Application Of Remote Sensing Technique In Geomorphological Alterations, Landuse Changes, Sub-Marine And Coastal Discharges In Atalanti Watershed (Central – Eastern Greece)
Volume 4 - Issue 2, February 2020 Edition
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Author(s)
Lappas Ioannis
Keywords
satellite imagery; LANDSAT; digital image pre-processing and analysis; surface characteristics.
Abstract
This paper deals with the digital image pre- and post-processing and analysis methods used in remote sensing technique. Remote sensing is the science of obtaining and interpreting information from a distance using sensors that are not in physical contact with the object being observed. Remote sensing data (LANDSAT 5, 7, 8) during different time periods were compared and rectified and their differences were underlined as well. Also, the observations that led to the successful application of relatively new techniques of image analysis to remote sensing were explained and the close relationship and interaction that exists in research level between image analysis and geoinformatics, through GIS was emphasized. Remote sensing provides a means of observing geomorphological state variables over large areas. With the introduction of the earth observing satellites, remote sensing has become an important tool in analyzing the Earth’s surface characteristics, and hence in supplying valuable information necessary for the geomorphological analysis. Remote sensing techniques have been widely used to delineate the land use changes, to estimate the submarine and coastal discharges, if any, and to give satisfactory explanations in any geomorphological alterations and land surface characteristics. Today, near-real time environmental monitoring and management is possible with the help of high resolution satellite data.
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