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Título:
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Refining seismic parameters in low seismicity areas by 3D trenching: TheAlhama de Murcia fault, SE Iberia
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Autores:
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Ferrater, Marta ;
Ortuño, María ;
Masana, Eulàlia ;
Pallàs, Raimon ;
Perea Manea, Hector ;
Baize, Stephane ;
García Meléndez, Eduardo ;
Martínez Díaz, José J. ;
Echeverria, Anna ;
Rockwell, Thomas K. ;
Sharp, Warren D. ;
Medialdea, Alicia ;
Rhodes, Edward J.
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Tipo de documento:
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texto impreso
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Editorial:
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Elsevier, 2016-06
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Dimensiones:
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application/pdf
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Nota general:
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info:eu-repo/semantics/restrictedAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Geología: Geodinámica
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Materia = Ciencias: Geología: Sismología
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Tipo = Artículo
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Resumen:
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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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En línea:
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https://eprints.ucm.es/58875/1/Refining%20seismic%20parameters%20in%20low%20seismicity.pdf
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