عنوان مقاله [English]
It changes constantly because of the rising sea level due to natural conditions and the influence of human activities. Therefore, quick and accurate measurements of dynamic coastline changes are of great significance to coastal management, sea level change, environmental protection, and sustainable coastal development. The main purpose of this study is monitoring Caspian Sea coastline changes under the influence of sea level fluctuations during the period 1975-2017. The data and tools used in this research included Landsat satellite imageries MSS, TM, ETM + & OLI, Google Earth, topographic maps fieldworks and ArcGIS & ERDAS IMAGINE, respectively, and the analysis method was analytical-descriptive manner. Results show that shoreline changes are subject to sea level fluctuations and the coasts of the region have suffered extensive damage due to its fluctuation. Between 1996-1975 and 2017-1996, the predominant process was erosion and sedimentation, respectively. The highest amount of erosion in the first period in LC 4 was about 149.9 square kilometers; However, the highest amount of sedimentation in the second period was about 38.79 square kilometers and related to LC 1. On the other hand, the highest and lowest sea level progradation during the period 1975-1996 was about 24,280 meters in LC 4 and about 10 meters in LC 8 & 16, respectively; However, the highest and lowest sea level retrogradation during the period 2017-1996 was about 6,182 meters in the range of LC 1 and about 10 meters in the range of LC 11, respectively.