An analysis of Caspian lake water level fluctuations and coastal management scenarios (a case study of the central area of the Caspian coast (Amirayad port)

Changing the water level is one of the phenomena that happens in open waters and lakes. The Caspian Sea is considered a very important region due to its strategic and geographical location. The studied area is in the area of Amirabad port in the north of Neka city. The high and rapid variability of the Caspian Sea has economic, social, political and environmental effects. The aim of this study is to understand the climatic changes on the Caspian Sea level fluctuations. Using the library method (descriptive) - analysis is the study method of this research. Fluctuations in the level of the Caspian Sea are considered one of the most important natural events in this basin. Examining the statistics of the water level of the Caspian Sea in 1900 AD shows the changes of the water level of the sea in the form of retrogressive and progressive phases. Fluctuations in the Caspian water level in the historical period show that the cycle follows gradual events. The highest frequency of heights, especially in the last 700 years, was above (-26) meters. The variability of the water balance of the Caspian Sea at different times and water level fluctuations is primarily caused by the change in the volume of runoff entering the sea. The increasing period of the Caspian Sea water level during the year usually starts from early spring and continues until mid-summer, and this time is completely compatible with the flood periods of influential rivers such as the Volga. Due to the construction of port facilities, the coasts of Amirabad region are out of equilibrium and stability, and sedimentation and erosion can be seen in the upstream (western side) and downstream (eastern side) coasts, respectively. Amirabad port ranked 1st in terms of access to rail and air transportation lines and ranked 2nd in terms of identifying categories of environmental pollution and ranked 3rd in terms of habitat destruction and loss of biodiversity according to experts in priority to improve performance. took In order to improve the sustainable performance of Mir Abad port, it is suggested to the managers of this port to pay more attention to the index of access to air transport lines





abstract

An analysis of Caspian lake water level fluctuations and coastal management scenarios (a case study of the central area of the Caspian coast (Amirayad port)

Changing the water level is one of the phenomena that happens in open waters and lakes. The Caspian Sea is considered a very important region due to its strategic and geographical location. The studied area is in the area of Amirabad port in the north of Neka city. The high and rapid variability of the Caspian Sea has economic, social, political and environmental effects. The aim of this study is to understand the climatic changes on the Caspian Sea level fluctuations. Using the library method (descriptive) - analysis is the study method of this research. Fluctuations in the level of the Caspian Sea are considered one of the most important natural events in this basin. Examining the statistics of the water level of the Caspian Sea in 1900 AD shows the changes of the water level of the sea in the form of retrogressive and progressive phases. Fluctuations in the Caspian water level in the historical period show that the cycle follows gradual events. The highest frequency of heights, especially in the last 700 years, was above (-26) meters. The variability of the water balance of the Caspian Sea at different times and water level fluctuations is primarily caused by the change in the volume of runoff entering the sea. The increasing period of the Caspian Sea water level during the year usually starts from early spring and continues until mid-summer, and this time is completely compatible with the flood periods of influential rivers such as the Volga. Due to the construction of port facilities, the coasts of Amirabad region are out of equilibrium and stability, and sedimentation and erosion can be seen in the upstream (western side) and downstream (eastern side) coasts, respectively. Amirabad port ranked 1st in terms of access to rail and air transportation lines and ranked 2nd in terms of identifying categories of environmental pollution and ranked 3rd in terms of habitat destruction and loss of biodiversity according to experts in priority to improve performance. took In order to improve the sustainable performance of Mir Abad port, it is suggested to the managers of this port to pay more attention to the index of access to air transport lines.