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The Use of Slingram Method to Map the Marine Water Intrusion: A Case Study from the Trabzon, Turkey
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 23rd European Meeting of Environmental and Engineering Geophysics, Sep 2017, Volume 2017, p.1 - 5
Abstract
Geophysical methods are successful in identifying of possible marine water intrusion in coastal regions. The marine water intrusion may have unfavorable effect on agricultural soil and freshwater quality. A geophysical electromagnetic survey was performed to mapping possible marine water intrusion effect along the Değirmendere River in coastal regions of Trabzon, Turkey. The survey consists of Loop-Loop electromagnetic method (Slingram). The two different study area were selected along the Değirmendere River, the first one included 3 parallel profiles from north to south (the length of one profile is 52m and the interval between profiles are 6m from west and east direction) and the second study area consist of 2 profiles from north to south direction 147m and 82m respectively. Also the study areas were about 640m and 100m distance from the marine respectively. The data were collected by EM-34-3 instrument with vertical dipole mode (VD) and horizontal dipole mode (HD) for 10m and 20m interval between transmitter and receiver coils along profiles. The marine water intrusion zones were determined by the help of apparent conductivity values in studied area. In addition, the general structure of the underground has been tried to reveal with Slingram method.