HR: 1300h
AN: OS52D-10    [PDF]
TI: Hydrogyaphic Observations In The Eastern Equatorial Pacific In November 1999
AU: * Lee, J
EM: jhlee@kordi.re.kr
AF: Korea Ocean Research and Development Institute, P.O.Box 29 Ansan, Seoul, 425-600 Korea, Republic of
AU: Cho, C
EM: chcho@kordi.re.kr
AF: Korea Ocean Research and Development Institute, P.O.Box 29 Ansan, Seoul, 425-600 Korea, Republic of
AU: Richards, K J
EM: rkelvin@hawaii.edu
AF: School of Ocean and Earth Science and Technology, International Pacific Research Center, University of Hawaii, 2525 Corrrea Road, Honolulu, HI 96822 United States
AU: Yang, S
EM: sryang@hosim.kwangju.ac.kr
AF: Kwangju University, 52 Hyodeok Ro, Kwangju, 503-703 Korea, Republic of
AB: In November 1999 a hydrographic survey was carried out in a section from $5\deg$N to $3\deg$S in the eastern along $125\deg$W. Velocity profiles showed four zonal and three meridional flow cores, indicating the equatorial zonal currents and the flow associated with the tropical instability waves. Water property sections showed that the warm and fresh surface water moving southward from the northern part formed a sharp thermal front at $2.1-2.2\deg$N. The cold and saline water subducted beneath the front and continued to the north to $4.5\deg$N, deepening to the thermocline depth. The speed of the saline water subduction reached up to 55 cm/s at 80 m depth at $3.2\deg$N and the northward meridional flow at this location appeared down to 300 m depth below the thermocline. Dissolved oxygen (DO) data agreed well with the observations from T-S and velocity fields. This suggests that DO can be a good tracer to distinguish water masses in this complicated region. The features of Chlorophyll {\it a} and other biochemical materials will be also presented.
DE: 4223 Descriptive and regional oceanography
DE: 4231 Equatorial oceanography
DE: 4283 Water masses
DE: 4528 Fronts and jets
DE: 4572 Upper ocean processes
SC: Ocean Sciences [OS]
MN: 2004 Ocean Sciences Meeting