Improved Detection of Tiny Macroalgae Patches in Korea Bay and Gyeonggi Bay by Modification of Floating Algae Index SCIE SCOPUS

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Title
Improved Detection of Tiny Macroalgae Patches in Korea Bay and Gyeonggi Bay by Modification of Floating Algae Index
Author(s)
Harun-Al-Rashid, Ahmed; Yang, Chan-Su
KIOST Author(s)
Yang, Chan Su(양찬수)
Publication Year
2018-09
Abstract
This work focuses on the detection of tiny macroalgae patches in the eastern parts of the Yellow Sea (YS) using high-resolution Landsat-8 images from 2014 to 2017. In the comparison between floating algae index (FAI) and normalized difference vegetation index (NDVI) better detection by FAI was observed, but many tiny patches still remained undetected. By applying a modification on the FAI around 12% to 27% increased and correct detection of macroalgae is achieved from 35 images compared to the original. Through this method many scattered tiny patches were detected in June or July in Korea Bay and Gyeonggi Bay. Though it was a small-scale phenomenon they occurred in the similar period of macroalgal bloom occurrence in the YS. Thus, by using this modified method we could detect macroalgae in the study areas around one month earlier than the previously used Geostationary Ocean Color Imager NDVI-based detection. Later, more macroalgae patches including smaller ones occupying increased areas were detected. Thus, it seems that those macroalgae started growing locally from tiny patches rather than being transported from the western parts of the YS. Therefore, this modified FAI could be used for the precise detection of macroalgae.
ISSN
2072-4292
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/844
DOI
10.3390/rs10091478
Bibliographic Citation
REMOTE SENSING, v.10, no.9, 2018
Publisher
MDPI
Subject
YELLOW SEA; COASTAL WATERS; SEAWEED AQUACULTURE; GREEN TIDES; BLOOMS; EXPANSION; PATTERNS
Keywords
macroalgal bloom; Landsat-8; floating algae index (FAI); Korea Bay; Gyeonggi Bay
Type
Article
Language
English
Document Type
Article
Publisher
MDPI
Related Researcher
Research Interests

Satellite Oceanography,Marine Safety & Security,Remote Sensing,위성해양학,해양 안전 및 보안,원격탐사

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