Universität zu Köln

Adrian, Juliane ORCID: 0000-0002-6023-5173, Langenbach, Hannah, Tezkan, Buelent, Gurk, Marcus, Novruzov, Ali G. and Mammadov, Avez L. (2015). Exploration of the Near-surface Structure of Mud Volcanoes using Electromagnetic Techniques: A Case Study from Perekishkul, Azerbaijan. J. Environ. Eng. Geophys., 20 (2). S. 153 - 165. DENVER: ENVIRONMENTAL ENGINEERING GEOPHYSICAL SOC. ISSN 1943-2658

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Abstract

The general aim of this study is, for the first time, to investigate the inner structure of mud volcanoes in Azerbaijan using several near-surface electromagnetic methods. The central-loop transient electromagnetic (TEM) method and the radiomagnetotelluric (RMT) method were applied on mud volcanoes near Perekishkul, Azerbaijan. These methods complement each other in terms of depth of investigation. In particular, the RMT method generally resolves the very shallow resistivity structures (<10 m) directly beneath the mud volcanoes, whereas the TEM method provides a resolution of up to 100- to 150-m depth. The obtained data sets were processed and interpreted individually. The TEM data were interpreted by conventional 1-D inversion algorithms, i.e., Occam's and Marquardt inversion, and by a quasi-2-D laterally constrained inversion. The RMT data were interpreted by 2-D inversion. Subsequently, a combined model regarding the sediments and corresponding resistivities for the area around the mud volcanoes was derived. Overall, a resistivity range of 1-20 Omega-m was observed. The resistivity models obtained from TEM support the assumption of a three-layer subsurface for the resolved depth range. Also, a lateral resistivity variation caused by the mud volcanoes was observed. Furthermore, the RMT results indicate the presence of shallow low resistivity structures, which can be interpreted as mud reservoirs.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Adrian, Juliane UNSPECIFIED orcid.org/0000-0002-6023-5173 UNSPECIFIED Langenbach, Hannah UNSPECIFIED UNSPECIFIED UNSPECIFIED Tezkan, Buelent UNSPECIFIED UNSPECIFIED UNSPECIFIED Gurk, Marcus UNSPECIFIED UNSPECIFIED UNSPECIFIED Novruzov, Ali G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Mammadov, Avez L. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-402455
DOI:	10.2113/JEEG20.2.153
Journal or Publication Title:	J. Environ. Eng. Geophys.
Volume:	20
Number:	2
Page Range:	S. 153 - 165
Date:	2015
Publisher:	ENVIRONMENTAL ENGINEERING GEOPHYSICAL SOC
Place of Publication:	DENVER
ISSN:	1943-2658
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language INVERSION; BASIN; DEPTH; MODEL Multiple languages Geochemistry & Geophysics; Engineering, Geological Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/40245