Novel Technique to Investigate Glacio-fluvial Hypsometry in Hunza Using Local Indicator of Spatial Autocorrelation (LISA)-Reference-Cited by-同舟云学术

Novel Technique to Investigate Glacio-fluvial Hypsometry in Hunza Using Local Indicator of Spatial Autocorrelation (LISA)

Published:2021-06-09 Issue:2 Volume:3 Page:73-85
ISSN:2618-1630
Container-title:Vol 3 Issue 2
language:en
Short-container-title:IJIST

Author:

Mahmood Syed Amer¹,Hassan Sarah²,Arif Hania¹,Batool Saira²,Amer Areeba³,Shahazad Muhammad⁴,Aslam Rana Muhammad Sohail¹,Talib Bushra⁵

Affiliation:

1. Department of Space Science, University of the Punjab, Lahore

2. Centre For Integrated Mountain Research (CIMR) University of the Punjab Lahore

3. Wuhan University China .

4. Department of Computer Science (PUCIT), University of Punjab

5. Department of Technology & engineering, University of the Lahore

Abstract

Hypsometric Integral (HI) displays the effect of active tectonics and sensitivity on geomorphic structures. In this study we calculated HI values for Hunza valley to investigate neotectonics, development of topographic structures and process of erosion using SRTM DEM 90m. ArcGIS and MATLAB is used to generate HI and hypsometric curve (HC). We generated HI and HC values by using D8 algorithm in MATLAB to extract drainage basins for 5 and 6 Strahler orders. HI and HC values show the stages of erosion for instance high values of HI and convex HC displays young and tectonically active stage. We used different grid sizes in ArcGIS to calculate maximum, mean and minimum elevation utilizing different statistical techniques. We used Local Indicator of Spatial Autocorrelation (LISA) instead of Global Moran Index to determine the extent of distribution of clustered, dispersed and randomized HI values. This technique indicates high positive z score for auto correlated data. Regions with high HI value indicate relative uplift, undissected and young structures while low HI values indicate sediment accumulation and shallow earthquakes.

Publisher

50Sea

Subject

Computer Networks and Communications,Hardware and Architecture,Software

Reference23 articles.

1. Eyles, N. and Scheidegger, A. E. ‘Environmental signiﬁcance of bedrock jointing in Southern Ontario, Canada’. Environmental Geology, vol. 26, pp: 269–77, 1995.

2. Eyles, N., Arnaud, E., Scheidegger, A. E., and Eyles, C. H. ‘Bedrock jointing and geomorphology in southwestern Ontario, Canada: an example of tectonic predesign’. Geomorphology, vol.19, pp: 17–34, 1997.

3. Anselin, L. ‘Local indicators of spatial association—LISA’. Geographical Analysis, vol. 27, issue no. 2. Pp: 93-115, 1995.

4. Chen, Y. C., Sung, Q., and Cheng, K. Y. ( 2003) ‘Along-Strike Variations of Morphotectonics Features in the Western Foothills of Taiwan: Tectonic Implications Based on Stream-Gradient and Hypsometric Analysis’ Geomorphology, vol. 56, issue no. 1-2, pp: 109-137, 2003.

5. Twidale, C. R. & Campbell, E. M. Australian Landforms: Understanding a Low, Flat, Arid and Old Landscape. Kenthurst, New South Wales: Rosenberg Publishing, 2005.