Modeling and Mapping Temperature Secchi Depth and Chlorophyll a Distributions of Zinav Lake by Using GIS and Landsat 7 ETM Imagery
Yazarlar (6)
Prof. Dr. Hakan Mete DOĞAN
Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Prof. Dr. Fatih POLAT
Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Dr. Öğr. Üyesi Ekrem BUHAN
Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Doç. Dr. Orhan Mete KILIÇ
Tokat Gaziosmanpaşa Üniversitesi, Türkiye
| Makale Türü | Özgün Makale |
| Makale Alt Türü | Uluslararası alan indekslerindeki dergilerde yayınlanan tam makale |
| Dergi Adı | Journal of Agricultural Faculty of Gaziosmanpasa University |
| Dergi ISSN | 1300-2910 |
| Dergi Tarandığı Indeksler | TUBITAK-ULAKBIM, GOOGLE SCHOLAR |
| Makale Dili | İngilizce |
| Basım Tarihi | 11-2016 |
| Cilt No | 3 |
| Sayfalar | 55 / 60 |
| Makale Linki | https://doi.org/10.13002/jafag1050 |
| Özet |
| Temperature, secchi depth, and chlorophyll-a (in relation to secchi depth) of Zinav Lake in Turkey were modeled and mapped by using Geographic Information Systems (GIS) and Remote Sensing (RS). Temperature (oC), secchi depth (m), and chlorophyll-a (mg/l) field data were collected from geo-referenced 5 stations on the lake between September- 2011 and October-2012 in monthly basis. Secchi depth was measured by Hidrobios brand secchi disc with 25 cm diameter. A multi-measuring device (YSI-556MPS) was utilized to determine temperature values. Chlorophyll-a was measured by using Helios-α model UV-Vis spectrophotometer and monochromatic method. Utilizing geo-referenced field data and the digital number (DN) values of thermal (6.1) band of Landsat-7 ETM+ image (date: 27 April 2012 and pat/row: 175/32), temperature raster map of Zinav Lake was created. Relationships between secchi depth and band1/band3 values of Landsat-7 ETM+ image, and between secchi depth and chlorophyll-a were modeled by curve fit analysis. Running the produced models in GIS, secchi depth, temperature and chlorophyll-a raster maps of Zinav Lake were generated. The results showed that the lake has anoxic conditions and it exhibits eutrophic characters. |
| Anahtar Kelimeler |
