Gathot Winarso, Joji Ishizaka


Annual summer red tides of Cochlodinium polykrikoides have happenned at southern coastal  of the South Korea, accounted economic losses of 76.4 billion won in 1995 on fisheries and other economic substantial losses. Therefore, it is important to eliminate the damage and losses by monitoring the bloom and to forecast their development and movement. On previous study, ocean color satellite, SeaWiFS, standard chlorophyll-a data was used to detect the red tide, using threshold value of chlorophyll-a concentration ≥ 5 mg/m3, resulted a good correlation using visual comparison. However, statistic based accuracy analysis has not be done yet. In this study, the accuracy of detection method was analyzed using spatial statistic. Spatial statistical match up analysis resulted 68% of red tide area was not presented in satellite data due to masking. Within red tide area where data existed, 36% was in high chlorophyll-a area and 64% was in low chlorophyll-a area. Within the high chlorophyll-a area 13% and 87% was in and out of the red tide area. It was found that the accuracy of this detection is low. However if the accuracy was yearly splitted, its found that 75% accuracy on 2002 where visually red tide detected spead out to the off-shore area. The fail and false detection are not due to the failure of the detection method but caused by limitation of the technology due to the natural condition i.e. type of red tide spreading, cloud cover and other flags such as turbid water, stray light etc.


cochlodinium polykrikoides; chlorophyll-a; SeaWiFS; red tide

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Ahn, YH, Shanmugam P, Ryu JH, et al, (2006), Satellite Detection of Harmful algal bloom occurrences in Korean waters. Harmful Algae 5: 213–231.

Doucette, GJ, and Lee CK, (2008), Preface to the Harmful Algae Special Issue: Recent progress on the research and management of Cochlodinium blooms. Harmful Algae 7: 259–260.

Froidefond, JM, Lavender S., Laborde P., Herbland A., et al, (2002), SeaWiFS Data Interpretation in a Coastal Area in the Bay of Biscay. International Journal on Remote Sensing 23(5): 881–904.

Gárate-Lizárraga, López-Cortes DJ, Bustillos-Guzmán JJ, et al, (2004), Blooms of Cochlodinium polykrikoides (Gymnodiniaceae) in the Gulf of California, Mexico. Rev. Biol. Trop, Vol 52, supl 1, San José.

Gregg, W., and Casey NW, (2007), Sampling Biases in MODIS and SeaWiFS Ocean Chlorophyll Data. Remote Sensing Environmental 111: 25–35.

Gohin, F., Saulquin B., Oger-Jeanneret H., et al, (2005), Toward a Better Assessment of the Ecological Status of Coastal Waters Using Satellite-Derived Chlorophyll-a Concentrations. Remote Sensing of Environment112(8): 3329-3340.

Ishizaka, J., Kitaura Y., Touke Y., et al, (2006), Satellite Detection of Red Tide in Ariake Sound, 1998–2001. J. Oceanography 62: 37−45.

Ishizaka, J., and Winarso G., (2007), Detection of Cochlodinium Polykrikoides Bloom Using Remote Sensing at South Korean Seawaters. Presented on Japan Oceanography Society Meeting, Tokyo University of Marine Science, 2007 (not published).

Lee, CK, (2005), National Report on HABs in Korea. NOWPAP-CEARAC, Toyama City Toyama Japan.

Lee, YS, (2006), Factor Affecting Outbreaks of High-Density Cochlodinium Polykrikoides Red Tides in the Coastal Seawaters Around Yeosu and Tongyeong, Korea. Mar. Poll. Bull. 52: 1249 – 1259.

Kim, HG, Lee SG, and Ahn KH, (1997), In: Ahn, KH, (Ed.) Recent Red Tides in Korean Waters. Kudeok Publishing, Pusan, 280.

Stumpf, RP, (2001), Applications of Satellite Ocean Color Sensors for Monitoring and Predicting Harmful Algal Blooms. J. Human Ecol. Risk Assess. 7: 1363–1368.

Stumpf, RP, Culver ME, Tester PA, et al, (2003), Monitoring Karenia Brevis Blooms in the Gulfof Mexico Using Satellite Ocean Color Imagery and Other Data. Harmful Algae News 2: 147−160.

Suh, YS, Jang LH, Lee NK, et al, (2004), Feasibility of Red Tide Detection Around Korean Waters Using Satellite Remote Sensing. J. Fish. Sci. Tech. 7: 148−162.

Tan, CK, Ishizaka J., Matsumura S., et al, (2006), Seasonal Variability of SeaWiFS Chlorophyll a in the Malacca Straits in Relation to Asian monsoon. Cont. Shelf Res. 26: 168–178.

Tomlinson, MC, Stumpf RP, Ransibrahmanakul V., et al, (2004), Evaluation of the use of SeaWiFS imagery for detecting Karenia brevis harmful algal blooms in the eastern Gulf of Mexico. Remote Sens. Env. 91: 293–303.

Winarso G., (2012), Red Tide Detection Using Seawifs Standard Chlorophyll-A Algorithm in South East Korean Waters. Internasional Journal of Remote Sensing and Earth Sciences 9(1): 53-62.


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