Universität zu Köln

Grutzner, Christoph, Aschenbrenner, Simone, Jamsek Rupnik, Petra ORCID: 0000-0003-0809-1739, Reicherter, Klaus, Saifelislam, Nour, Vicic, Blaz ORCID: 0000-0002-3677-2112, Vrabec, Marko, Welte, Julian and Ustaszewski, Kamil (2021). Holocene surface-rupturing earthquakes on the Dinaric Fault System, western Slovenia. Solid Earth, 12 (10). S. 2211 - 2235. GOTTINGEN: COPERNICUS GESELLSCHAFT MBH. ISSN 1869-9529

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Abstract

The Dinaric Fault System in western Slovenia, consisting of NW-SE-trending, right-lateral strike-slip faults, accommodates the northward motion of Adria with respect to Eurasia. These active faults show a clear imprint in the morphology, and some of them hosted moderate instrumental earthquakes. However, it is largely unknown if the faults also had strong earthquakes in the late Quaternary. This hampers our understanding of the regional tectonics and the seismic hazard. Geological evidence of co-seismic surface ruptures only exists for one historical event, the 1511 Idrija earthquake with a magnitude of similar to M 6.8, but the causative fault is still disputed. Here we use geomorphological data, near-surface geophysical surveys, and paleoseismological trenching to study two of these faults: the Predjama Fault and the Idrija Fault. In a paleoseismological trench across the Predjama Fault we found deformation features that may have been caused by an earthquake between 13-0.7 ka, very likely not earlier than 8.4 ka. At the Idrija Fault, a surface-rupturing earthquake happened around 2.5 ka. We show that instrumental and historical seismicity data do not capture the strongest events in this area.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Grutzner, Christoph UNSPECIFIED UNSPECIFIED UNSPECIFIED Aschenbrenner, Simone UNSPECIFIED UNSPECIFIED UNSPECIFIED Jamsek Rupnik, Petra UNSPECIFIED orcid.org/0000-0003-0809-1739 UNSPECIFIED Reicherter, Klaus UNSPECIFIED UNSPECIFIED UNSPECIFIED Saifelislam, Nour UNSPECIFIED UNSPECIFIED UNSPECIFIED Vicic, Blaz UNSPECIFIED orcid.org/0000-0002-3677-2112 UNSPECIFIED Vrabec, Marko UNSPECIFIED UNSPECIFIED UNSPECIFIED Welte, Julian UNSPECIFIED UNSPECIFIED UNSPECIFIED Ustaszewski, Kamil UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-592589
DOI:	10.5194/se-12-2211-2021
Journal or Publication Title:	Solid Earth
Volume:	12
Number:	10
Page Range:	S. 2211 - 2235
Date:	2021
Publisher:	COPERNICUS GESELLSCHAFT MBH
Place of Publication:	GOTTINGEN
ISSN:	1869-9529
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language (NORTHWEST EXTERNAL DINARIDES; NORTH ANATOLIAN FAULT; EASTERN SOUTHERN ALPS; HISTORICAL SEISMICITY; ACTIVE TECTONICS; 1976 FRIULI; EVOLUTION; SLIP; DEFORMATION; GPS Multiple languages Geochemistry & Geophysics Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/59258