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Khare, Deepak
- Morphometric Analysis for Prioritization Using Remote Sensing and GIS Techniques in a Hilly Catchment in the State of Uttarakhand, India
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1 Department of Water Resources Development & Management, Indian Institute of Technology, Roorkee-247667 (U.A.), IN
1 Department of Water Resources Development & Management, Indian Institute of Technology, Roorkee-247667 (U.A.), IN
Source
Indian Journal of Science and Technology, Vol 7, No 10 (2014), Pagination: 1650-1662Abstract
Drainage pattern study utilizing Remote Sensing (RS) and Geographical Information System (GIS) has proved to be an efficient and quick tool, nowadays, for water resources planning, conservation and management. In the present study morphological features of 'Bhilanganga' drainage basin are being extracted utilizing satellite imagery and analyzed for assessing the drainage pattern and identifying priority sub-basins for conservation measures as well. The basin morphometric parameters such as linear and aerial aspects were determined and computed using ArcInfo software. The region is a part of Uttarakhand state of India, a hilly catchment in the lower Himalayan range covering an area of 1465.38 km2. The area extends from 30o19'41"N to 30o52'42"N latitude and from 78o29'13"E to 79o2'9"E longitude. The entire area is sub-divided into eight sub-basins ranging in area from 91.91 km2 to 465.29 km2. The pattern of drainage in the area is dendritic to sub-dendritic and the stream ordering ranges from order I to VII. The drainage density indicates a coarser drainage ranging from 1.68 to 2.34 km/km2. The entire area is the normal basin category as observed from the bifurcation ratio. The RS and GIS techniques have proven to be very useful in this case of morphometric analysis, as the study area is a hilly catchment located in a difficult terrain.Keywords
Bhilanganga Sub-basin, Bifurcation Ratio, Drainage Density, Gis, Morphometry, Remote Sensing- Long Term Trend Analysis of Mega Cities in Northern India using Rainfall Data
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Authors
Affiliations
1 Department of Water Resources Development and Management, Indian Institute of Technology, Roorkee, IN
1 Department of Water Resources Development and Management, Indian Institute of Technology, Roorkee, IN
Source
Indian Journal of Science and Technology, Vol 8, No 3 (2015), Pagination: 247-253Abstract
Land use change is occurring rapidly and it has huge impact on the local climate. The study area includes 17 mega cities located within 25°18'00''N to 34°5'24"N of India. The current study is based on trend of historical rainfall which is analyzed by Mann-Kendall method using monthly rainfall data (1901-2011). Before using this method, pre-whitening method was applied for removing the error from the data. Sen's Slope estimator is used to derive the magnitude of the data. Standard Normal Homogeneity Test (SNHT) was used for identifying the break point of the data series. Finally true slope of an existing trend and variance of the residuals was calculated for all selected cities using Sen's method. Increasing trend has been found in Jaipur, Jodhpur, Faridabad, Meerut, Ghaziabad, Delhi, Chandigarh, Ludhiana, Amritsar, Srinagar whereas, Allahabad, Varanasi, Patna, Kanpur, Gwalior, Agra shows decreasing trend. No trend is observed in Kota. Monsoon season depicted decrease in the rainfall magnitude in most of the regions of north India. This result is extremely significant as monsoon rainfall serves the major water demand for agriculture and water resources. Change Percentage for 111 years had shown rainfall variability throughout North India centre's with the highest increase in Delhi centre's (32.43 %) and decrease in Patna centre's (−16.22 %) annually.Keywords
Mann-Kendall, Mega Cities, Pre-Whitening Method, Rate of Change, Standard Normal Homogeneity Test (SNHT).- Expansion of Glacial Lakes in Bhutan during 1990- 2009
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Authors
Affiliations
1 Department of Water Resources Development and Management, Indian Institute of Technology, Roorkee - 247667, Uttarakhand, IN
1 Department of Water Resources Development and Management, Indian Institute of Technology, Roorkee - 247667, Uttarakhand, IN
Source
Indian Journal of Science and Technology, Vol 9, No 36 (2016), Pagination:Abstract
In recent decades, there are notable impacts of climate change on the glacial lakes in the Himalayan region. Therefore, the glacial lakes are expanding due to melting of the glaciers. The current study has been adapted to observe the changing pattern of glacial lakes during 1990 to 2009, which are located in the glacier mountain in Bhutan. The identification of the actual area of the lakes has been done using satellite imagery (Landsat TM and Landsat ETM+) by digitization after application of the correction methods (geometrical and radiometrical) on raw satellite images. The satellite images are utilized for the time periods of 1990, 2001, 2007 and 2009 for this study. The lake volume has been calculated using a glacial lake area and Digital Elevation Model (DEM). Finally, changes in the volume of lakes have been observed from 1990 to 2009. The highest increment of lake volume is found in the Luggye (45%) and Thorthormi (27%), while the lowest is observed in the Thorthormi-4 (1%). Overall, the highest expansion rate of glacial lakes is found in the Thorthormi-1 and Luggye around 0.036 km2/year and the smallest were Thorthormi-2 and Thorthormi-3 around 0.005 km2/year respectively. Higher extent (area and volume) of glacial lakes should be taken care to avoid the damage due to potential bursting.- Analysis of the Quality of Harvested Rainwater from the Top of Roofs in Diverse Materials at Low Temperature
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Authors
Affiliations
1 Department of WRD & M, IIT, Haridwar Highway, Roorkee - 247667,Uttarakhand, IN
2 Department of Civil Engineering, GEU, Clement Town, Dehradun - 248002, Uttarakhand, IN
1 Department of WRD & M, IIT, Haridwar Highway, Roorkee - 247667,Uttarakhand, IN
2 Department of Civil Engineering, GEU, Clement Town, Dehradun - 248002, Uttarakhand, IN