Evaluating the thermal stratification of Koycegiz Lake (SW Turkey) using in-situ and remote sensing observations

Date

2019-10-01

Author

Kurtulus, Tugba
Kurtulus, Bedri
Avsar, Ozgur
Avşar, Ulaş

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

220
views

0
downloads

The goal of this study is to evaluate the thermal properties of Koycegiz Lake using in-situ measurements and satellite based thermal infrared imagery. In-situ measurements of surface water temperature and water depth, as well as meteorological data, were used in the analysis. Images of the Landsat 8 TIRS (Thermal Infrared (IR) Sensors) at IR channels were taken from the data archives of United State Geological Survey (USGS), and were validated with surface in-situ measurements. Specific Electrical conductivity (SEC) measurements done at the bottom of the lake were also used for a better understanding of the water thermal stratification and types (cold/hot) that impact on the underwater physical properties of the lake. In-situ measurements at the water surface were interpolated using a new method known as 'Empirical Bayesian Kriging (EBK)'. The 2D and 3D (dimensional) temperature maps were generated using the Delaunay triangulation technique which utilizes nearest neighbor interpolation method. The results show that the correlation coefficient (R-2) between water surface temperatures (WST) from in-situ measurements and IR channels is found to be greater than 0.86. The analysis of 2D and 3D temperature mapping of the lake water revealed evidences for subaqueous cold spring occurrence in the northern part and subaqueous hot springs in the south-western part of Koycegiz Lake. It is concluded that correlating in-situ water temperature measurements to Landsat 8 TIRS images is an efficient method for temporal and spatial evaluation of lake water characteristics.

Subject Keywords

Earth-Surface Processes, Geology

URI

https://hdl.handle.net/11511/42451

Journal

JOURNAL OF AFRICAN EARTH SCIENCES

DOI

https://doi.org/10.1016/j.jafrearsci.2019.103559

Collections

Department of Geological Engineering, Article

Suggestions

OpenMETU
Core

Morphometric evaluation of the Afsin-Elbistan lignite basin using kernel density estimation and Getis-Ord's statistics of DEM derived indices, SE Turkey SARP, Gülcan; Duzgun, Sebnem (Elsevier BV, 2015-11-01) A morphometric analysis of river network, basins and relief using geomorphic indices and geostatistical analyses of Digital Elevation Model (DEM) are useful tools for discussing the morphometric evolution of the basin area. In this study, three different indices including valley floor width to height ratio (V-f), stream gradient (SL), and stream sinuosity were applied to Afsin-Elbistan lignite basin to test the imprints of tectonic activity. Perturbations of these indices are usually indicative of differenc...
Evaluation of SeaWiFS chlorophyll-a in the Black and Mediterranean seas Sancak, S; Besiktepe, ST; Yılmaz, Ayşen; Lee, M; Frouin, R (Informa UK Limited, 2005-05-20) The performance of NASA's OC2 and OC4 algorithms to estimate chlorophyll-a concentrations from SeaWiFS radiometric measurements on the global scale was tested in two contrasted bio-optical environments, the Black Sea and the Mediterranean Sea. The in situ bio-optical measurements were made during October 1999 at 25 stations. Comparisons of the in situ measurements with the concurrent SeaWiFS retrievals indicate that the OC2 and OC4 algorithms are not working satisfactorily in both seas. Case 2 waters domina...
Monitoring of chemical and isotopic compositions of geothermal waters along the North Anatolian fault zone Süer, Selin; Güleç, Nilgün Türkan; Department of Geological Engineering (2004) This study aims to determine the chemical (anion-cation) and isotopic compositions (d18O-dD-3H) of the geothermal waters along the North Anatolian Fault Zone (NAFZ) and highlight any possible seismicity-induced temporal variations during the course of two years (2002-2003) monitoring programme. The geothermal sites are alligned along a 800 km transect of the NAFZ and are, from west to east, Yalova, Efteni, Bolu, Mudurnu, Seben, Kursunlu, Hamamözü, Gözlek and Resadiye. The thermal waters of NAFZ are dominant...
Evaluation of displacement coefficient method for seismically retrofitted buildings with various ductility capacities Dicleli, Murat (Wiley, 2014-07-25) This research study is aimed at evaluating the accuracy of the displacement coefficient method (DCM) of FEMA 440 and associated nonlinear static procedure (NLSP) for actual buildings with soft story mechanism and various ductility capacities. The DCM and associated NLSP are evaluated using two existing seismically vulnerable buildings with soft story mechanism. The buildings are first retrofitted using a ductile steel-brace-link system to represent those with good ductility capacity and then retrofitted wit...
Field measurements and modeling of groundwater flow and biogeochemistry at Moses Hammock, a backbarrier island on the Georgia coast Porubsky, W. P.; Joye, S. B.; Moore, W. S.; Tuncay, Kağan; Meile, C. (Springer Science and Business Media LLC, 2011-07-01) A combination of field measurements, laboratory experiments and model simulations were used to characterize the groundwater biogeochemical dynamics along a shallow monitoring well transect on a coastal hammock. A switch in the redox status of the dissolved inorganic nitrogen (DIN) pool in the well at the upland/saltmarsh interface occurred over the spring-neap tidal transition: the DIN pool was dominated by nitrate during spring tide and by ammonium during neap tide. A density-dependent reaction-transport m...

Citation Formats

T. Kurtulus, B. Kurtulus, O. Avsar, and U. Avşar, “Evaluating the thermal stratification of Koycegiz Lake (SW Turkey) using in-situ and remote sensing observations,” JOURNAL OF AFRICAN EARTH SCIENCES, pp. 0–0, 2019, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/42451.