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178 articles for “GIS and remote sensing”
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Landslide Risk Assessment in Kodagu District, Karnataka: A Case Study
Abstract: AbstractIn this study, an attempt has been made to assess the landslide risk zones using a GIS based weighted linear overlay method with Satty’s analytical hierarchical process to maintain consistency for assigning rank and weight for following factors includes geology, geomorphology, rainfall, soil, road density, drainage density, and topographic triggering factors such as slope and aspects are taken as input for assessment of landslide risk.Thus the technique used in landslide …
Published in Journal of Geotechnical Engineering · Vol. 4, Issue 3, 2017 · pp. 19–34 Read article
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Landscape Characterization in a Watershed of Western Himalayan Ecoregion
Abstract: The study was carried out in Kalsa watershed of Western Himalayan Ecoregion to quantify the landscape structure with special reference to different forest ecosystems. Vegetation and land use map generated using satellite remote sensing data was taken as an input for quantification of landscape structure, which was quantified based on different patch attributes (number, area, shape complexity) and landscape indices viz., Euclidean nearest neighbor distance and contagion. Temperate broadleaf forest …
Published in Journal of Remote Sensing & GIS · Vol. 6, Issue 1, 2015 · pp. 1–10 Read article
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Forest Change Monitoring of Ghatsila, Musabani and Dhalbhumgarh Block of East Singbhum District, Jharkhand State using Image Subtraction, Image Ratioing and SAM Classification Method
Abstract: Forests and biodiversity is the key of all life forms. The richer the forest, greater the opportunity for economic development and adaptive responses to the challenge of climate change induced disasters. The forest area of Jharkhand is rapidly destroyed due to unscientific mining, industry induced air pollutants and human encroachment in forest area. This heavy deforestation activity has changed the ecosystem and environment. Recent advancement in remote sensing technology has …
Published in Journal of Remote Sensing & GIS · Vol. 6, Issue 1, 2015 · pp. 37–42 Read article
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Analysis of Color and Particulate Depolarization Ratio Profiles for Aerosols using CALIPSO Level 2 Data
Abstract: Aerosols have an important impact on Earth’s climate system by absorbing, scattering and modifying cloud properties. There are many sources of aerosols; both natural and resulting from human activities with widely varying distribution both in space and time. In addition to aerosol columnar spatio-temporal variation, the vertical profile temporal studies provide valuable inputs to various climatic models and radiative transfer studies. This study focuses on the analysis of color ratio …
Published in Journal of Remote Sensing & GIS · Vol. 6, Issue 2, 2015 · pp. 1–5 Read article
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Spatio-Temporal Variability Assessment of Biophysical Parameters in the Tropical Deciduous Broadleaf Forest in Eastern India
Abstract: In the recent years, study of phenology variation has taken significance quintessential part of a bigger research agenda of seasonal change. This study has attempted to (a) analyse the monthly, quarterly, inter-annual and seasonal variation of vegetation (b) observe the variation in phenological transition dates of tropical deciduous broadleaf forest in eastern India from 2001 to 2014 (c) correlation between NDVI (Normalized Difference Vegetation Index) and LST (Land Surface Temperature) …
Published in Journal of Remote Sensing & GIS · Vol. 6, Issue 2, 2015 · pp. 61–68 Read article
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Aerosol Loadings in Association with Vegetative Properties: A Case Study Over North Indian Region
Abstract: Aerosols play an important role in the atmospheric absorption and scattering of light, thereby leading to both warming and cooling of atmosphere. In the Indian subcontinent, the concentration of the aerosols is increasing due to anthropogenic activities which in turn could affect the vegetative properties in the region. The paper presents the study of aerosol optical depth (AOD) in association with vegetative properties using Level 3 data from Multi-angle Imaging …
Published in Journal of Remote Sensing & GIS · Vol. 6, Issue 3, 2015 · pp. 1–5 Read article
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Wasteland Management and Quality of Ground Water in Swarnamukhi River Basin, Chittoor District, Andhra Pradesh: A Case Study
Abstract: The present study, the identification and development of wastelands in Swarnamukhi basin in Chittoor district of Andhra Pradesh, is based on primary survey of wastelands. In this study, the main stress is on the different reclamation and utilization methods to use wastelands, which are of complex in nature. It is a novel experiment. It is not just a study of the problem, which closes with suggestions and recommendations but represents …
Published in Journal of Remote Sensing & GIS · Vol. 6, Issue 3, 2015 · pp. 52–64 Read article
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Analysis of Groundwater Quality Parameters of Kandra River Basin of Panhala Tehsil, Kolhapur District, Maharashtra
Abstract: The Kandra river basin occupies an area of about 148 sq. km. in Kolhapur District of Maharashtra. The area lies between Long. 740 0′ 9″ E to 740 05′ 12″ E and Lat. 160 45′ 10″ N to 160 50′ 10″ N in Survey of India Toposheet no. 47L/1. The study area is mainly underlain by Deccan basaltic flows. Quaternary and recent formations are confined mainly to the river valleys. …
Published in Journal of Remote Sensing & GIS · Vol. 6, Issue 3, 2015 · pp. 65–69 Read article
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Urban Flood Hazard Modeling for Noida City
Abstract: This contemporary work unveils the usage of a new methodology to carry out an accurate hazard mapping of urban flood footprints. It is based on wetness transformation. It is a procedure of conversion of multi-spectral-bands into three dimensional feature space. The present study embraces conversion of thematic mapper (TM) imagery of Landsat to a three dimensional array; brightness, wetness and greenness, followed by the technique of change detection to locate …
Published in Journal of Remote Sensing & GIS · Vol. 7, Issue 1, 2016 · pp. 10–26 Read article
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Prioritization of Micro/Mini Watersheds and Identification of Locations to Construct Rainwater Harvesting Structures using Morphometric Parameters and Geoinformatics
Abstract: Nalluru Amani Kere Watershed (NAKW) is constituent of Caveri river basin, Karnataka state, covering 415.68 km2 area, representing arid climate. The NAKW has been divided into thirty one micro/mini watersheds (MWS) of 3rd order, designated as MWS-1 to MWS-31, for the purpose of prioritization. For this purpose, morphometric parameters were calculated under linear and shape aspects. Linear aspects such as; drainage density (Dd), bifurcation ratio (Rb), stream frequency (Fu), length …
Published in Journal of Remote Sensing & GIS · Vol. 7, Issue 2, 2016 · pp. 1–15 Read article
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FEATURE SELECTION METHODS FOR OBJECT-BASED CLASSIFICATION OF TROPICAL FOREST USING SPOT 5 IMAGERY
Abstract: The faster development of spatial technology, the more options in material for image analysis and this characteristic also leads to a huge diversity of image features. Aiming at investigating the optimal feature space for classification with emphasis on efficiency in less time-consuming, image objects separability, certain numbers of approaches ranging from graphical to statistical methods involving class separation distances have been used for classification related to Object-based Image Analysis (OBIA). …
Published in Journal of Remote Sensing & GIS · Vol. 7, Issue 2, 2016 · pp. 41–49 Read article
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Improvement of a Geospatial Web-Network for Road Substructure Management in Mekelle City, Ethiopia
Abstract: Infrastructure is a framework which covers the basic facilities and capacities of material, institutional and personnel kind which are essential for the functioning of a national economy. Road is key infrastructure which leads to an overall better standard of living; it is currently the heart of regional connectivity of a continent. Road substructure management is a challenging task to many developing countries, due to limited technical resources. This is a …
Published in Journal of Remote Sensing & GIS · Vol. 7, Issue 3, 2016 · pp. 35–46 Read article
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Evaluation of Water Quality for Irrigation Purpose in Sitanadi Basin, Udupi District, Karnataka
Abstract: Present study has been carried out with the objective to assess various factors controlling the groundwater quality with respect to irrigation, seasonal variations of groundwater quality for pre and post monsoon periods and to compare its suitability for irrigation use confirming to the latest water quality standards for irrigation. Sitanadi basin is located in the west coast of peninsular India, Udupi district of Karnataka. It extended between 13°20׳ and 13°35׳ …
Published in Journal of Remote Sensing & GIS · Vol. 8, Issue 1, 2017 · pp. 9–24 Read article
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Forest Fire Hazards Vulnerability and Risk Assessment in Bhajji Forest Range of Himachal Pradesh (India): A Geospatial Approach
Abstract: The vulnerability of the Indian forests to fire varies from place to place depending upon the type of vegetation and climate. The coniferous forest in the region is very prone to fire. Objective of the current work is to prepare a model which articulate the forest fire risk and assess the fire vulnerability so that the concerned authorities can minimize the fire danger. Fire hazard mapping was performed using knowledge …
Published in Journal of Remote Sensing & GIS · Vol. 8, Issue 1, 2017 · pp. 25–40 Read article
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Some Aspects of the Vagaries in the Pattern of Meteorological Parameters in the State of Rajasthan in Association with the LULC Change
Abstract: Present work examined the role of the change in land use and land cover (LULC) in altering the rainfall and temperature pattern over the western part of the Rajasthan, India. For this purpose, the high-resolution gridded rainfall and surface temperature data sets prepared by IMD (India Meteorological Department) and Climatological Research Unit Time Series (CRU TS 3.21) have been utilized. An increase in surface temperature and decrease in rainfall for …
Published in Journal of Remote Sensing & GIS · Vol. 8, Issue 1, 2017 · pp. 53–65 Read article
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AOD Retrieval Over Different LULC Features Using AWiFS Data—A Case Study Over Dehradun
Abstract: In this study, an attempt is made to estimate the Aerosol Optical Depth (AOD) using a physically based radiative transfer model i.e. SMART (Simple Model for Atmospheric Radiative Transfer) over different LULC features. The forward procedure requires the data from Band B2: 0.52-0.59 μm of Resourcesat-2 Advanced Wide Field Sensor (AWiFS). While some of the atmospheric parameters, through transmittance, spherical albedo have been parameterized, few of them are utilized from …
Published in Journal of Remote Sensing & GIS · Vol. 8, Issue 2, 2017 · pp. 54–57 Read article
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Water Spread Area Dynamic of Chilika Lake: A Geospatial Approach
Abstract: Chilika lake is the largest lagoon in Asia on the east coast peninsular India covering about hundred thousand hectares of land, one among six Indian wetlands declared under the Ramsar convention in 1982. Lake shrinkage is another important ecological transformation. This may be due to several factors, both natural and human. The study area is Chilika Lake which is located at 19°27’58.081”N–19°53’24.438”N latitude and 85°6’5.301”E–85°40’36.149”E longitude on the east-coast of …
Published in Journal of Remote Sensing & GIS · Vol. 8, Issue 3, 2017 · pp. 17–21 Read article
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Seasonal Analysis of Urban Heat Island of Greater Hyderabad Using Thermal Remote Sensing
Abstract: Urban areas are characterized by densely built-up area. Due to urbanization and consequent urban growth, green spaces, water bodies and other land use changes are resulting in several environmental issues and concerns. One such urban environmental issue is the emergence of Urban Heat Island. An Urban Heat Island (UHI) is the characteristics of elevated temperaturere of both atmosphere and land surface in urban areas as compared with the un-urbanized surrounding …
Published in Journal of Remote Sensing & GIS · Vol. 9, Issue 1, 2018 · pp. 49–56 Read article
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Monitoring and Analysis of Displacement Using InSAR Techniques for Gulaba Landslide Site
Abstract: Interferometric Synthetic Aperture Radar (InSAR) is a powerful remote sensing technique which provides high spatial resolution images with continuous temporal coverage of the earth surface data for monitoring of long-term landslide displacement. In the current study over Gulaba Camp in Manalito Marhi (Himachal Pradesh, India) region, a novel approach to monitor the landslide using the ascending and descending InSAR data sets is being implemented. 30 ascending and 23 descending Sentinel-1 …
Published in Journal of Remote Sensing & GIS · Vol. 9, Issue 2, 2018 · pp. 37–46 Read article
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Assessment of Different Methods for Soil Moisture Estimation: A Review
Abstract: Importance of precise soil moisture information is well understood in various fields like agriculture, hydrology, meteorology, environmental studies etc. Soil moisture is very dynamic, both temporally and spatially, therefore its continuous monitoring is necessary. There are various methods available to retrieve soil moisture status. All these methods have their own advantages and disadvantages and should be used with caution depending upon the requirements and demand of the project. In this …
Published in Journal of Remote Sensing & GIS · Vol. 9, Issue 1, 2018 · pp. 57–73 Read article