تحديد و مراقبة معدلات حركة الكثبان الرملية في وسط العراق باستخدام بيانات الاستشعار عن بعد

الملخص EN

Remote sensing data and GIS technology are very important tools for monitoring and controlling sand dunes.

Various data were used, represented by recent images of drones, multiple digital images from Landsat-8, in addition to high spatial resolution satellite images.

Landsat-8 satellite images were used to derive the natural sand index, which was used to monitor the distribution, shape, size and patterns of sand dunes in the study area.

The study revealed that sand movement increased rapidly in the study area during the periods studied, as the movement of sand dunes was from the northwest to the southeast and in the direction of the wind.

The rates of sand movement are different from one site to another, as they ranged (between 40 m to 600 m over six years), and the rate of movement of dunes with the direction of the wind was large compared to other directions.

The shapes of sand dunes varied in the study area, where active and moving crescent-shaped dunes (Barkhan) prevailed, in addition to the presence of other shapes such as the transverse, the sword, and the domes, in addition to the Nabka.