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Proceedings Paper

Joint use of multitemporal and multisensor remote sensing data, PCA, and GIS techniques for the detection of changes at the lower Alfios River Channel, Greece
Author(s): Konstantinos G. Nikolakopoulos; Dimitris A. Vaiopoulos; George Aim. Skianis
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Paper Abstract

Alfios is the biggest river of the Peloponnese and the ninth biggest river in Greece. It drains an area of almost 2575 km2 in Western Peloponnese and discharges at the Kiparissiakos Gulf. Due to its extent Alfios basin presents complex physiography and geomorphology. In order to detect the changes of the Alfios river channel we used the following multitemporal and multisensor satellite images: A Landsat 5 TM subscene, acquired on July 27 1984, A Landsat 5 TM subscene, acquired on September 18 1986, Two KFA-1000 images of September 1986, A Landsat 7 ETM cloud free subscene, acquired on July 28 1999. As the images have been acquired from different sensors and at different dates we used absolute atmospheric correction algorithms in order to reduce the phenomena of atmospheric attenuation. We also used fusion techniques in order to fuse multispectral ETM data with panchromatic data as well as TM multispectral data of 1984 & 1986 with high-resolution data of the Russian camera KFA-1000. The PCA method and GIS techniques have been applied, at the resulting atmospheric corrected multispectral images with 15m resolution, in order to map the changes of the Alfios river channel during the 1984-1999 period with very good results. During the period 1984-1999 the seventh order Channel of Alfios River has been subject to big changes. The main cause for these changes is the human activity in the area.

Paper Details

Date Published: 13 February 2004
PDF: 12 pages
Proc. SPIE 5239, Remote Sensing for Environmental Monitoring, GIS Applications, and Geology III, (13 February 2004); doi: 10.1117/12.510820
Show Author Affiliations
Konstantinos G. Nikolakopoulos, Univ. of Athens (Greece)
Dimitris A. Vaiopoulos, Univ. of Athens (Greece)
George Aim. Skianis, Univ. of Athens (Greece)

Published in SPIE Proceedings Vol. 5239:
Remote Sensing for Environmental Monitoring, GIS Applications, and Geology III
Manfred Ehlers; Hermann J. Kaufmann; Ulrich Michel, Editor(s)

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