Ardali, Ayca Sultan, Tezkan, Buelent and Gurer, Aysan ORCID: 0000-0001-5731-5917 (2018). On the Salt Water Intrusion into the Durusu Lake, Istanbul: A Joint Central Loop TEM And Multi-Electrode ERT Field Survey. Pure Appl. Geophys., 175 (8). S. 3037 - 3051. BASEL: SPRINGER BASEL AG. ISSN 1420-9136

Full text not available from this repository.

Abstract

Durusu Lake is the biggest and most important freshwater source supplying drinking water to the European side of Istanbul. In this study, electrical resistivity tomography (ERT) and transient electromagnetic (TEM) measurements were applied to detect a possible salt water intrusion into the lake and to delineate the subsurface structure in the north of Durusu Lake. The ERT and TEM measurements were carried out along six parallel profiles extending from the sea coast to the lake shore on the dune barrier. TEM data were interpreted using different 1-D inversion methods such as Occam, Marquardt, and laterally constrained inversion (LCI). ERT data were interpreted using 2-D inversion techniques. The inversion results of ERT and TEM data were shown as resistivity depth sections including topography. The sand layer spreading over the basin has a resistivity of 150-400 Omega m with a thickness of 5-10 m. The sandy layer with clay, silt, and gravel has a resistivity of 15-100 Omega m and a thickness of 10-40 m followed by a clay layer of a resistivity below 10 Omega m. When the inversion of these data is interpreted along with the hydrogeology of the area, it is concluded that the salt water intrusion along the dune barrier is not common and occurs at a particular area where the distance between lake and sea is very close. Using information from boreholes around the lake, it was verified that the common conductive region at depths of 30 m or more consists of clay layers and clay lenses.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Ardali, Ayca SultanUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tezkan, BuelentUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gurer, AysanUNSPECIFIEDorcid.org/0000-0001-5731-5917UNSPECIFIED
URN: urn:nbn:de:hbz:38-178363
DOI: 10.1007/s00024-018-1813-1
Journal or Publication Title: Pure Appl. Geophys.
Volume: 175
Number: 8
Page Range: S. 3037 - 3051
Date: 2018
Publisher: SPRINGER BASEL AG
Place of Publication: BASEL
ISSN: 1420-9136
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
DOMAIN ELECTROMAGNETIC METHOD; SEAWATER INTRUSION; ELECTRICAL-RESISTIVITY; CONSTRAINED INVERSION; SALINE GROUNDWATER; AQUIFER; ISRAEL; INTERFACE; SALTWATER; SHOREMultiple languages
Geochemistry & GeophysicsMultiple languages
Refereed: Yes
URI: http://kups.ub.uni-koeln.de/id/eprint/17836

Downloads

Downloads per month over past year

Altmetric

Export

Actions (login required)

View Item View Item