Surface chlorophyll a variability near the Dokdo Islets, East Sea (Japan Sea) observed from a moored buoy: Possible consequences of eddy-driven vertical mixing

Title
Surface chlorophyll a variability near the Dokdo Islets, East Sea (Japan Sea) observed from a moored buoy: Possible consequences of eddy-driven vertical mixing
Author(s)
홍기훈; 박재훈; 양성렬; 김석현; 양동범; 박찬홍; 이현미; 안유환; 유주형; 문정은; 김영일
KIOST Author(s)
Kim, Suk Hyun(김석현)Lee, Hyunmi(이현미)Ryu, Joo Hyung(유주형)KIM, YOUNG-IL(김영일)
Alternative Author(s)
홍기훈; 박재훈; 김석현; 양동범; 박찬홍; 이현미; 안유환; 유주형; 김영일
Publication Year
2012-10-24
Abstract
As part of the Dokdo East Sea Time Series Studies (DETS) of the East Sea (Sea of Japan), a DETSbuoy system equipped with a set of meteorological sensors (wind, temperature, humidity,pressure, and wave height) 2 m above sea level, a conductivity-temperature-depth (CTD) sensorwith a fluorescence detector 1 m below the sea surface, and CTD sensors at 20-, 40-, 60-, 80-,100-, and 120-m depths was deployed on the 130-m-deep continental shelf of the Dokdo Islets inthe center of the East Sea. Sensor observations have been taken every 10 min since February2009 and transmitted to an onshore laboratory in Uljin on the east coast of the Korean Peninsula.Chlorophyll a concentrations in surface water at the DETS buoy exhibited frequentlow-concentration maxima in addition to low-frequency bimodal annual chlorophyll aconcentration variations due to a spring phytoplankton bloom and a smaller fall bloom. Thesesmaller frequent blooms appear to have been triggered by injection of nutrient-rich deepsubsurface water to sunlit surface water. This eddy-pumping mechanism was hypothesizedbased on cross-correlation analyses among daily mean water temperature and salinity at variousdepths (2–120 m below sea surface) and wind speed, wave height, and in vivo chlorophyll a atthe sea surface using a one-year data set from 30 March to 7 February retrieved from the DETSbuoy. This mechanism is also responsible for uctivity-temperature-depth (CTD) sensorwith a fluorescence detector 1 m below the sea surface, and CTD sensors at 20-, 40-, 60-, 80-,100-, and 120-m depths was deployed on the 130-m-deep continental shelf of the Dokdo Islets inthe center of the East Sea. Sensor observations have been taken every 10 min since February2009 and transmitted to an onshore laboratory in Uljin on the east coast of the Korean Peninsula.Chlorophyll a concentrations in surface water at the DETS buoy exhibited frequentlow-concentration maxima in addition to low-frequenc
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/27503
Bibliographic Citation
Open Science Symposium on Western Pacific Ocean Circulation and Climate, pp.40, 2012
Publisher
NPOCE
Type
Conference
Language
English
Publisher
NPOCE
Related Researcher
Research Interests

Coastal Remote Sensing,RS based Marine Surveillance System,GOCI Series Operation,연안 원격탐사,원격탐사기반 해양감시,천리안해양관측위성 운영

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