Lake Van, Turkey
Lake Van is the fourth largest of all terminal lakes in the world (surface area of 3,522 km², maximum depth of 451 m). Previous scientific work has shown that annually laminated sediments exist in Lake Van, which made it a target for the European Lake Drilling Program in ICDP. In this framework a seismic pre-site survey at Lake Van was carried out from June 1st to June 15th 2004. In total we collected 50 profiles with a length of ~850 km by means of a high-resolution multichannel seismic system and a GeoChirp system.
The deepest part of the lake, the Tatvan Basin, is characterized by an alternating succession of well-stratified and chaotically reflecting layers. In contrast, a small secondary basin shows an undisturbed sediment succession, while the separating sedimentary ridge is characterized by a condensed sediment succession. The secondary basin and the sedimentary ridge are both promising locations for ICDP-sites.
After the survey, further research, including a second expedition, was carried out at CAU Kiel, after the lake became target for ICDP drilling, and seismic data were published thereafter.
Duration: 02.06.04 - 13.06.04
Krastel, Gerriets, Demirel
- GeoChirp I
- MCS, Syntron 100 m, mini GI
Project Web Pages: Sebastian Krastel, Kiel University
Cukur, Deniz, Krastel S., Schmincke HU., Sumita M., Tomonaga, Y., Cagatay MN. (2014) Water level changes in Lake Van, Turkey, during the past ca. 600 ka: climatic, volcanic and tectonic controls. J Paleolimnol., 52, 201–214, https://doi.org/10.1007/s10933-014-9788-0.
Cukur, Deniz, Krastel S., Demirel-Schlüter, F., Demirbag E., Imren, C., Niessen, F., Mustafa Toker M., PaleoVan-Working Group (2013) Sedimentary evolution of Lake Van (Eastern Turkey) reconstructed from high-resolution seismic investigations. Int J Earth Sci (Geol Rundsch), 102, 571–585, https://doi.org/10.1007/s00531-012-0816-x.
Cukur, D., Krastel, S., Schmincke, H.-U., Sumita, M., Çağatay, M.N., Meydan, A.F., Damcı, E., Stockhecke, M., 2014. Seismic stratigraphy of Lake Van, eastern Turkey. Quaternary Science Reviews 104, 63-84, https://doi.org/10.1016/j.quascirev.2014.07.016.
Cukur, D., Krastel, S., Tomonaga, Y., Schmincke, H.-U., Sumita, M., Meydan, A.F., Çağatay, M.N., Toker, M., Kim, S.-P., Kong, G.-S., 2016. Structural characteristics of the Lake Van Basin, eastern Turkey, from high-resolution seismic reflection profiles and multibeam echosounder data: geologic and tectonic implications. International Journal of Earth Sciences (Geologische Rundschau) 106, 239-253, https://doi.org/10.1007/s00531-016-1312-5 .
Mobilization of vessel
Deployment of airgun