Caspian Sea-Level Fluctuations and it's Southeastern Coastlines Evolution, During 1977-2019

Document Type : Original Article

Authors

1 Department of Physical Geography, Faculty of Geography and Environmental Planning, University of Sistsn and Baluchestan. Zahedan. Iran.

2 Shahid Beheshti University

Abstract
The main goal of this research is monitoring of the Miankale lagoon during a period of 42 years using RS & GIS. To achieve this goal, LANDSAT satellite images and field visits have been used. RS was used to analyse findings and GIS was used to draw maps. The results show that the water sea-level condition of the bay and Miankala lagoon is strongly affected by the fluctuations of the Caspian Sea-Level. Based on the findings of the research, it was found that from 1977-1987, about 123.2 square kilometers, from 1987-1996, 1.51 square kilometers were added to the area of the wetland, which indicates the sea-level rise and erosion in the shore. However, since 1996-2003, 15.6 square kilometers and since 2003-2015, 51.8 square kilometers of sedimentation has occurred. Also, during 2015-2019, 97.1 square kilometers of sedimentation and 0.11 square kilometers of erosion have taken place. Generally, from 1977 to 2019, the amount of aridification and erosion was 164.79 and 175.36 square kilometers, respectively.

Keywords