Estimation of Coastal Suspended Sediment Concentration using Satellite Data and Oceanic In-Situ Measurements KCI

Title
Estimation of Coastal Suspended Sediment Concentration using Satellite Data and Oceanic In-Situ Measurements
Alternative Title
Estimation of Coastal Suspended Sediment Concentration using Satellite Data and Oceanic In-Situ Measurements
Author(s)
Min-Sun Lee; Kyung-Ae Park; Jong-Yul Chung; 안유환; 문정언
KIOST Author(s)
Moon, Jeong Eon(문정언)
Publication Year
2011-12
Abstract
Suspended sediment is an important oceanic variable for monitoring changes in coastal environment related to physical and biogeochemical processes. In order to estimate suspended sediment concentration (SSC) from satellite data, we derived SSC coefficients by fitting satellite remote sensing reflectances to in-situ suspended sediment measurements. To collect in-situ suspended sediment, we conducted ship cruises at 16 different locations three times for the periods of Sep.-November 2009 and Jul. 2010 at the passing time of Landsat ETM+ . Satellite data and in-situ data measured by spectroradiometers were converted to remote sensing reflectances ( Rrs ). Statistical approaches proved that the exponential formula using a single band of Rrs (565) was the most appropriate equation for the estimation of SSC in this study. Satellite suspended sediment using the newly-derived coefficients showed a good agreement with insitu suspended sediment with an Root Mean Square (RMS) error of 1-3 g/ m3 . Satellite-observed SSCs tended to be overestimated at shallow depths due to bottom reflection presumably. This implies that the satellite-based SSCs should be carefully understood at the shallow coastal regions. Nevertheless, the satellite-derived SSCs based on the derived SSC coefficients, for the most cases, reasonably coincided with the pattern of in-situ suspended sediment measurements in the study region.
ISSN
1225-6161
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/1755
Bibliographic Citation
대한원격탐사학회지, v.27, no.6, pp.677 - 692, 2011
Publisher
대한원격탐사학회
Keywords
Suspended Sediment; Landsat ETM+; Remote Sensing Reflectance
Type
Article
Language
English
Publisher
대한원격탐사학회
Related Researcher
Research Interests

Ocean color,Ocean optical observation,Remote sensing,해색원격탐사,해양광학관측,원격탐사

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