Quantitative morphometric analysis in the hard rock Hirehalla sub-basin, Bellary and Davanagere Districts, Karnataka, India using RS and GIS

Abstract

Quantitative morphometric analysis of Hirehalla sub-basin has been carried out using GIS and remote sensing techniques which are found to be very useful and powerful tools to compute and decipher different characteristics of the basin and its drainage network. Linear, areal and relief aspects have been computed and evaluated using topographical maps and remote sensing data. Results arrived at through computation of different parameters using GIS capabilities have enabled to understand the characteristics of the drainage network and topographical aspects which have a bearing on the hydrogeology of the sub-basin. The average bifurcation ratio (R b ) is 3.75, which means the drainage sub-basin is not dominated by structural control but geomorphologically controlled. The form factor (F f ) is 0.42 indicating that the sub-basin is more of elongated in shape with dendritic to sub-dendritic drainage pattern. The relief ratio (R r ) is 0.013 depicting the low to moderate relief and slope. All the quantitative morphometric parameters have been computed using standard formulae. Overall GIS-based analysis of all quantitative morphometric parameters suggests that, lithologically, the sub-basin is composed of compact and resistant basement rocks and has low degree of slope thus less prone to erosion. Three of the catchments of the study area are found to have a moderate possibility for the occurrence of flash floods which has a bearing on their groundwater-recharge and thus, their groundwater occurrence and potentiality. These studies are very important and useful for proper planning and management of groundwater resources.

Morfometrik parametreler yardımıyla havzada muhtemel taşkın riskinin tahmin edilmesi: Akçay Havzası örneği

“…Havzanın hem hidrolojik hem de fizyografik gelişimini etkiler. Drenaj ağının gelişiminde hidrolojik ve morfolojik faktörlerin en baskınıdır ve akarsu ara mesafesi ile akarsuyun parçalara ayrılıp incelenme derecesinin bir ölçüsüdür [13].…”

“…Ayrıca havzaların geometrik büyüklükleri incelenerek havzanın drenaj özellikleri ile ilgili çalışmalar da yapılmıştır [7][8][9]. Genel olarak kullanılmakta olan yöntemlerde havzaya ait morfometrik parametreler belirlenerek havzanın morfometrik analizi yapılmakta, böylece hidrolik parametreler ile jeomorfolojik özellikler arasındaki ilişki [10] anlaşılmaya çalışılmaktadır [11][12][13]. Havzanın detaylı morfometrik analizi sayesinde havzanın drenaj ağı ve bu drenaj ağının arazi şekli ve diğer özellikleri üzerindeki etkisinin anlaşılmasında ciddi katkı sağlanmaktadır [13,14].…”

Hydrological inferences through morphometric analysis of lower Kosi river basin of India for water resource management based on remote sensing data

“…Some of the fascinating researches on morphometric evolution using satellite data were also completed by Nautiyal (1994), Srivastava (1997), Nag (1998), Srinivasa et al (2004), Ali et al (2017) and Rai et al (2017b). More recently, Singh et al (2013Singh et al ( , 2014, Sreedevi et al (2005Sreedevi et al ( , 2009Sreedevi et al ( , 2013, Rai et al (2014), Rai et al (2017a, b), Banerjee et al (2015) and Asode et al (2016) have calculated morphometric analysis for Indian rivers using DEM data and GIS.…”

The development and evolution of landform based on neotectonic movement: The Sancha river catchment in the southwestern China

“…Since Neogene period, tectonic movement has changed the coupled process and became the 1 key factor to control the development and evolution of modern landform (Kothyari and Rastogi 2013;Jiang et al 2016;Rana et al 2016). With the recent development of geodetic tools and '3S' techniques, it is possible to facilitate the acquisition of accurate rates in tectonic activity and quantify the development and evolution of landform (Asode et al 2016;Gomez et al 2016). And the research of the neotectonic movement has been unprecedentedly developed.…”