WATER

Remote Sensing and GIS for Watershed Analysis

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Geographic information system (GIS) is a system designed to capture, store, manipulate, analyse, manage, and present all types of spatial or geographical data. The acronym GIS is sometimes used for geographical information science or geospatial information studies to refer to the academic discipline or career of working with geographic information systems and is a large domain within the broader academic discipline of Geo informatics. Remote sensing is the process where the Remote sensors collect data by detecting the energy that is reflected from earth. These sensors can be on satellites or mounted on aircrafts. The electromagnetic radiation is normally used as an information carrier in remote sensing. Remote sensors gather information by measuring the electromagnetic radiation that is reflected, emitted and absorbed by objects in various spectral regions, from gamma-rays to radio waves