كليدواژه :
ﺗﮑﺘﻮﻧﯿﮏ , ﺷﺎﺧﺺﻫﺎي ژﺋﻮﻣﻮرﻓﯿﮏ , ﮔﺴﻞ , ﺷﺒﮑﻪ زﻫﮑﺸﯽ
چكيده فارسي :
اﻧﺪازهﮔﯿﺮيﻫﺎي ﮐﻤﯽ ﺑﻪ ژﺋﻮﻣﻮرﻓﻮﻟﻮژﯾﺴﺖﻫﺎ اﺟﺎزه ﻣﯽدﻫﺪ ﺗﺎ ﺑﻪ ﻃﻮر واﻗﻌﯽ و ﻣﻌﻘﻮل ﻟﻨﺪﻓﺮم ﻫﺎي ﻣﺨﺘﻠﻒ را ﺑﺎ ﯾﮑﺪﯾﮕﺮ ﻣﻘﺎﯾﺴـﻪ ﮐﺮده و ﺷﺎﺧﺺﻫﺎي ﻣﻮرﻓﻮﻟﻮژﯾﮏ را ﻣﺤﺎﺳﺒﻪ ﮐﻨﻨﺪ. اﯾﻦ اﻣﺮ در ﺗﺸﺨﯿﺺ و ﺗﻮﺻﯿﻒ ﺧـﺎص ﻧﺎﺣﯿـﻪ اي ﺑــﻪ ﻋﻨــﻮان ﻣﺜـ ﺎل ﻣﯿـ ﺰان ﻓﻌﺎﻟﯿﺖ ﺗﮑﺘﻮﻧﯿﮑﯽ ﻣﻔﯿﺪ ﻣﯽﺑﺎﺷﺪ. رودﺧﺎﻧــﻪﻫــﺎ و ﺷــﺒﮑﻪ زﻫﮑﺸـــﯽ از ﺟﻤﻠـــﻪ ﻣﻬـــﻢ ﺗـــﺮﯾﻦ ﻋﻮارﺿـــﯽ ﻫﺴـــﺘﻨﺪ ﮐـــﻪ ﻧﺴــﺒﺖ ﺑــﻪ ﺗﻐﯿﯿــﺮات ﺗﮑﺘﻮﻧﯿﮑﯽ ﺑﺴـﯿﺎر ﺣﺴـﺎس ﻣـﯽﺑﺎﺷـﻨﺪ. ﻫﺪف از اﯾﻦ ﭘﮋوﻫﺶ ﺑﺮرﺳﯽ ﺗﮑﺘﻮﻧﯿﮏ ﻓﻌﺎل ﺣﻮﺿﻪ آﺑﺮﯾﺰ داﻟﮑﯽ ﺑﺎ اﺳﺘﻔﺎده از ﺷﺎﺧﺺﻫﺎي ژﺋﻮﻣﻮرﻓﯿﮏ ﻣﯽﺑﺎﺷﺪ. ﺑﺪﯾﻦ ﻣﻨﻈﻮر ﺑﺎ ﺑﺮرﺳﯽ ﻣﻄﺎﻟﻌﺎت ﭘﯿﺸﯿﻦ از ﺷﺶ ﺷـﺎﺧﺺ ﻧﺴـﺒﺖ ﺷـﮑﻞ ﺣﻮﺿـﻪ زﻫﮑﺸﯽ Bs ، اﻧﺘﮕﺮال ﻫﯿﭙﺴﻮﻣﺘﺮي Hi ، ﺗﻘﺎرن ﺗﻮﭘﻮﮔﺮاﻓﯽ ﻋﺮﺿﯽ T ، ﻓﺮازﻧﻤﺎI ، ﺷﺎﺧﺺ ﺗـﺮاﮐﻢ زﻫﮑﺸـ ﯽ D وﮔﺮادﯾـ ﺎن ﻃـ ﻮل رودﺧﺎﻧﻪ SL ﮐﻪ ﺑﯿﺸﺘﺮ ﮐﺎرﺑﺮد داﺷﺘﻪ اﺳﺖ، اﺳﺘﻔﺎده ﺷﺪه اﺳﺖ. ﺑﻪ اﯾﻦ ﻣﻨﻈﻮر ، اﺑﺘﺪا ﻻﯾـ ﻪﻫـﺎي اﻃﻼﻋـﺎ ﺗﯽ ﻧﻘﺸـﻪ ﻫـﺎي ﺗﻮﭘـﻮﮔﺮاﻓ ﯽ 1:25000 ﺑﻪ ﺳﯿﺴﺘﻢ اﻃﻼﻋﺎﺗﯽ GISدر ﻣﺤﯿﻂ GIS 10.2 اﻧﺘﻘﺎل داده ﺷﺪه و ﺑﺎ اﺳﺘﻔﺎده از آن ﻻﯾﻪ ﻫﺎﯾﯽ ﻣﺎﻧﻨﺪ ﺷـﺒﮑﻪ زﻫﮑﺸـ ﯽ، ﺷﯿﺐ، ﻣﺪل رﻗﻮﻣﯽارﺗﻔﺎع و TIN اﺳﺘﺨﺮاج ﮔﺮدﯾﺪ و ﺑﺎ اﺳﺘﻔﺎده از ﻧﻘﺸﻪ زﻣﯿﻦﺷﻨﺎﺳﯽ ﻣﻨﻄﻘﻪ، ﻻﯾﻪﻫﺎي ﺧﻄﯽ ﮔﺴﻞﻫﺎ و ﺳـﺎزﻧﺪﻫﺎي ﺗﺸﮑﯿﻞ دﻫﻨﺪه ﺑﺴﺘﺮ رودﺧﺎﻧﻪ ﻣﻮرد ﻣﻄﺎﻟﻌﻪ اﺳﺘﺨﺮاج و ﺑﻪ ﻻﯾﻪ ﻫﺎي ﻓﻮق اﺿﺎﻓﻪ ﮔﺮدﯾﺪ. ﭘﺲ از ﻣﺤﺎﺳﺒﻪ ﺷـﺎﺧﺺ ﻫـﺎ ي ژﺋﻮﻣﺮﻓﯿـ ﮏ در ﻣﻨﻄﻘﻪ و ﺑﺮآورد ﺷﺎﺧﺺ Iat ﻣﯿﺰان ﻧﺴﺒﯽ ﺗﮑﺘﻮﻧﯿﮏ ﻓﻌﺎل در زﯾﺮﺣﻮﺿﻪﻫﺎي ﻣﻮرد ﻣﻄﺎﻟﻌﻪ ﻣﺸﺨﺺ ﺷـﺪ . ﻧﺘـﺎﯾﺞ ﺗﺤﻘ ﯿـﻖ ﻧﺸـﺎن ﻣﯽدﻫﺪ ارﻗﺎم ﺣﺎﺻﻞ از ﺑﮑﺎرﮔﯿﺮي ﺷﺎﺧﺺ ﻫﺎي ﻣﺨﺘﻠـﻒ ﻧﯿـﺰ ﻧـﺸﺎن دﻫﻨــﺪه ﻓﻌــﺎل ﺑـﻮدن ﺗﮑﺘﻮﻧﯿـﮏ در ﺑﺨـﺶ ﻫـﺎي ﻣﺨﺘﻠـﻒ ﺣﻮﺿﻪ، ﺑﻮﯾﮋه در ﺑﺨﺶﻫﺎي ﺷﻤﺎﻟﯽ وﺟﻨﻮﺑﯽ آن اﺳﺖ.
چكيده لاتين :
Quantitative measurements allow geomorphologists to compare genuinely and reasonably different landforms and compute morphological indices. This is useful in regionally identifying and describing, for example, tectonic activity. Rivers and drainage networks are one of the most important complications that are very sensitive to tectonic variations. The purpose of this study is to investigate the active tectonics of the Dalaki catchment area using geomorphic indices. In this baseline, six indicators of Bs drainage basin, Hyssometric integral Hi, T transverse T-axis symmetry, I-factor, D-drainage index, and SL-Lagardian length are used. In the study of the relationship between tectonics and morphometry in the studied basin, topographic, geological, topographic maps, geology, meteorology, hydrology, satellite imagery from trustees were prepared and after necessary processing for the research purposes Has been used. The results of the study show that the shape of the semi-arid and semi-symmetrical topographic symmetry is high, but the disturbances in the longitudinal profile of the river are high due to different lithology units and numerous fault structures. According to the survey on accurate data, the displacements that caused the fault are only visible on the Gurpi Formation. In this way, the aggregate data and ground evidence in the aquifer basin is semi-active in terms of the dynamics of the internal forces of the earth.
