changes amount

The spatial identity plan, and the effects that this component has on the analysis of the distribution pattern of natural and human phenomena, and their arrangement, have opened new horizons in the knowledge of geomorphology. In this article relying on drawing techniques, we examine the spatial identity of Lake Ovan in relation to mass movements of materials at a specific level and scale. For this purpose, we reveal the current state of domain movements with the help of offset tracking technique in the images of Sentinel 1 (2014- 2022) with the help of Snap software. Due to the fact that the detection of displacements is done in small parts of the images, we transferred their location data to Excel software to mosaic and surface reveal them together with the data of other parts of the basin in GIS software. According to the amount of changes calculated in the desired time series and their generalization to the topography of the region in the long time, the spatial identity of Ovan Lake was analyzed. Investigation and comparing the amount of total displacement indicates that the ascending images have reflected the total amount of displacements of the Ovan basin less than the descending images (44-7.5 mm), and usually the maximum displacements have been inclined to the upstream of the basin. The maximum displacements in the descending images varied between 1520 and 8.6 mm per year. Field observations confirm the maximum displacement reflected in the descending images.