Anju Panwar - Academia.edu (original) (raw)

Papers by Anju Panwar

Himalaya has one of the largest resources of snow and ice, which act as a freshwater reservoir fo... more Himalaya has one of the largest resources of snow and ice, which act as a freshwater reservoir for all the rivers originating from it. Monitoring of these resources is important for the assessment of availability of water in Himalayan rivers. Therefore a study was taken up with the objective to monitor snow cover in the sub-basins of Ganga. Snow cover was monitored for Yamuna basins for beginning from 2003 by using the algorithm based on Normalized Difference Snow Index. These basins are selected on the basis of different climatic zones. The snow accumulation and ablations curves are different for each basin, depending upon climatologically sensitive zones and altitude distribution of the basin. NDSI Algorithm was used to generate snow cover products in every five and ten daily intervals. The present result gives the current status of Snow cover area of five and ten daily products. The AWiFS data of Resourcesat satellite was analyzed to estimate snow extent. The snow cover was monit...

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019

Management could be improved through the use of current technologies including Remote Sensing and... more Management could be improved through the use of current technologies including Remote Sensing and Geographic Information System (GIS).The present study was carried out to identify the potential agriculture sites in the Yamuna basin of Uttarkashi district of Uttarakhand .The characterization of natural resources of Yamuna basin of Uttarkashi district was undertaken using satellite imagery (Sentinel-2, LISS IV, LISS III, Aster DEM (30 m) and Survey of India Toposheet to generate several layers of maps such as Watershed Boundaries,Drainage, Soils, Land use and Land cover, Geology, Geomorphology, Lithology,Ground water, Slope and Aspect using Geographic Information System .The most influencing parameters of each layer were chosen based on literature and operational methodologies and they were extensively studied while taking in to consideration their role in determination of potential agriculture sites. Accordingly they were assigned definite weight in order to characterize the sites on basis of their potential Agriculture/Irrigation site values. Individual resources information was integrated in the GIS environment with the help of the weighted sum method to identify potential irrigation sites.Quantile classification was used to get more refined result. Census data sate agriculture department and irrigation department were used to verify the outcomes of result.

Conservation of soil and land in hilly region is an expensive and critical process. This conserva... more Conservation of soil and land in hilly region is an expensive and critical process. This conservation measures need various steps starting from the identification of most vulnerable and erosion prone region. The identification and appropriate treatment measure will also help in formulation of integrated water resource management programme for sustainable development. Uttarakhand State is one of the important area where such information can be utilized. Takoli watershed is one of the important watershed of Tehri district Uttarakhand. The main objective of the present study is to determine the vulnerability of catchment to erosion for further prioritization of Takoli watershed. For the present study IRS P6 Satellite images of LISS III sensors is used to assess land use/land cover and vegetation indices by applying NDVI technique, while a GIS system is used to evaluate the topographical condition. For assessing the relative vulnerability of different watershed to soil erosion the factors responsible for soil erosion were considered using the Watershed Erosion Response Model (WERM). This is an index-based approach, based on the surface factors mainly responsible for soil erosion. The integrated effect of all the parameters is evaluated by applying weighted overlay technique of GIS to find different areas vulnerable to soil erosion. The analysis reveals that about 11.48 % area is most susceptible to soil erosion. Based on the integrated index, a priority rating of the watersheds for soil conservation planning is recommended for watershed development and management.

Remote Sensing and GIS recently had been extensively used in various spatial analyses for differe... more Remote Sensing and GIS recently had been extensively used in various spatial analyses for different parameters to understand the spatial characteristic to be used in decision making. Remote sensing and GIS provides us with various tools to be used in spatial analysis and one of the most important tools of these is Hydrological tool (Arc-hydro in ArcGIS). Hydrological tools had been used to understand the terrain of the surface and eventually the hydrological characteristics of the given area. In this study a comparative study had been carried out on drainage density using Digital elevation data of different sources that is SRTM with 90 meter resolution and Aster data with 30 meter resolution using the Arc-hydro tool of GIS. Study area is selected from Yamuna middle watershed of Uttarkashi District, Uttarakhand, India which provides a much variation in terrain condition including the elevation and is hard to access most of its areas. DEM has been processed separately for that of SRTM...

International Journal of Advanced Remote Sensing and GIS, 2017

This area looks at glacier area change in Chorabari Sub Watershed for 1962-1990 and 2000-2016 per... more This area looks at glacier area change in Chorabari Sub Watershed for 1962-1990 and 2000-2016 periods. Study area of Chorabari Sub Watershed extends between the latitudes of 28º-31ºN to longitudes 77º-81°E. Chorabari Sub Watershed is the part of Mandakini basin and it has total number of 40 glaciers covered an area of 81.64 km 2 with the ice reserve of 5.9856 km 2. The reduction in the glacier area has been observed on the lateral side of Chorabari glacier and not on the snout position. Overall reduction in the basin glacier area was observed 1.23 km 2 during the year 1990 to 2016. In addition, this paper describes a method for estimating the ice surface elevation changes using the SRTM (2000) and elevation data generated from topographic maps (1962) to quantify the ice thickness change for the 1962-2000 periods.

The Surana Tons watershed is one of the foremost water courses flowing in Doon valley in central ... more The Surana Tons watershed is one of the foremost water courses flowing in Doon valley in central part of dehradun. The watershed is divided in to 10 sub watershed Surana Tons/ Rami Rao ,Surana Tona/Biras Rao, Surana Tona/Nimi Nadi, Surana Tona/Nanota Nadi, Surana Tona/Jajhara, Surana Tona/Surana Nadi, Surana Tona/Bains Wala Rao, Surana Tona/Nun Nadi, Surana Tona/Karwa Pani, Surana Tona/Ramgarh.The morphometric paramentrs of surana tons watershed were measured using remote sensing and GIS technique and the quantitative analysis of watershed development of the watershed and its 10 sub watershed was carried out using LISS III, Landsat ASTER ( DEM) data and survey of India Toposheets. The Drainage orientation data suggest a poly modal circulation. The shape of a watershed is somewhat proportioned having high, moderate slope to low slope , dendrite pattern ,high values of drainage density ,stream frequency and bifurcation ratio. The bifurcation ratio and high drainage density indicate li...

The use of the capabilities of spatial technology in the decision making and other planning proce... more The use of the capabilities of spatial technology in the decision making and other planning processes requires a large amount of Geo-spatial database and a proper channel for accessing, sharing, displaying and easily processing and editing of this large amount of spatial data. Free open source web GIS system which includes Geo-server which is a web GIS server and PostgreSQL/PostGIS as an object oriented relational database management system (ORDBMS) for effective dissemination, sharing and management of spatial information over the internet had proved to be time and cost effective in the sharing of the geo-database. Web GIS can easily use for displaying of spatial information over the world and can be accessed by the any user over the internet. Graphical user interface is needed for this kind of application so that it is suitable for the user to look over their interested place with the single mouse click. These free open source software and servers can be effectively used in web-GI...

Groundwater is not only an important component of the hydrological cycle but also the most import... more Groundwater is not only an important component of the hydrological cycle but also the most important source of water for drinking, domestic, industrial and agricultural uses. The present work is aimed at assessing the water quality index (WQI) for the groundwater of Doiwala block of Doon valley. This has been determined by collecting legacy data from concerned organization.For calculating the WQI, the following 11 parametershave been considered: pH, total hardness, calcium, magnesium, chloride, nitrate, sulphate, total dissolved solids, iron, manganese and fluorides.The WQI for these samples ranges from 30 to 330. The high value ofWQI has been found to be mainly from the higher values of iron, nitrate, totaldissolved solids, hardness, fluorides, bicarbonate and manganese in the groundwater. The results of analyses have been used to suggest models for predicting water quality.

The changes in climate variability have led to a rapid retreat of mountain glacier systems which ... more The changes in climate variability have led to a rapid retreat of mountain glacier systems which are considered the lifeline of river basins and ecosystems. Scientific studies have shown that 67 % of glaciers are retreating at a startling rate in the Himalayas as a result of various factors including climate change. Glaciers and small ice caps in temperate environments are sensitive indicators of the change in climate. Satopanth and Bhagirath Kharak glaciers are located at the head of the Alaknanda valley in Chamoli District. Retreat of the snouts and area vacated by recession of the glaciers were estimated for 51 years by way of superimposing the Survey of India Toposheets of 1962 on the map .Snouts of the Satopanth and Bhagirath Kharak glaciers recorded continuous recession for the past five decades, with decline in recession of both cases. The retreat rate of Satopanth glacier is 2.88 m/year while Bagirathi Kharak retreat at a rate of 1.21 m/year which is much more less in comparison to Satopanth glacier. Retreat in the length of Satopanth and Bagirathi Kharak glacier was 2.28km and 0.66 km respectively from the period (1962-2013). The total area vacated by the Satopanth and Bhagirath Kharak glaciers during 51years was (0.354 sq. km) and (0.14 sq. km) respectively. This paper presents the results obtained from the analysis from the set of multitemporal satellite data,

International Journal of Advanced Remote Sensing and GIS, 2015

Sustainable management of water resources involves reserve upholding, proficient utilization, and... more Sustainable management of water resources involves reserve upholding, proficient utilization, and eminence management. Although, activities relating to quantity appraisal and management in terms of river discharge and water resources planning are given attention at the basin level, water quality assessment are still being done at specific locations of major concern. The greatest compensation of using remote sensing data for hydrological investigations and monitoring is its ability to generate information in spatial and temporal domain, which is very crucial for booming scrutiny. The GIS technology provides suitable alternatives for proficient supervision of large and intricate databases. Information from satellites is becoming more and more important for natural resources management and research.

Himalaya has one of the largest resources of snow and ice, which act as a freshwater reservoir fo... more Himalaya has one of the largest resources of snow and ice, which act as a freshwater reservoir for all the rivers originating from it. Monitoring of these resources is important for the assessment of availability of water in Himalayan rivers. Therefore a study was taken up with the objective to monitor snow cover in the sub-basins of Ganga. Snow cover was monitored for Yamuna basins for beginning from 2003 by using the algorithm based on Normalized Difference Snow Index. These basins are selected on the basis of different climatic zones. The snow accumulation and ablations curves are different for each basin, depending upon climatologically sensitive zones and altitude distribution of the basin. NDSI Algorithm was used to generate snow cover products in every five and ten daily intervals. The present result gives the current status of Snow cover area of five and ten daily products. The AWiFS data of Resourcesat satellite was analyzed to estimate snow extent. The snow cover was monit...

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019

Management could be improved through the use of current technologies including Remote Sensing and... more Management could be improved through the use of current technologies including Remote Sensing and Geographic Information System (GIS).The present study was carried out to identify the potential agriculture sites in the Yamuna basin of Uttarkashi district of Uttarakhand .The characterization of natural resources of Yamuna basin of Uttarkashi district was undertaken using satellite imagery (Sentinel-2, LISS IV, LISS III, Aster DEM (30 m) and Survey of India Toposheet to generate several layers of maps such as Watershed Boundaries,Drainage, Soils, Land use and Land cover, Geology, Geomorphology, Lithology,Ground water, Slope and Aspect using Geographic Information System .The most influencing parameters of each layer were chosen based on literature and operational methodologies and they were extensively studied while taking in to consideration their role in determination of potential agriculture sites. Accordingly they were assigned definite weight in order to characterize the sites on basis of their potential Agriculture/Irrigation site values. Individual resources information was integrated in the GIS environment with the help of the weighted sum method to identify potential irrigation sites.Quantile classification was used to get more refined result. Census data sate agriculture department and irrigation department were used to verify the outcomes of result.

Conservation of soil and land in hilly region is an expensive and critical process. This conserva... more Conservation of soil and land in hilly region is an expensive and critical process. This conservation measures need various steps starting from the identification of most vulnerable and erosion prone region. The identification and appropriate treatment measure will also help in formulation of integrated water resource management programme for sustainable development. Uttarakhand State is one of the important area where such information can be utilized. Takoli watershed is one of the important watershed of Tehri district Uttarakhand. The main objective of the present study is to determine the vulnerability of catchment to erosion for further prioritization of Takoli watershed. For the present study IRS P6 Satellite images of LISS III sensors is used to assess land use/land cover and vegetation indices by applying NDVI technique, while a GIS system is used to evaluate the topographical condition. For assessing the relative vulnerability of different watershed to soil erosion the factors responsible for soil erosion were considered using the Watershed Erosion Response Model (WERM). This is an index-based approach, based on the surface factors mainly responsible for soil erosion. The integrated effect of all the parameters is evaluated by applying weighted overlay technique of GIS to find different areas vulnerable to soil erosion. The analysis reveals that about 11.48 % area is most susceptible to soil erosion. Based on the integrated index, a priority rating of the watersheds for soil conservation planning is recommended for watershed development and management.

Remote Sensing and GIS recently had been extensively used in various spatial analyses for differe... more Remote Sensing and GIS recently had been extensively used in various spatial analyses for different parameters to understand the spatial characteristic to be used in decision making. Remote sensing and GIS provides us with various tools to be used in spatial analysis and one of the most important tools of these is Hydrological tool (Arc-hydro in ArcGIS). Hydrological tools had been used to understand the terrain of the surface and eventually the hydrological characteristics of the given area. In this study a comparative study had been carried out on drainage density using Digital elevation data of different sources that is SRTM with 90 meter resolution and Aster data with 30 meter resolution using the Arc-hydro tool of GIS. Study area is selected from Yamuna middle watershed of Uttarkashi District, Uttarakhand, India which provides a much variation in terrain condition including the elevation and is hard to access most of its areas. DEM has been processed separately for that of SRTM...

International Journal of Advanced Remote Sensing and GIS, 2017

This area looks at glacier area change in Chorabari Sub Watershed for 1962-1990 and 2000-2016 per... more This area looks at glacier area change in Chorabari Sub Watershed for 1962-1990 and 2000-2016 periods. Study area of Chorabari Sub Watershed extends between the latitudes of 28º-31ºN to longitudes 77º-81°E. Chorabari Sub Watershed is the part of Mandakini basin and it has total number of 40 glaciers covered an area of 81.64 km 2 with the ice reserve of 5.9856 km 2. The reduction in the glacier area has been observed on the lateral side of Chorabari glacier and not on the snout position. Overall reduction in the basin glacier area was observed 1.23 km 2 during the year 1990 to 2016. In addition, this paper describes a method for estimating the ice surface elevation changes using the SRTM (2000) and elevation data generated from topographic maps (1962) to quantify the ice thickness change for the 1962-2000 periods.

The Surana Tons watershed is one of the foremost water courses flowing in Doon valley in central ... more The Surana Tons watershed is one of the foremost water courses flowing in Doon valley in central part of dehradun. The watershed is divided in to 10 sub watershed Surana Tons/ Rami Rao ,Surana Tona/Biras Rao, Surana Tona/Nimi Nadi, Surana Tona/Nanota Nadi, Surana Tona/Jajhara, Surana Tona/Surana Nadi, Surana Tona/Bains Wala Rao, Surana Tona/Nun Nadi, Surana Tona/Karwa Pani, Surana Tona/Ramgarh.The morphometric paramentrs of surana tons watershed were measured using remote sensing and GIS technique and the quantitative analysis of watershed development of the watershed and its 10 sub watershed was carried out using LISS III, Landsat ASTER ( DEM) data and survey of India Toposheets. The Drainage orientation data suggest a poly modal circulation. The shape of a watershed is somewhat proportioned having high, moderate slope to low slope , dendrite pattern ,high values of drainage density ,stream frequency and bifurcation ratio. The bifurcation ratio and high drainage density indicate li...

The use of the capabilities of spatial technology in the decision making and other planning proce... more The use of the capabilities of spatial technology in the decision making and other planning processes requires a large amount of Geo-spatial database and a proper channel for accessing, sharing, displaying and easily processing and editing of this large amount of spatial data. Free open source web GIS system which includes Geo-server which is a web GIS server and PostgreSQL/PostGIS as an object oriented relational database management system (ORDBMS) for effective dissemination, sharing and management of spatial information over the internet had proved to be time and cost effective in the sharing of the geo-database. Web GIS can easily use for displaying of spatial information over the world and can be accessed by the any user over the internet. Graphical user interface is needed for this kind of application so that it is suitable for the user to look over their interested place with the single mouse click. These free open source software and servers can be effectively used in web-GI...

Groundwater is not only an important component of the hydrological cycle but also the most import... more Groundwater is not only an important component of the hydrological cycle but also the most important source of water for drinking, domestic, industrial and agricultural uses. The present work is aimed at assessing the water quality index (WQI) for the groundwater of Doiwala block of Doon valley. This has been determined by collecting legacy data from concerned organization.For calculating the WQI, the following 11 parametershave been considered: pH, total hardness, calcium, magnesium, chloride, nitrate, sulphate, total dissolved solids, iron, manganese and fluorides.The WQI for these samples ranges from 30 to 330. The high value ofWQI has been found to be mainly from the higher values of iron, nitrate, totaldissolved solids, hardness, fluorides, bicarbonate and manganese in the groundwater. The results of analyses have been used to suggest models for predicting water quality.

The changes in climate variability have led to a rapid retreat of mountain glacier systems which ... more The changes in climate variability have led to a rapid retreat of mountain glacier systems which are considered the lifeline of river basins and ecosystems. Scientific studies have shown that 67 % of glaciers are retreating at a startling rate in the Himalayas as a result of various factors including climate change. Glaciers and small ice caps in temperate environments are sensitive indicators of the change in climate. Satopanth and Bhagirath Kharak glaciers are located at the head of the Alaknanda valley in Chamoli District. Retreat of the snouts and area vacated by recession of the glaciers were estimated for 51 years by way of superimposing the Survey of India Toposheets of 1962 on the map .Snouts of the Satopanth and Bhagirath Kharak glaciers recorded continuous recession for the past five decades, with decline in recession of both cases. The retreat rate of Satopanth glacier is 2.88 m/year while Bagirathi Kharak retreat at a rate of 1.21 m/year which is much more less in comparison to Satopanth glacier. Retreat in the length of Satopanth and Bagirathi Kharak glacier was 2.28km and 0.66 km respectively from the period (1962-2013). The total area vacated by the Satopanth and Bhagirath Kharak glaciers during 51years was (0.354 sq. km) and (0.14 sq. km) respectively. This paper presents the results obtained from the analysis from the set of multitemporal satellite data,

International Journal of Advanced Remote Sensing and GIS, 2015

Sustainable management of water resources involves reserve upholding, proficient utilization, and... more Sustainable management of water resources involves reserve upholding, proficient utilization, and eminence management. Although, activities relating to quantity appraisal and management in terms of river discharge and water resources planning are given attention at the basin level, water quality assessment are still being done at specific locations of major concern. The greatest compensation of using remote sensing data for hydrological investigations and monitoring is its ability to generate information in spatial and temporal domain, which is very crucial for booming scrutiny. The GIS technology provides suitable alternatives for proficient supervision of large and intricate databases. Information from satellites is becoming more and more important for natural resources management and research.