Horizontal strain 3He/4He ratio and intra-plate earthquake swarms

Title:

Horizontal strain 3He/4He ratio and intra-plate earthquake swarms

Creator:

Vladimír Schenk and Zdeňka Schenková

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:4a36a183-f702-480a-8362-dc12e2ad010b
uuid:4a36a183-f702-480a-8362-dc12e2ad010b
issn:1214-9705

Subject:

Geologie. Meteorologie. Klimatologie, zemětřesení, earthquake, Čechy západní (Česko), Bohemia, Western (Czechia), horizontal strain, 3He/4He ratio, intra-plate earthquake swarms, 7, and 551

Type:

article, články, model:article, and TEXT

Format:

print, bez média, and svazek

Description:

In the West Bohemian region, Central Europe, the volcanic activity appeared in late Tertiary, the Miocene. The present intraplate magmatic activity makes itself felt by flows of gaseous and liquid fluids, enhanced geodynamic mobility of geological structures and generation of earthquake swarms. Position data of two permanent Global Navigation Satellite Systems (GNSS) stations located in the region were used to calculate the time variations of the horizontal strain field that were compared with the 3He/4He ratios and earthquake swarm occurrences. The strains and 3He/4He ratios displayed a positive relation supported by the earlier opinions on the dependence of the dynamics of the region on the fluid occurrence. Analysis of these quantities observed in 2006-2007 period indicated when the compressions calmed and the 3He/4He ratios grew then the earthquake events occurred. It presumes the detected variations relate to compressions and extensions in the region. The strain field changes monitored during the 2008 swarm proved the relation found above. The observed connections could be applied in future at selected regions in earthquake forecast procedures., Vladimír Schenk and Zdenka Schenková., and Obsahuje bibliografii

Language:

English

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Source:

Acta geodynamica et geomaterialia : | 2011 Volume:8 | Number:3 (163)

Harvested from:

CDK

Metadata only:

false