دراسة الغطاء الثلجي في شمال غرب منطقة تبوك باستخدام مؤشر ( (NDSI بالاعتماد على مرئيات القمر الصناعي لاندسات 8 لعام 2021م

الملخص EN

This study deals with the snow cover in the northwest of Tabuk Administrative Region.

The study relied on data from the Landsat8 satellite images, through the (Normalize deference Snow index), NDSI, through remote sensing.

The study aimed to reveal the type of layer Snow in terms of thickness (depth) through the snow cover index (NDSI) and the detection of the amount of snow area, and the distribution of snow cover in the northwest of Tabuk region on (1/1/2021), and the study relied on the descriptive approach.

The presence of two types of snow layers, a dense layer with a depth of (0,50) per pixel in Alqan and Haleet Ammar, adjacent to the Jordanian borders, Jabal AlLawz, and other scattered sites with a percentage of (6%) of the area of the study area and (12%) of the thin layers of snow in depth It is estimated at (0.30) in pixels.

When referring to the temperatures through the (AccuWeather) website in the Tabuk region on January 31 of the year (2021), it was found that the highest temperature reached (21º) Celsius, while the lowest reached (03º).

Celsius, and this explains the presence of the snow layer, as the low temperatures helped prevent the snow from melting..