12,000-year-long record of 10 to 13 paleoearthquakes on the Yammouneh fault, Levant fault system, Lebanon | INSTITUT DE PHYSIQUE DU GLOBE DE PARIS

Twitter

Aller au compte twitter

  12,000-year-long record of 10 to 13 paleoearthquakes on the Yammouneh fault, Levant fault system, Lebanon

Type de publication:

Journal Article

Source:

Bulletin of the Seismological Society of America, Volume 97, Ticket 3, p.749-771 (2007)

ISBN:

0037-1106

URL:

http://www.bssaonline.com/

Mots-clés:

CALIBRATION; HISTORICAL SEISMICITY; AQABA EARTHQUAKE

Résumé:

We present results of the first paleoseismic study of the Yammo (u) over cap neh fault, the main on-land segment of the Levant fault system within the Lebanese restraining bend. A trench was excavated in the Yammo (u) over cap mch paleolake, where the fault cuts through finely laminated sequences of marls and clays. First-order variations throughout this outstanding stratigraphic record appear to reflect climate change at centennial and millennial scales. The lake beds are offset and deformed in a 2-m-wide zone coinciding with the mapped fault trace. Ten to thirteen events are identified, extending back more than similar to 12 kyr. Reliable age bounds on seven of these events constrain the mean seismic return time to 1127 +/- 135 yr between similar to 12 ka and similar to 6.4 ka, implying that this fault slips in infrequent but large (M similar to 7.5) earthquakes. Our results also provide conclusive evidence that the latest event at this site was the great A.D. 1202 historical earthquake, and suggest that the Yammo (u) over cap neh fault might have been the source of a less well-known event circa A.D. 350. These findings, combined with previous paleoseismic data from the Zebadani valley, imply that the parallel faults bounding the Beqaa release strain in events with comparable recurrence intervals but significantly different magnitudes. Our results contribute to document the clustering of large events on the Levant fault into centennial episodes, such as that during the eleventh through twelfth centuries, separated by millennial periods of quiescence, and raise the possibility of a M > 7 event occurring on the Yammo (u) over cap neh fault in the coming century. Such a scenario should be taken into account in regional seismic-hazard assessments and planned for accordingly.

Notes:

Bull. Seismol. Soc. Amer.ISI Document Delivery No.: 175ZMTimes Cited: 0Cited Reference Count: 75Cited References:*SERV MET LIB, 1971, ATL CLIM LIBABOUKARAKI N, 1987, THESIS U L PASTEUR SALOUF M, 1998, HIST BAALBEKALTARAZI E, 2000, NAT HAZARDS, V22, P17AMBRASEYS N, 1982, HIST PERSIAN EARTHQUAMBRASEYS N, 1992, TERRA NOVA, V4, P254AMBRASEYS N, 1994, SEISMICITY EGYPT ARAAMBRASEYS NN, 1988, HIST SEISMOGRAMS EAR, P181AMBRASEYS NN, 1989, J GEOPHYS RES-SOLID, V94, P4007AMBRASEYS NN, 1998, GEOPHYS J INT, V133, P390ARMIJO R, 2005, GEOCHEM GEOPHY GEOSY, V6, ARTN Q06009AVNI R, 2002, J SEISMOL, V6, P469BARKA AA, 1988, TECTONICS, V7, P663BARMATTHEWS M, 2003, GEOCHIM COSMOCHIM AC, V67, P3181BENMENAHEM A, 1981, TECTONOPHYSICS, V80, P199BENMENAHEM A, 1991, J GEOPHYS RES-SOL EA, V96, P20195BESANCON J, 1968, HANNON, V3, P3BIASI GP, 2002, B SEISMOL SOC AM, V92, P2761BOOKMAN R, 2004, GEOL SOC AM BULL, V116, P555, DOI 10.1130/B25286.1BOSWORTH W, 2005, J AFR EARTH SCI, V43, P334, DOI10.1016/j.jafrearsci.2005.07.020CARTON H, 2005, THESIS I PHYS GLOBECHU DZ, 1998, GEOPHYS J INT, V135, P313COURTILLOT V, 1987, TECTONOPHYSICS, V141, P181CULLEN HM, 2000, GEOLOGY, V28, P379DAERON M, 2004, EARTH PLANET SC LETT, V227, P105, DOI10.1016/j.epsl.2004.07.014DAERON M, 2005, GEOLOGY, V33, P529, DOI 10.1130/G21352.1DAERON M, 2005, THESIS U PHYS GLOBEDARAWCHEH R, 2000, J EARTHQUAKE ENG, V4, P403DENG Q, 1986, AM GEOPHYS MONOGRAPH, V3, P169ELIAS A, 2006, THESIS I PHYS GLOBEELIAS A, 2007, IN PRESS GEOLOGYELLENBLUM R, 1998, GEOLOGY, V26, P303EMRE O, 2003, SPECIAL PUBLICATIONFREUND R, 1970, PHILOS T R SOC LON A, V267, P107GARFUNKEL Z, 1981, TECTONOPHYSICS, V80, P1GOMEZ F, 2003, GEOPHYS J INT, V153, P658GUIDOBONI E, 1994, CATALOGUE ANCIENT EAGUIDOBONI E, 2004, J GEOPHYS RES-SOL EA, V109, ARTN B07304GUIDOBONI E, 2005, CATALOGUE EARTHQUAKEHARAJLI M, 2002, J SEISMOL, V6, P257HAZAN N, 2005, QUATERNARY RES, V63, P60, DOI 10.1016/j.yqres.2004.09.004HOFSTETTER A, 2003, TECTONOPHYSICS, V369, P21, DOI10.1016/S0040-1951(03)00129-XHUBERTFERRARI A, 2000, NATURE, V404, P269JIDEJIAN N, 1998, BAALBEK HELIOPOLISJING L, 2006, J GEOPHYS RES, V111, UNSP B02306KLINGER Y, 1999, B SEISMOL SOC AM, V89, P1025KLINGER Y, 2000, GEOPHYS J INT, V142, P755KLINGER Y, 2000, GEOPHYS J INT, V142, P769KLINGER Y, 2003, SEDIMENT GEOL, V162, P119, DOI10.1016/j.sedgeo.2003.07.001KLINGER Y, 2005, B SEISMOL SOC AM, V95, P1970MAHMOUD S, 2005, EARTH PLANET SC LETT, V238, P217MANIGHETTI I, 1998, J GEOPHYS RES-SOL EA, V103, P4947MARCO S, 2003, GEOLOGY, V31, P665MARCO S, 2005, EARTH PLANET SC LETT, V234, P189, DOI10.1016/j.epsl.2005.01.017MCCLUSKY S, 2003, GEOPHYS J INT, V155, P126MCKENZIE DP, 1970, NATURE, V226, P243MEGHRAOUI M, 2003, EARTH PLANET SC LETT, V210, P35, DOI10.1016/S0012-821X(03)00144-4MORHANGE C, 2006, MAR GEOL, V230, P99, DOI 10.1016/j.margeo.2006.04.003NIEMI TM, 2001, J SEISMOL, V5, P449PELZER G, 1989, SCIENCE, V246, P1285PLASSARD J, 1956, ANN SEISMOLOGIQUES OPLASSARD J, 1968, MELANGES U SAINT JOS, V44, P9POIRIER JP, 1980, B SEISMOL SOC AM, V70, P2185PRASAD S, 2004, GEOLOGY, V32, P581, DOI 10.1130/G20553.1QUENNELL AM, 1959, P 20 INT GEOL C MEX, P385RAMSEY CB, 1995, RADIOCARBON, V37, P425RAMSEY CB, 2001, RADIOCARBON, V43, P355RECHES Z, 1981, TECTONOPHYSICS, V80, P235REIMER PJ, 2004, RADIOCARBON, V46, P1029SIEH KE, 1984, J GEOPHYS RES, V89, P7641STEIN RS, 1997, GEOPHYS J INT, V128, P594VANDERWOERD J, 2002, GEOPHYS J INT, V148, P356WDOWINSKI S, 2004, J GEOPHYS RES-SOL EA, V109, ARTN B05403WELDON R, 2004, GSA TODAY, V14, P4WELLS DL, 1994, B SEISMOL SOC AM, V84, P974