Determining the Extent of Pluvial Lake of Damghan Playa Based on the Lake Terraces in the Quaternary

Document Type : Research Paper


Department of Natural Geography, Faculty of Geography, University of Tehran, Tehran, Iran


Reconstruction of climatic conditions, Holocene climate change, and its tracking mechanism in sedimentological and geomorphological evidence of lakes of different latitudes are among the topics of interest to researchers. This study aimed to investigate the climatic conditions and their impact on the lake area based on morphological evidence (terraces). This research has been done in Damghan Playa, located in Semnan province in the southeast of Damghan city, located in the northern half of the country. In this research, written and statistical data and sources have been used, sedimentation and morphological evidence using various scientific tools and methods, and finally have analyzed the issue comprehensively. After visiting the area for the first time, lake terraces were identified in the area. In the next step, the collected samples were subjected to laboratory analysis, and the lake environment was confirmed. Then, using remote sensing and mapping techniques based on the height of the recorded lake terraces, the lake area levels were determined, and finally, their boundaries were corrected according to other natural factors such as slope, Aspect, drainage pattern, and geological studies. The results show that there are two terrace levels in Damghan Playa, which in the southeastern part of the lake terrace hole are in height with the terraces on the southern slope of the Playa, and the reconstruction of their boundary shows the same garrison. Eventually, findings show that the first level of the lake with a depth of about 22-24 meters. Also, the lake terraces on the southwestern slope of Playa show a lake with a depth of about 14-15 meters in the Quaternary.


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