The geological trace of the 1932 tsunamis in the tropical Jalisco-Colima

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dc.contributor.authorRamirez-Herrera, MTen_AU
dc.contributor.authorBlecher, Len_AU
dc.contributor.authorGoff, JRen_AU
dc.contributor.authorCorona, Nen_AU
dc.contributor.authorChagué-Goff, Cen_AU
dc.contributor.authorLagos, Men_AU
dc.contributor.authorHutchinson, Ien_AU
dc.contributor.authorAguilar, Ben_AU
dc.contributor.authorGoguitchaichrili, Aen_AU
dc.contributor.authorMachain-Castillo, MLen_AU
dc.contributor.authorRangel, Ven_AU
dc.contributor.authorZawadzki, Aen_AU
dc.contributor.authorJacobsen, GEen_AU
dc.date.accessioned2015-11-16T05:37:17Zen_AU
dc.date.available2015-11-16T05:37:17Zen_AU
dc.date.issued2013-05-14en_AU
dc.date.statistics2015-11-13en_AU
dc.description.abstractThe study and preservation of tsunami deposits have being challenging in humid tropical environments. While tsunami deposits have been widely studied at temperate latitudes, few studies assess this problem in tropical environments due to the difficulties intrinsic to these places (e.g. tsunami deposit preservation, post-burial changes in a tropical environment, mangrove vegetation, difficult access, wildlife, among others). Here we assess the problem of tsunami-deposits preservation on the Jalisco-Colima tropical coast of Mexico, which parallels the more than 1000-km long Mexican subduction, where historical accounts indicate the occurrence of two significant tsunamis on June 3 and 22, 1932 (Corona and Ramírez-Herrera, 2012a, Valdivia et al., 2012). However, up to date, no geological evidence of these events has been reported. We present geological evidence of two large tsunamis related to the June 3, M 8.2 earthquake, and the June 22, Ms 6.9 landslide-triggering event of 1932 (Corona and Ramírez-Herrera, 2012a, b). A multiproxy approach was applied to unravel the nature of anomalous sand units and sharp basal contacts in the stratigraphy of a number of sites at Palo Verde estuary, El Tecuán swales and marsh, and La Manzanilla swales, on the Jalisco-Colima coast. Lines of evidence including historical, geomorphological, stratigraphic, grain size, organic matter content, microfossils (diatoms and foraminifera), geochemical content, magnetic susceptibility and AMS analyses, together with dating (210Pb and 14C), and modeling, corroborate the presence of tsunami deposits of both the 3 June 1932 tsunami at El Tecuán and La Manzanilla, and the 22 June 1932 tsunami at Palo Verde. Further evidence of earlier tsunamis, at least four events, is also evident in the stratigraphy. Work in progress should reveal the chronology of the earliest tsunamis and their origin. Corona, N., M.T. Ramirez-Herrera. (2012a) Mapping and historical reconstruction of the great Mexican 1932 tsunami. Natural Hazards and Earth System Sciences, 12, 1337-1352. NHESS-2011-369. Corona Morales N. y M.T. Ramírez-Herrera. (2012b) Técnicas histórico-etnográficas en la reconstrucción y caracterización de tsunamis: El ejemplo del gran tsunami del 22 de junio de 1932, en las costas del Pacífico Mexicano. Revista de Geografía Norte Grande. 53, 107-122. Valdivia O. L., Castillo A. M.R., Trejo E. M. (2012). Tsunamis en Jalisco, Geocalli, Cuadernos De Geografía, Universidad de Guadalajara. Año 13, No. 25, 103p.en_AU
dc.identifier.citationRamirez-Herrera, M. T., Blecher, L., Goff, J., Corona, N., Chagué-Goff, C., Lagos, M., Hutchinson, I., Aguilar, B., Goguitchaichrili, A., Machain-Castillo, M. L., Rangel, V., Zawadzki, A., & Jacobsen, G. (14-17 May 2013). The geological trace of the 1932 tsunamis in the tropical Jalisco-ColimaCoast, Mexico. Paper presented at the American Geophysical Union (AGU) Fall Meeting, 9 - 13 December 2013, San Francisco, California.en_AU
dc.identifier.conferenceenddate13 December 2013en_AU
dc.identifier.conferencenameAmerican Geophysical Union (AGU) Fall Meetingen_AU
dc.identifier.conferenceplaceSan Francisco, Californiaen_AU
dc.identifier.conferencestartdate9 December 2013en_AU
dc.identifier.govdoc6292en_AU
dc.identifier.otherNH41A-08en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/6427en_AU
dc.language.isoenen_AU
dc.publisherAmerican Geophysical Unionen_AU
dc.subjectTsunamisen_AU
dc.subjectWild animalsen_AU
dc.subjectPreservationen_AU
dc.subjectGeologyen_AU
dc.subjectMexicoen_AU
dc.subjectHumidityen_AU
dc.titleThe geological trace of the 1932 tsunamis in the tropical Jalisco-Colimaen_AU
dc.typeConference Abstracten_AU
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