Source area morphometry and high depletion rate of landslides may indicate their coseismic origin

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985891%3A_____%2F24%3A00584930" target="_blank" >RIV/67985891:_____/24:00584930 - isvavai.cz</a>

Alternative codes found

RIV/00216224:14310/24:00139360 RIV/00025798:_____/24:10169086

Result on the web

<a href="https://doi.org/10.1016/j.enggeo.2024.107424" target="_blank" >https://doi.org/10.1016/j.enggeo.2024.107424</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.enggeo.2024.107424" target="_blank" >10.1016/j.enggeo.2024.107424</a>

Result language

angličtina

Original language name

Source area morphometry and high depletion rate of landslides may indicate their coseismic origin

Original language description

Ancient coseismic landslides indicate prehistoric earthquakes and may also be a measure of their intensity. Their identification in the landscape remains, however, challenging. We used field geologic observations of source areas of recent rainfall-induced and earthquake-induced landslides to define a morphometric index that can distinguish between these two types of triggers. Morphometries of 129 landslides from tropical, subtropical and temperate zones developed in a variety of bedrock types were described by using the following parameters: i) depletion index (Id), i.e. the ratio between the length of the depleted part and the length of the source area, ii) relative slope height (Hrel) and iii) source area angle (S), i.e. the angle between the top of the line connecting the scarp top with the toe of the source area and the horizontal plane. They were obtained using globally available digital elevation models and satellite images. Their combination into an Index of Potential Trigger (IPT) successfully distinguished between the two types of landslide triggers with an overall accuracy of 87%. The rainfall-induced landslides had a significantly lower average IPT value of 0.01 as compared with 0.37 for the coseismic landslides. The index of potential trigger may be a useful and readily implemented morphometric tool for preliminary identification of prehistoric coseismic landslides recorded in the current topography.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10508 - Physical geography

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

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

Name of the periodical

Engineering Geology

ISSN

0013-7952

e-ISSN

1872-6917

Volume of the periodical

330

Issue of the periodical within the volume

FEB

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

16

Pages from-to

107424

UT code for WoS article

001176854800001

EID of the result in the Scopus database

2-s2.0-85183939257