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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) ALL CONTENT : Special sessions : Mapping chlorophyll-a concentration in laizhou bay using landsat 8 oli data
Mapping chlorophyll-a concentration in laizhou bay using landsat 8 oli data
Author : CHENGKUN ZHANG(1), MIN HAN(2)
ABSTRACT
Recent years, the increasing human activities such as the sea aquaculture, industrial production, contribute to the water
eutrophication of Laizhou Bay, Bohai Sea, China. The concentration of chlorophyll-a, an important index of water quality
status, is often used to describe the extent of eutrophication. With the characteristics of rapidity, cyclicity, large-scale
and low-cost, the technique of remote sensing plays a crucial role in quantitatively monitoring the status of water quality.
MODIS is designed specifically for ocean color, and its Chlorophyll-a inversion models for case„°water were already
widely used. But for its lower spatial resolution, MODIS cannot satisfy the needs of monitoring the water quality in
coastal case „± waters, such as Laizhou Bay. The shorter cycle, the higher spatial of Landsat 8 OLI data has offered a
great promise for case „± water status quality monitoring. In this study we utilized two Landsat 8 OLI (Path/Row
120/034) images, for coastal waters around Laizhou city in summer and winter, to map the distribution of chlorophyll-a
concentration. Optimal linear regression models between OLI band combination and concurrent in suit water quality
measurements are developed respectively, and then are used to estimate the chlorophyll-a concentration in different
season. According to the chlorophyll-a concentration distribution map, the water quality of the coastal waters around
Laizhou city is in a certain degree of eutrophication.
File Size : 835,161 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Special sessions
Date Published : 28/08/2015
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