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Three large prehistoric earthquakes in the Eastern Alps evidenced by cave rupture and speleothem damage

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985891%3A_____%2F22%3A00557129" target="_blank" >RIV/67985891:_____/22:00557129 - isvavai.cz</a>

  • Alternative codes found

    RIV/00216224:14310/22:00129309

  • Result on the web

    <a href="https://www.sciencedirect.com/science/article/pii/S0169555X22001350?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0169555X22001350?via%3Dihub</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1016/j.geomorph.2022.108242" target="_blank" >10.1016/j.geomorph.2022.108242</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Three large prehistoric earthquakes in the Eastern Alps evidenced by cave rupture and speleothem damage

  • Original language description

    Spectacular geomorphic evidence of recent tectonic activity and three potentially strong prehistoric earthquakes were discovered in Obir Caves in the Karawanken Mountains. This paper presents active fault structures, geomorphic features, and the age constraints attributed to particular seismotectonic events. The 1976 Mw 6.7 Friuli earthquake about 100 km from Obir Caves caused only local speleothem damage. The 100 km hypocentral distance enabled attenuation of the seismic waves so speleothem damage due to stalagmite resonance frequency was dampened. The documented dripstone column damage was rather caused by its sudden shortening due to passing elastic S-waves with estimated 3.5 (+8.2/−1.5) mm PGD amplitudes. At least three distinct seismotectonic events in the Late Pleistocene and Early to Middle Holocene were constrained by radiometric dating. The 40.6 cm sinistral fault slip occurred between 41.8 ± 1.3 ka and 18.7 ± 0.4 ka ago, the 2.6 cm dextral oblique reverse fault slip happened between 10.73 ± 0.23 and 8.61 ± 0.15 ka ago, and another speleothem damage event took place between 6.28 ± 0.24 ka and 5.7 ± 1.2 ka ago. These events were most probably accompanied by distinct destructive to very destructive paleoearthquakes with local intensities ranging from VIII to X on the ESI 2007 scale, significant rock weakening, and forming the large deep-seated gravitational slope deformation on the southeastern mountain slopes adjacent to Obir Caves.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    10505 - Geology

Result continuities

  • Project

    <a href="/en/project/GC22-24206J" target="_blank" >GC22-24206J: Earthquake-triggered landslides in recently-active and stabilized accretionary wedges</a><br>

  • Continuities

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Others

  • Publication year

    2022

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    Geomorphology

  • ISSN

    0169-555X

  • e-ISSN

    1872-695X

  • Volume of the periodical

    408

  • Issue of the periodical within the volume

    1 July

  • Country of publishing house

    NL - THE KINGDOM OF THE NETHERLANDS

  • Number of pages

    17

  • Pages from-to

    108242

  • UT code for WoS article

    000800209900002

  • EID of the result in the Scopus database

    2-s2.0-85127508865