Historic and ancient tsunamis uncovered on the Jalisco-Colima Pacific coast, the Mexican subduction zone

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985831%3A_____%2F16%3A00459723" target="_blank" >RIV/67985831:_____/16:00459723 - isvavai.cz</a>

Alternative codes found

RIV/00216224:14310/16:00089892

Result on the web

<a href="http://dx.doi.org/10.1016/j.geomorph.2016.02.011" target="_blank" >http://dx.doi.org/10.1016/j.geomorph.2016.02.011</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.geomorph.2016.02.011" target="_blank" >10.1016/j.geomorph.2016.02.011</a>

Result language

angličtina

Original language name

Historic and ancient tsunamis uncovered on the Jalisco-Colima Pacific coast, the Mexican subduction zone

Original language description

Research on extreme wave events such as tsunamis using the geological record in areas of infrequent and or small magnitude earthquakes can aid in extending the long-term history and recurrence intervals of large events. This information is valuable for risk management and community preparedness in coastal areas. Here we investigate tsunami deposits on the Jalisco coast of Mexico that overlies the subducting Rivera Plate under the North American plate, an area due for a large thrust earthquake and potential tsunami. Here, we apply a full battery of rock-magnetic analyses that also include a detailed AMS study and other typically applied proxies in tsunami deposits research. We present evidence to demonstrate that anomalous sand units with sharp basal contacts at La Manzanilla, Tenacatita Bay, and El Tecuán shore sites on the Jalisco coast may be the products of tsunamis generated by known historical (Ms 8.2 earthquake of 3 June 1932) and other earlier tsunamigenic earthquakes. A sandy unit with a sharp basal contact, flame structures at the base, rip-up clasts at La Manzanilla, and four sand units with sharp basal contact overlying buried soils at El Tecuán, together with other proxies, such as magnetic properties and others, suggest tsunami deposits. 210Pb dating of sediments slightly above the upper sand layer indicate an age A.D. 1935 11 at El Tecuán. Historical accounts of tsunami inundation at both sites provide further evidence that this is most probably the result of the 3 June 1932 tsunami. Hence this study may provide the first evidence of a tsunami triggered by this earthquake and also of three probable predecessors. Further evidence of at least three earlier tsunamis that occurred since the fifteenth century is also evident in the stratigraphy. These events may correspond to events listed in historical archives, namely the 1563, 1816, and/or the 1818 events.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

DB - Geology and mineralogy

OECD FORD branch

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Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Geomorphology

ISSN

0169-555X

e-ISSN

—

Volume of the periodical

259

Issue of the periodical within the volume

April 15

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

15

Pages from-to

90-104

UT code for WoS article

000374199000008

EID of the result in the Scopus database

2-s2.0-84958811780