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7 articles for “thematic mapper”
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Mapping of Land Use/Land Cover Changes in Upper Ponnaiyar Watershed, Tamil Nadu: A Remote Sensing and GIS Approach
Abstract: Land use and land cover is an important element in understanding the interactions of human activities with the environment and thus it is necessary to assess changes. Experiential observation revealed that changes have occurred in land use/land cover and hence an attempt is made to study the changes in land use and land cover in upper Ponnaiyar river basin over a period of 40 years (1973–2013). The study carried out …
Published in Journal of Remote Sensing & GIS · Vol. 5, Issue 3, 2014 · pp. 31–35 Read article
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Land Surface Temperature Analysis in an Urbanising Landscape through Multi-Resolution Data
Abstract: Rapid changes in the land use and land cover of a region have become a major environmental concern in recent times. This has lead to unsustainable development with the reduction of green spaces and also changes in local climate and formation of urban heat islands (UHIs). Monitoring and management of land use dynamics would help in land use planning and mitigation of environmental impacts.The main goal of this paper is …
Published in Research & Reviews : Journal of Space Science & Technology · Vol. 1, Issue 1-3, 2012 · pp. 12–21 Read article
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Use of LANDSAT ETM + Data for Detection of Prosopis juliflora in Irrigated Zones
Abstract: Prosopis juliflora (PJ) can be used as a relevant indicator for integrated management of irrigated saline soil in arid zones. Remotely Sensed Landsat Enhanced Thematic Mapper Plus (ETM+) dataset was used for detection and delineation of areas under PJ. The vegetation densities were classified using normalized difference vegetation index (NDVI) whereas soil moisture levels were estimated based on distribution of soil wetness index (SWI). The classified NDVI map was combined …
Published in Journal of Remote Sensing & GIS · Vol. 4, Issue 1, 2013 · pp. 36–47 Read article
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Effect of Image Band Number and Band Multicollinearity on Mapping Accuracy of Tree Diversity and Evenness
Abstract: 800x600 Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 Satellite imageries are increasingly being used in the studies of plant diversity due to cost effective wider spatial coverage. Multispectral or hyperspectral imageries consist of different spectral bands where some bands might be multicollineared among them and deemed redundant to use in the classification/analysis. This study investigates how the accuracies of maps of tree diversity and evenness of an area …
Published in Journal of Remote Sensing & GIS · Vol. 4, Issue 2, 2013 · pp. 14–22 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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Landuse and Landcover analysis using Remote Sensing and GIS: A case study in parts of Kadapa District, Andhra Pradesh, India.
Abstract: Digital change detection techniques by using multi-temporal satellite imagery helps in understanding landscape dynamics. The present study illustrates the spatio-temporal dynamics ofLand use/cover of around Chennur, Kadapa District, Andhra Pradesh India. Landsat satellite imageries of two different time periods, i.e., Landsat Thematic Mapper (TM) were acquired by earth explorer site and quantify the changes in the study area 2005-2006 to 20015-16 over a period of 10 years. Supervised classification methodology …
Published in Journal of Remote Sensing & GIS · Vol. 9, Issue 3, 2018 · pp. 1–7 Read article
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Comparative Assessment of Tropical Basins in the Savanna and Rain Forest Ecological Zones for Crop Production in Nigeria
Abstract: AbstractThis paper reviews the precarious situation of agricultural production in Africa and Nigeria specifically, in line with the emerging concepts of geoinformatics, precision farming and sustainable agricultural intensification. To illustrate the feasibility of operationalising these concepts in Nigeria, Ikpoba and Orle River basins (that are of the rain forest and savannah ecological zones, respectively) were classified into land suitability zones for the optimum cultivation of maize, cassava, yam and oil …
Published in Research & Reviews : Journal of Ecology · Vol. 3, Issue 1, 2014 · pp. 1–14 Read article