New Insights into the Internal Structures and Geotechnical Rock Properties of the Giant San Andres Landslide, El Hierro Island, Spain

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985831%3A_____%2F23%3A00571110" target="_blank" >RIV/67985831:_____/23:00571110 - isvavai.cz</a>

Alternative codes found

RIV/67985891:_____/23:00571110

Result on the web

<a href="https://doi.org/10.3390/rs15061627" target="_blank" >https://doi.org/10.3390/rs15061627</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/rs15061627" target="_blank" >10.3390/rs15061627</a>

Result language

angličtina

Original language name

New Insights into the Internal Structures and Geotechnical Rock Properties of the Giant San Andres Landslide, El Hierro Island, Spain

Original language description

The San Andres landslide on El Hierro (Canary Islands) represents a rare opportunity to study an incipient volcanic island flank collapse with an extensive onshore part. The presented research improves the knowledge of the internal structure and rock characteristics of a mega-landslide before its complete failure. The investigation combines multiple geophysical measurement techniques (active and passive seismic) and remotely sensed, high spatial resolution surveys (unmanned aerial vehicle) with in situ and laboratory geotechnical descriptions to characterize the rock properties inside and outside the San Andres landslide. The available geophysical and geological data have been integrated into 3D geomodels to enhance their visual interpretation. The onshore geophysical investigations helped detect the possible San Andres landslide sliding surfaces at depths between 320 m and 420 m, with a rather planar geometry. They also revealed that rocks inside and outside of the landslide had similar properties, which suggests that the previous fast movements of the landslide did not affect the bulk properties of the displaced rocks as the failure chiefly occurred along the weakened sliding plane. Uniaxial strength tests on basalt rocks further indicate a high variability and spatial heterogeneity of the rock strength properties due to the different types of volcanic rocks and their texture. The new information on the rock properties and structural setting of the San Andres landslide can now be used to develop realistic geotechnical slope models of the onshore part of the flank collapse that are possibly applicable for slope stability or deformation calculations. It will also help assess related hazards marked by a low occurrence probability and a high impact potential.

Czech name

—

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

20701 - Environmental and geological engineering, geotechnics

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

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

Name of the periodical

Remote Sensing

ISSN

2072-4292

e-ISSN

2072-4292

Volume of the periodical

15

Issue of the periodical within the volume

6

Country of publishing house

CH - SWITZERLAND

Number of pages

22

Pages from-to

1627

UT code for WoS article

000958342700001

EID of the result in the Scopus database

2-s2.0-85151142683