نوع المستند : المقالة الأصلية
المؤلفون
1 أستاذ الجغرافيا الطبيعية، قسم الجغرافيا ونظم المعلومات الجغرافية - كلية الآداب- جامعة عين شمس
2 قسم الجغرافيا ونظم المعلومات الجغرافية - کلية الآداب - جامعة عين شمس
3 باحث دكتوراة بقسم الجغرافيا ونظم المعلومات الجغرافية - كلية الآداب- جامعة عين شمس
المستخلص
الكلمات الرئيسية
الموضوعات الرئيسية
عنوان المقالة [English]
المؤلفون [English]
Dune movements are a geomorphological hazards that affects all human activities, especially economic activities represented by the destruction of roads, railway tracks and agricultural lands. The current study aims to use spatial techniques to monitor and predict the movement of sand dunes in the Kharga Depression-Egypt for four barchan dunes. The study based mainly on detailed land survey, satellite images extracted from Google Earth Pro with high resolution (0.5 metres) and GIS. The study dealt with a calibration and evaluation process to study the movement of sand dunes using high-resolution satellite images compared to land surveying using total station and GNSS. The study showed that the confidence factor between the outputs of the two methods is 85%.
Prediction of the future barchans movement was carried out using GIS spatial model based on the land survey and satellite images during the period between February 6, 2018 and November 6, 2019.
The study concluded that the total expected movement of the sand dunes ranged between 420 - 982 meters in 2030, and between 969 - 2278 meters in 2050, which poses a threat to the major roads, of which the most important is the Assiut-Kharga high way, and agricultural and residential areas in the Kharga and its surrounding areas.
الكلمات الرئيسية [English]
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