جيومورفولوجية مروحة دويريج الفيضية باستخدام نظم المعلومات الجغرافية GIS والاستشعار عن بعد RS == Geomorphology Of Diwearege Alluvial Fan By Using Remote Sensing (RS) And Geographical Information Systems (GIS)
Author name:
علي طالب حمزة الطائي
Supervisor name:
محمد عبد الوهاب حسن الاسدي
General topic:
Geography
Specific topic:
Natural Geography
Degree:
Master
University:
University Of Basrah - College Of Literature - Department Of Geography
Language:
Arabic
University location:
Basrah
First pages:
10T1408 - p.pdf
Abstract:
The fans flooded one of spreading shapes that formed as a result of the availability of several factors, including tectonic, climate, topography, hydrology, and represents the fan one of these shapes formed in the southeastern part of Iraq, at the feet of the Iranian hills, and occupied space (1608.74) km2 and are all located inside the Iraqi border and within the province of Maysan, either her pelvis area reached (3582.87)km2 and the Association located within the Iranian border. A stronomicall Diwearege fan located between latitudes (31°40,56 - 32°10.41) north and the to the longitudes (47?18.15 - 47?51.39) east. The study aims to find out the main geomorphological and hydrological characteristics in the fan alluvial configurations, as well as to detect and track the inception stages of formation and evolution, through the study of their properties spreading, in addition to studying the water basin, which represents the main source of deposits. The use of geographic information systems (GIS) and remote sensing (RS) in the interpretation and analysis of visual and satellite digital elevation model (DEM). To get maps and geological structures of sin and maps of the surface, including the slope and direction and morphometric maps of water basins and land cover classification. And that helped to draw a geomorphological map of the fan. Through the relationship between the factors and processes geomorphological problem of the appearance of the ground and geomorphological units associated with them.The study found that the tectonic factor in the role originated fan where study area is located between two unstable tectonic. As well as the role of climate change in the growth and development of the fan, where grown and developed fan on the basis of four stages was during the era of Albulallostosen, as well as the worker hydrological and goal Basin propeller role in the growth and development of the fan through what moves them from the sediment through the rain periods, as well as the role of the worker hydrological in the evolution of the fan through the course of the river has changed and thus increase the fan area and change the geometry of her, as well as its role in increasing the thickness of the fan through the distribution of secondary points deposition on the surface of the fan, especially in parts of the lower ones.It turns out that the geomorphological processes active role on the roof of the fan and a private water erosion, as characterized by three types of erosion are Sheet and Rill and Gullies and this is due to the floods that have hit the fan.The study found that there are four varieties of shapes geomorphological on the surface of the fan, and that most of these forms the rule is problematic with watery origin precipitation, but the problem with the water origin erosion.It was found by classifying land cover fan Diwearege that there are six categories, namely, (barren land, covers are salinizaion, water cover, vegetation, bogs, agricultural land). An evaluation of the fan in accordance with the appropriate and reactivity ground it includes four varieties of appropriate as well as four levels of the earth's susceptibility which is almost identical with Aedha and that most of these categories are valid to agricultural investment and found during the study that the fan is exposed to various degrees of environmental risk, especially floods which are exposed in wet seasons.Especially the lower parts of the fan.Show that can be harvested sources on the surface of Ruha to control floods and to take advantage of this water in agriculture and various purposes. The study conclusions and recommendations and a list of sources and Savior in English concluded.
