Geomorphological and sediment logical study of alluvial fans in wasit region Iraq, with aid of image data

العناوين الأخرى

دارسة جيومورفولوجية و رسوبية للمراوح الغرينية في منطقة واسط- العراق بمساعدة بيانات المرئيات الفضائية

مقدم أطروحة جامعية

al-Husayni, Iqbal Jabir Hasan

مشرف أطروحة جامعية

Ali, Zwain Jawad
al-Khatib, Azhar Ali Ghalib

الجامعة

جامعة بغداد

الكلية

كلية العلوم

القسم الأكاديمي

قسم علوم الأرض

دولة الجامعة

العراق

الدرجة العلمية

دكتوراه

تاريخ الدرجة العلمية

2013

الملخص الإنجليزي

The study area is located in the eastern part of Iraq, and situated within the foothill of Hamreen Mountains and the Mesopotamian Plain regions, and covers about (7.029.55 Km²) between longitude (45⁰ 25 ʹ-46⁰ 35 ʹ) E, and latitude (32⁰ 22ʹ- 33⁰ 33ʹ) N.

The remote sensing techniques are used in order to complete the Geomorphological Map (GEM) of study area at scale 1:250 000 and determine the stages of alluvial fans, depending on Landsat ETM and Quick Bird images with high resolution 0.6 m.

Geomorphological map is produced depending on the visual interpretation of satellite images using anaglyph image; using ERDAS Imagine V.

9.1 and Arc GIS V.

10 software to produce a digital geomorphological map and to determine the stages of alluvial fans.

The geomorphological units in the area of study: units of structural-denudation origin, units of denudation origin, units of fluvial origin and units of aeolian origin.

There are six types of fans in the area, (telescopic, truncated, stacked, the mountain- front, simple and complex), they are reflect the topographic, tectonic and source region.

The streams on the alluvial fans surface are; braided channels, meandering streams, trellis channels and abandoned channels.

The alluvial fans are developed into four stages in Sho-Shereen, Jabal and Badra fans, while the Chabbab fan is developed into five stages.

The development of Sho-Shereen and Badra fans, where the river crosses the old stage then deposits the other stage.

The Jabal fan, the fourth stage growth occurs on the third stage.

The first, second, third and fourth stages of the chabbab fans are coalesen with each other’s forming Bajada, but the fifth stage represents channel fill sediments which is considered the last stage of alluvial fan.

II The slope of Chabbab and Badra fans range (2⁰-5⁰) and extend to large areas, but Sho-Shereen and Jabal fans the slope range (5⁰-15⁰) and extend to small areas.

Alluvial fan deposits are called fan aglomerates, in a proximal areas, the debris of all fans comprise mainly of unsorted clast, the clast supported sediments with maximum clast size ranging from gravel to large boulder.

In the middle and the distal fan areas; fluvial channels occur with sand and fine grained silt and clay.

التخصصات الرئيسية

علوم الأرض و المياه و البيئة

عدد الصفحات

139

قائمة المحتويات

• APA
• MLA
• AMA

لغة النص

الإنجليزية

نوع البيانات

رسائل جامعية

رقم السجل

BIM-609432