KOPRI Repository

Cochlodinium polykrikoides red tide detection in the south sea of Korea using spectral classification of MODIS data

Cited 11 time in scopus
Metadata Downloads
Title
Cochlodinium polykrikoides red tide detection in the south sea of Korea using spectral classification of MODIS data
Authors
Joji Ishizaka
Kim, Hyun-cheol
Young Baek Son
Taehee Lee
Jong-Chul Jeong
Subject
Oceanography
Keywords
HAB; MODIS; spectral classification
Issue Date
2011
Publisher
Springer
Citation
Joji Ishizaka, et al. 2011. "Cochlodinium polykrikoides red tide detection in the south sea of Korea using spectral classification of MODIS data". Ocean Science Journal, 46(4): 239-263.
Abstract
To distinguish true red tide water from non-red tide water in the South Sea of Korea, we developed a systematic classification method using spectral information from MODIS level products and applied it to five different harmful algal bloom events. Red tide and nonred tide waters were classified based on four different criteria. The first step revealed that the radiance peaks of potential red tide water occurred at 555 and 678 nm. The second step separated optically different waters that were influenced by relatively low and high contributions of colored dissolved organic matter (CDOM) (including detritus) to chlorophyll. The third and fourth steps discriminated red tide water from non-red tide water based on the blue-to-green ratio in areas with lower and higher contributions of CDOM to chlorophyll, respectively. After applying the red tide classification (using the four criteria), the spectral response of the red tide water, which is influenced by pigment concentration, showed different slopes for the blue and green bands. The opposite result was found for non-red tide water, due to decreasing phytoplankton absorption and increasing detritus/CDOM absorption at blue bands. The results were well matched with the discoloration of water (blue to dark red/brown) and delineated the areal coverage of C. polykrikoides blooms, revealing the nature of spatial and temporal variations in red tideoom events. Red tide and nonred tide waters were classified based on four different criteria. The first step revealed that the radiance peaks of potential red tide water occurred at 555 and 678 nm. The second step separated optically different waters that were influenced by relatively low and high contributions of colored dissolved organic matter (CDOM) (including detritus) to chlorophyll. The third and fourth steps discriminated red tide water from non-red tide water based on the blue-to-green ratio in areas with lower and higher contribut
URI
http://repository.kopri.re.kr/handle/201206/6204
DOI
http://dx.doi.org/10.1007/s12601-011-0019-6
Files in This Item
General Conditions
      ROMEO Green
    Can archive pre-print and post-print or publisher's version/PDF
      ROMEO Blue
    Can archive post-print (ie final draft post-refereeing) or publisher's version/PDF
      ROMEO Yellow
    Can archive pre-print (ie pre-refereeing)
      ROMEO White
    Archiving not formally supported

    qrcode

    Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

    Browse