Present-day kinematic behaviour of active faults in the Eastern Alps

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985891%3A_____%2F19%3A00506577" target="_blank" >RIV/67985891:_____/19:00506577 - isvavai.cz</a>

Alternative codes found

RIV/00216224:14310/19:00109579

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0040195118304372" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0040195118304372</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.tecto.2018.12.024" target="_blank" >10.1016/j.tecto.2018.12.024</a>

Result language

angličtina

Original language name

Present-day kinematic behaviour of active faults in the Eastern Alps

Original language description

The Neogene to Quaternary lateral extrusion of the Eastern Alps towards the Pannonian Basin is accommodated by a system of strike-slip faults. Despite decades-lasting GPS observations, no information on contemporary kinematic behaviour of these faults has been available. Therefore, we had monitored subsidiary and/or conjugated faults associated to these major fault systems in six caves throughout the Eastern Alps over a 1.5-2.5-year observation period by means of high-resolution three-dimensional Moire extensometers TM71. We confirmed that the monitored faults revealed present-day aseismic displacements at a micrometer level during several activity phases that usually also coincided with periods of increased local seismicity. The annual displacement rates of the monitored faults were mostly about an order of magnitude smaller than the rates of the entire crustal wedges revealed from GNSS. The particular displacements consisted of a variety mechanisms and faulting regimes. Fault dilations and compressions were mostly associated with thermal-volumetric variations, normal dip-slips and downward hanging-wall displacements originated due to gravitational relaxation or mass movement. Displacements with the same mechanisms as the geologically documented fault systems or with an upward component were attributed to tectonic creep and strain built-up during the interseismic period. On the other hand, the countervailing displacements opposite to the master fault kinematics were most probably caused by elastic rebound. They were usually registered few days in advance to distinct local earthquakes that were simultaneously activated at locked segments within the same deformation band. Therefore, the countervailing events could be considered an indicator of impending near earthquake within the rebound zone, their better understanding and real-time detecting could be a step forward to an effective earthquake early warning in similar geological settings.

Czech name

—

Czech description

—

Type

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

CEP classification

—

OECD FORD branch

10505 - Geology

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2019

Confidentiality

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

Name of the periodical

Tectonophysics

ISSN

0040-1951

e-ISSN

—

Volume of the periodical

752

Issue of the periodical within the volume

FEB 5

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

23

Pages from-to

1-23

UT code for WoS article

000458943400001

EID of the result in the Scopus database

2-s2.0-85059739742