Aerospace Monitoring of Water Quality

Authors

Anatoly A. Gitelson, University of Nebraska - LincolnFollow
Ferenc Szilagyi, Water Resources Research Center, Budapest, Hungary

Document Type

Article

Date of this Version

1991

Comments

Published in Proceeding of the Geoscience and Remote Sensing Symposium, 1991. IGARSS '91. Remote Sensing: Global Monitoring for Earth Management. DOI: 10.1109/IGARSS.1991.577669. Copyright 1991, IEEE. Used by permission. Pages 75-78, volume 1.

Abstract

The potential of using remote sensing for the detection of chlorophyll-a (CHL), dissolved organic matter (DOM), and suspended matter (SM) concentrations in coastal and inland waters was investigated using measurements of (ir)radiance spectra along with simultaneous earth-reference data. The range of CHL was 0.1 to 350 μg/l, SM was 0.1 to 43 mg/l, and DOM absorption at the 380 nm was 0.1 to 10^-1. Factor and signature analysis reveal allometric relationships between constituent concentrations C and functions of reflectance Z_k of the type C_k = aZ_k^b. Appropriate functions of R were found: Z_chl = R(700)/R(675), Z_sm = R(560)/R(520), and Z_dom = {R(480) + k[R(700)/R(675]}/R(630). The maximum estimation errors were: CHL - 3 μg/l, DOM - 0.065 μgC/l, and SM - 4 mg/l.