RT Journal Article
T1 Refining seismic parameters in low seismicity areas by 3D trenching: TheAlhama de Murcia fault, SE Iberia
A1 Ferrater, Marta
A1 Ortuño, María
A1 Masana, Eulàlia
A1 Pallàs, Raimon
A1 Perea Manera, Héctor
A1 Baize, Stephane
A1 Martínez Díaz, José Jesús
A1 García Meléndez, Eduardo
A1 Echeverria, Anna
A1 Rockwell, Thomas K.
A1 Sharp, Warren D.
A1 Medialdea, Alicia
A1 Rhodes, Edward J.
AB hree-dimensional paleoseismology in strike-slip faults with slip rates less than 1 mm per year involves a greatmethodological challenge. We adapted 3D trenching to track buried channels offset by the Alhama de Murciaseismogenic left-lateral strike-slip fault (SE Iberia). A fault net slip of 0.9 ± 0.1 mm/yr was determined usingstatistical analysis of piercing lines for one buried channel, whose age is constrained between 15.2 ± 1.1 kaand 21.9–22.3 cal BP. This value is larger and more accurate than the previously published slip rates for thisfault. The minimum number offive paleo-earthquakes identified since the deposition of dated layers suggestsa maximum average recurrence interval of approximately 5 ka. The combination of both seismic parametersyields a maximum slip per event between 5.3 and 6.3 m. We show that accurately planned trenching strategiesand data processing may be key to obtaining robust paleoseismic parameters in low seismicity ares
PB Elsevier
SN 0040-1951
YR 2016
FD 2016-06
LK https://hdl.handle.net/20.500.14352/23697
UL https://hdl.handle.net/20.500.14352/23697
LA eng
NO Ministerio de Ciencia e Innovación
DS Docta Complutense
RD 7 abr 2025