%0 Journal Article
%A Ferrater, Marta
%A Ortuño, María
%A Masana, Eulàlia
%A Pallàs, Raimon
%A Perea Manera, Héctor
%A Baize, Stephane
%A Martínez Díaz, José Jesús
%A García Meléndez, Eduardo
%A Echeverria, Anna
%A Rockwell, Thomas K.
%A Sharp, Warren D.
%A Medialdea, Alicia
%A Rhodes, Edward J.
%T Refining seismic parameters in low seismicity areas by 3D trenching: TheAlhama de Murcia fault, SE Iberia
%D 2016
%@ 0040-1951
%U https://hdl.handle.net/20.500.14352/23697
%X 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
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