برآورد حجم رسوب ویژه و تعیین حساسیت واحدهای سنگی به فرسایش در حوضه آبخیز سرهه(رودخانه کردان) با روش MPSIAC

محورهای موضوعی : فصلنامه زمین شناسی محیط زیست

شهین بلوطی ¹ (کارشناس ارشد دانشگاه آزاد اسلامی واحد تهران شمال)
پرویز غضنفری ² (استادیار دانشگاه بین المللی امام خمینی(ره))
امین امینی ³ (کارشناس ارشد باشگاه پژوهشگران جوان دانشگاه آزاد اسلامی واحد گچساران)

تاریخ دریافت : 1395/06/17 تاریخ پذیرش : 1395/06/17 تاریخ انتشار : 1390/07/01

کلید واژه: حوزه آبخیز سرهه-فرسایش پذیری-رسوب دهی-حساسیت واحدهای سنگی به فرسایش,

چکیده انگلیسی:

Sorhe basin with area of 36.43 km is located at northeastern of Karaj. Kahar With the age of Pre cambrianformation is also the oldest available stone in this basin and the newer stone units belong to Quaternary period.Stone units in Karaj formation cover more than 50% area of total range. This region is generally consisting ofsediment stones. 6 main factors including geology, climate, tectonic, slope, plant cover and weathering influencethe level of erosion of rock units. In this research the must important effective factor on erosion will be studied.using Arc GIS software , the level of sediment yield map and investigation of formation's erosion at Touchalbasin was specified. Most important factors on erosion in this region are geology, tectonic and slope. based onMPSIAC related tables, maps get be prepared and finally the level of sediment at Sorhe basin will be achieved.Results of tests and studies by GIS certified that stone units of Sorhe basin are classified within 5 erosion groupsin which Quaternary maps had very high erosion and Soltanieh formation had very low sediment. Surfacegeology was the must effective factor on Sorhe basin level of sediment including it was 889/27 at this basin