, José
AB On May 11th 2011, a Mw 5.2 earthquake stroke the city of Lorca in the SE Spain. This event caused 9 fatalities,300 injuries and serious damage on the city and the surrounding areas. The Lorca earthquake occurred in thevicinity of a region bounding two well-known segments of a large active fault, the Alhama de Murcia fault(AMF). The Lorca earthquake offers a unique opportunity to study how strain is accommodated in an intersegmentregion of a large strike slip fault. We map recent tectonic structures in the epicentral region and weuse radar interferometry to analyze the coseismic deformation. Combining these data with seismological observationsof Lorca seismic sequence we first model the source of the earthquake. Then we analyze the influenceof our preferred model in the adjacent segments by Coulomb failure stress modeling. The proposedearthquake source model suggests that this event ruptured an area of ~4×3 km within the complex structurethat limits the Goñar–Lorca and Lorca–Totana segments of the AMF. The induced static stress change on theadjacent segments of the fault represents a seismic cycle advance equivalent to 200 to 1000 years of tectonicloading.
PB Elsevier B.V.
SN 0040-1951
YR 2012
FD 2012
LK https://hdl.handle.net/20.500.14352/44243
UL https://hdl.handle.net/20.500.14352/44243
LA eng
DS Docta Complutense
RD 11 abr 2025