Extreme wave deposits on the Pacific Coast of Mexico: tsunamis or storms? - A multi-proxy approach

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dc.contributor.authorRamirez-Herrera, MTen_AU
dc.contributor.authorLagos, Men_AU
dc.contributor.authorHutchinson, Ien_AU
dc.contributor.authorChagué-Goff, Cen_AU
dc.contributor.authorKostoglodov, Ven_AU
dc.contributor.authorGoff, JRen_AU
dc.contributor.authorRuiz-Fernandez, Aen_AU
dc.contributor.authorMachain-Castillo, MLen_AU
dc.contributor.authorCaballero, Men_AU
dc.contributor.authorGoguitchaichrili, Aen_AU
dc.contributor.authorAguilar, Ben_AU
dc.contributor.authorUrquijo, Pen_AU
dc.date.accessioned2020-06-11T23:45:22Zen_AU
dc.date.available2020-06-11T23:45:22Zen_AU
dc.date.issued2011-12-05en_AU
dc.date.statistics2020-05-15en_AU
dc.description.abstractHistorical and instrumental data show that the Pacific coast of Mexico has been exposed to destructive tsunamis over at least the past 500 years. This coast is also affected by hurricanes generated in the eastern Pacific. The great 1985 Mexico earthquake and its aftershock generated tsunamis that affected the Ixtapa-Zihuatanejo and Michoacán coast. The purpose of our study was two-fold, a) to determine whether we could distinguish storm from tsunami deposits, and b) whether tsunami deposits from historical events are preserved in the tropical environments of the Ixtapa-Zihuatanejo coast. Two anomalous sand units in the Ixtapa estuary are interpreted as the result of high-energy marine inundation events that occurred in the last century. Several lines of evidence using a multi-proxy approach (historical studies, interviews with local witnesses, geomorphological and geological surveys, coring and trenching, and laboratory analyses including grain size, micropaleontology, geochemistry, magnetic susceptibility and radiometric dating) indicate the occurrence of two tsunamis that we link to local events: the 1985 Mexico and possibly the 1979 Petatlan earthquakes. We thereby provide the first onshore geological evidence of historical tsunamis on the Pacific coast of Mexico. © American Geophysical Unionen_AU
dc.identifier.citationRamirez Herrera, M., Lagos, M., Hutchinson, I., Chagué-Goff, C., Kostoglodov, V., Goff, J. R., Ruiz-Fernandez, A., Machain, M., Caballero, M., Goguitchaichrili, A., Aguilar, B., & Urquijo, P. (2011). Extreme wave deposits on the Pacific Coast of Mexico: tsunamis or storms? - A multi-proxy approach. Paper presented at the American Geophysical Union Fall Meeting 2011, 5 December 2011 to 9 December 2011, San Francisco, California.en_AU
dc.identifier.conferenceenddate9 December 2011en_AU
dc.identifier.conferencenameAmerican Geophysical Union Fall Meeting 2011en_AU
dc.identifier.conferenceplaceSan Francisco, Californiaen_AU
dc.identifier.conferencestartdate5 December 2011en_AU
dc.identifier.govdoc9534en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/9597en_AU
dc.language.isoenen_AU
dc.publisherAmerican Geophysical Unionen_AU
dc.relation.ispartofseriesNH33A-1558;en_AU
dc.subjectSeismologyen_AU
dc.subjectSubduction zonesen_AU
dc.subjectNorth Americaen_AU
dc.subjectMexicoen_AU
dc.subjectTsunamisen_AU
dc.subjectShoresen_AU
dc.subjectHurricanesen_AU
dc.subjectEarthquakesen_AU
dc.subjectGeologic depositsen_AU
dc.subjectGeologic surveysen_AU
dc.titleExtreme wave deposits on the Pacific Coast of Mexico: tsunamis or storms? - A multi-proxy approachen_AU
dc.typeConference Abstracten_AU
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