Statistical evaluation of the 3D monitoring of displacements of dinaric fault zone in Postojna Cave, Slovenia

Title:

Statistical evaluation of the 3D monitoring of displacements of dinaric fault zone in Postojna Cave, Slovenia

Creator:

Šebela, Stanka, Turk, Janez, Janez Mulec, and Stemberk, Josef

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:0cd30a94-ac10-40f8-b8c3-2cf3e5d72197
uuid:0cd30a94-ac10-40f8-b8c3-2cf3e5d72197
issn:1214-9705

Subject:

Geologie. Meteorologie. Klimatologie, jeskyně, geodynamika, caves, geodynamics, Postojna (Slovinsko), Postojna (Slovenia), micro-tectonic displacements, 3D monitoring of displacements, TM 71 extensometer, statistical evaluation, Postojna Cave, Slovenia, 7, and 551

Type:

article, články, model:article, and TEXT

Format:

print, bez média, and svazek

Description:

The results obtained by four years long TM 71 extensometer monitoring of 3D micro-tectonic displacements of Dinaric Fault Zone on two sites, being 260 m apart in Postojna Cave, were statistically evaluated with different methods (Kolmogorov- Smirnov test, comparison between relative displacement and earthquakes, linear regression, Kruskal-Wallis one-way analysis of variance, histograms and correlation coefficients). Responses to stress changes regarding x, y and z-axes are not the same on two monitoring sites even if we are monitoring the same fault zone. Kolmogorov-Smirnov test for comparing the two curves is applicable only for three axes combination (Postojna 1 z - Postojna 2 z, Postojna 2 y - Postojna 1 z, and Postojna 2 z - Postojna 2 y). Kruskal-Wallis analysis is most representative for z-axes. Some sharp peaks coincide with earthquake occurrences (Krn M=5.2, Cerkno M=4.0, Ilirska Bistrica M=3.9, Brežice M=2.9 and Krško M=3.1). Generally we detect very small tectonic deformations, dextral horizontal movement of 0.05 mm in 4 years for Postojna 1 and extension of 0.03 mm in 4 years for Postojna 2. Discrepancies between two sites can be attributed to complex geological structure and by the fact that studied fault zone is cut by cross-Dinaric fault zone., Stanka Šebela, Janez Turk, Janez Mulec, Blahoslav Košťák and Josef Stemberk., and Obsahuje bibliografii

Language:

English

Rights:

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

Source:

Acta geodynamica et geomaterialia : | 2009 Volume:6 | Number:2 (154)

Harvested from:

CDK

Metadata only:

false