Universität zu Köln

Weber, M., Helwig, S. L., Bauer, K., Haberland, Ch., Koch, O., Ryberg, T., Maercklin, N., Ritter, O. and Schulze, A. (2012). Near-surface properties of an active fault derived by joint interpretation of different geophysical methods - the Arava/Araba Fault in the Middle East. Near Surf. Geophys., 10 (5). S. 381 - 391. HOBOKEN: WILEY. ISSN 1873-0604

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Abstract

The motion of tectonic plates is accommodated at fault zones. One of the unanswered questions about fault zones relates to the role they play in controlling shallow and local hydrology. This study focuses on the Arava/Araba Fault (AF) zone, the southern portion of the Dead Sea Transform (DST) in the Middle East. We combine seismic and electromagnetic methods (EM) to image the geometry and map the petro-physical properties and water occurrence in the top 100 m of this active fault. For three profiles, P-velocity and resistivity images were derived independently. Using a neural network cluster analysis three classes with similar P-velocity and resistivities could then be determined from these images. These classes correspond to spatial domains of specific material and wetness. The first class occurs primarily east of the fault consisting of 'wet' sand (dunes) and brecciated sediments, whereas the second class composed of similar material located west of the fault is 'dry'. The third class lies at depth below ca. 50 m and is composed of highly deformed and weathered Precambrian rocks that constitute the multi-branch fault zone of the AF at this location. The combination of two independent measurements like seismics and EM linked by a stringent mathematical approach has thus shown the potential to delineate the interplay of lithology and water near active faults.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Weber, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Helwig, S. L. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bauer, K. UNSPECIFIED UNSPECIFIED UNSPECIFIED Haberland, Ch. UNSPECIFIED UNSPECIFIED UNSPECIFIED Koch, O. UNSPECIFIED UNSPECIFIED UNSPECIFIED Ryberg, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Maercklin, N. UNSPECIFIED UNSPECIFIED UNSPECIFIED Ritter, O. UNSPECIFIED UNSPECIFIED UNSPECIFIED Schulze, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-481332
DOI:	10.3997/1873-0604.2012031
Journal or Publication Title:	Near Surf. Geophys.
Volume:	10
Number:	5
Page Range:	S. 381 - 391
Date:	2012
Publisher:	WILEY
Place of Publication:	HOBOKEN
ISSN:	1873-0604
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language DEAD-SEA TRANSFORM; ARCHITECTURE; IMAGES; MODELS Multiple languages Geochemistry & Geophysics Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/48133