Significance of shallow seismic reflection (SSR) and ground penetrating radar (GPR) profiling on the Modern Coast line History of the Bedre area, Egirdir Lake, Isparta, Turkey


Kanbur Z. , Gormus M. , KANBUR S. , Durhan Z.

JOURNAL OF ASIAN EARTH SCIENCES, vol.38, no.6, pp.262-273, 2010 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 38 Issue: 6
  • Publication Date: 2010
  • Doi Number: 10.1016/j.jseaes.2010.02.003
  • Title of Journal : JOURNAL OF ASIAN EARTH SCIENCES
  • Page Numbers: pp.262-273
  • Keywords: Shallow seismic reflection, Ground penetrating radar, GPR, Coastal line, Egirdir Lake, Bedre coastal area, Sedimentation, Stratigraphy, Facies, SEDIMENTOLOGY, BARRIER, ANGLE, RESOLUTION, ATLANTIC, SURFACE

Abstract

Lake level changes and settlement places constitute the main problems in controlling the coastal environment along the Egirdir Lake, SW Turkey. The Quaternary geology in the Bedre Coast was studied based on shallow seismic reflection (SSR) survey, ground penetrating radar (GPR) profiles, and the data derived from boreholes and investigations in the field. Thus, six seismic and five radar facies were determined respectively The geological units from the basement rock to the Holocene deposits were imaged by the SSR technique GPR technique is used for the shallower part, ranging from the ancient to the Modern lacustrin sediments. The Quaternary lake level changes, borehole, seismic and radar data indicate that a pond with a connected to the Lake around the Bedre area existed in the last century Sand barriers, climate, topographical elevation and erosions of the basement rocks control the sedimentation of the back barrier of the coastal line. Marsh muddles and ancient beach sands are the main sediments of the pond area From the profiles, ancient buried sand barriers were also seen in the lake side. In our view, as the previous lake level dropped from the highstand, the ancient sand barrier was formed which divided the lake and the pond and isolated a small inland lake which lies 4 m below the level of the coastal barrier For agricultural purposes, artificial man-made constructions were done on the barrier and channels Thus, dry agricultural land appeared in the last 50 years on the pond side. (C) 2010 Elsevier Ltd All rights reserved