Title :
A change of Aral Sea´s water area by satellite data
Author :
Nakayama, Yasunori ; Tanaka, Sotaro ; Endo, Kunihiko ; Suga, Yuzo
Author_Institution :
Remote Sensing Technol. Center of Japan, Tokyo, Japan
Abstract :
Deals with a monitoring of the change of Aral Sea´s water area and its vicinity using multi-temporal satellite data and the other auxiliary sources. A mosaicked LANDSAT MSS and seven NOAA AVHRR images which had been registered to a Lambert´s conformal conic coordinates were used. Normalized difference vegetation index (NDVI) images were obtained using two band data of the visible and near-infrared. The change of Aral Sea´s water area was measured by a thresholding method. The Aral Sea in the beginning of 1990s showed a decrease in area to under 55% of that in comparison with the statistic sources and maps. It was presumed that the main reason of water area decrease was caused by water consumption for the desert irrigation
Keywords :
hydrology; lakes; remote sensing; water pollution; AD 1960 to 1993; Aral Sea; Kazakhstan Uzbekistan; USSR; change; hydrology; infrared; optical remote sensing image; salt lake area change; vegetation; visible; water area; water balance; water pollution; Data analysis; Image analysis; Lakes; Los Angeles Council; Mouth; Ocean temperature; Remote sensing; Rivers; Satellite broadcasting; Statistics;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 1993. IGARSS '93. Better Understanding of Earth Environment., International
Conference_Location :
Tokyo
Print_ISBN :
0-7803-1240-6
DOI :
10.1109/IGARSS.1993.322521
