Determination of water-quality parameters in Lake Constance using Landsat-TM images

K. Schneider; Heike Bach; Wolfram Mauser

doi:10.1117/12.264264

17 January 1997 Determination of water-quality parameters in Lake Constance using Landsat-TM images

K. Schneider, Heike Bach, Wolfram Mauser

Proceedings Volume 2959, Remote Sensing of Vegetation and Sea; (1997) https://doi.org/10.1117/12.264264
Event: Satellite Remote Sensing III, 1996, Taormina, Italy

Abstract

LANDSAT TM data were used to determine the spatial patterns of water quality parameters, in particular pigment concentration, secchi disk depth, calcite, suspended sediments, and surface temperature. A prerequisite to quantitatively determining water quality parameters from LANDSAT data is to correct sensor noise. Methods to correct LANDSAT specific noise such as sensor reflectance. Ground truth measurements of pigment concentration and secchi disk depth were available for 17 scenes. A strong correlation of measured pigment concentration and LANDSAT derived reflectance was found for 13 scenes. A scene independent pigment algorithm was not found however. Using ground truth measurements to calibrate the surface reflectance to pigment concentration allows a determination of the concentration with an accuracy better than 1 (mu) g/1. Secchi disk depth estimates can be obtained with an accuracy of better than 0.5 m. Surface temperatures were calculated from TM data without ground truth measurements. After appropriate image processing, LANDSAT derived surface temperatures yield an accuracy of 0.53 degrees K.

Citation Download Citation

K. Schneider, Heike Bach, and Wolfram Mauser "Determination of water-quality parameters in Lake Constance using Landsat-TM images", Proc. SPIE 2959, Remote Sensing of Vegetation and Sea, (17 January 1997); https://doi.org/10.1117/12.264264

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