Applied Research in Geographical Sciences

Applied Research in Geographical Sciences

Allometry and morphometry of glacial cirques in Dana highlands

Articles in Press
Authors
Mohammad Reza Rahnama Flavorjani 1
Abdullah Safe 1
Hojjatullah Beiranvand 2
1 University of Isfahan
2 Allameh Tabatabaei University of Education
Abstract
Glacial cirques are considered as an important indicator in tracing the paleoclimate. Accurate identification and morphometric and allometric analyzes of cirques will separate and clean them from other pseudo-cirque symptoms. The purpose of this research; Identification, classification and analysis of morphometric and allometric parameters of glacial cirques of Dana heights in Kohkiloye and Boyer Ahmad provinces. After identifying 27 glacial sub-basins, 77 glacial cirques were identified in the region and were drawn on the classified slope map in two formats, linear and polygonal. The operation of classifying circuses was carried out based on the methods of Wilburg and Rodberg, Evans and Cooks. For the morphometry of these cirques, parameters such as (L), (W), (H), (L/W), (L/H), (W/H) and the size of the cirque were used and its morphometric characteristics. has been checked. According to the research results, there are 37 N1 category circuses, 15 N2 category circuses, 20 N3 category circuses, and 5 N4 category circuses in these heights. The coefficient b on the longitudinal and transverse axes of N3, N2, and N1 categories is greater than one. As a result, allometric and isometric behavior in these altitudes is positive for circuses of this category. Also, the average coefficient b on the longitudinal axis of N4 category circuses and the average coefficient a on the transverse axis of circuses of this category is less than 1. As a result, in these irregularities, the coefficient is B>1 and A<1 for both. As a result, the allometric and isometric behavior in these altitudes is negative for N4 category cirques.
Keywords
allometry
morphometry
glacial cirques
glacial territories
Dana heights
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Applied Research in Geographical Sciences

Articles in Press, Accepted Manuscript
Available Online from 21 March 2007