Abstract
Natural or man‐made disasters are dreadful incidents that devastate lives, disturb the socioeconomic and socio-political structure of a society and preserve or erase developments and gains
based on decades, within few minutes. A catastrophe has the capacity to affect existing general
population to their base, parting an occasion for self-investigation and reassessment of their
framework and composition. This study signifies the Radar Digital Elevation Model centered
pattern of drainage network to appraise the catastrophic landslide events due to the 2005
earthquake in Neelum-Jhelum Valley in SE-Indus Kohistan Zone north of Pakistan. This
investigation highlights zones affected by the earthquake and vulnerable to landslides by utilizing
Hypsometric integrals (HI values) and Hack SL-gradient techniques that are proficient in
detecting erosion, land mass and tectonic movements. Dataset principally includes “Shuttle Radar
Topography Mission (SRTM)” Digital Elevation Model having pixel resolution of 90 meters.
Hypsometric investigation brings evidence related to the deformation periods of a geographical
stage. To accomplish this objective, D8 method was used, 355 subbasins of 4th Strahler order,
from 5th Strahler order 75 subbasins and from 6th Strahler order 15 subbasins were delineated.
To appraise the indentations of erosional scarps, Hypsometric curves (HC) and Hypsometric
integrals (HI) for all distinct subbasins were computed. Variable topographic elevations
(Maximun, minimum and mean) were determined to decipher the HI values. The HCs are
characterized as convex up, S shaped and concave down curves. Curvature of convex up
symbolizes a lesser amount of eroded or deformed subbasins (comparatively young geography),
and are located in conjunction of the North-Eastern anticline side of the Muzaffarabad that
indicates the tectonic behavior of HKS, however S-shaped curvatures denote the transitional
stage between the convex up and concave down deformational stage. The curvatures of concave
down represents extreme deformation phase and are located west and eastern side of HKS.
Javed Sami , Syed Amer Mahmood, S. M. H. Raza, Shahid Ghazi. (2018) Socio – Political Context and Inferences from Remote Sensing in South Asia: A Study of Tectonic Induced Surface Deformation in SE-IKSZ , South Asian Studies, Volume 33, Issue 2.
-
Views
987 -
Downloads
97
