Magdalena Andres 1 , Jae-Hun Park 1 , Mark Wimbush 1 , Kyung Il Chang 2 , Hiroshi Ichikawa 3 1 Graduate School of Oceanography, University of Rhode Island 2 School of Earth and Environmental Sciences, Seoul National University 3 Institute of Observational Research for Global Change, JAMSTEC May 24, 2007 The 14 th PAMS/JECSS Workshop
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Magdalena Andres 1, Jae-Hun Park 1, Mark Wimbush 1, Kyung Il Chang 2, Hiroshi Ichikawa 3 1 Graduate School of Oceanography, University of Rhode Island.
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Magdalena Andres1, Jae-Hun Park1, Mark Wimbush1,
Kyung Il Chang2, Hiroshi Ichikawa3
1 Graduate School of Oceanography, University of Rhode Island2 School of Earth and Environmental Sciences, Seoul National University3 Institute of Observational Research for Global Change, JAMSTEC
May 24, 2007 The 14th PAMS/JECSS Workshop
Observational highlights of Kuroshio in the ECS
Introduce study area and instruments Velocity
mean cross-section depth of maximum velocity near-bottom velocity time series
Transport: mean time series spectrum
Study area (Dec. 2002 – Nov. 2004)
East China Sea
Near PN-line
Study area
East China Sea
Near PN-line
PIES & CPIES 23 months
ADCPs13 months(K.I. Chang)
Emits 12 kHz sound pulses at sea floor
Measure (hourly): : echo time from surface P: bottom pressure V: deep horizontal current
Calculate: geostrophic shear from (using dynamic height
inferred from a lookup table) deep geostrophic flow from P reference deep flow with the current, V
Near-bottom velocity Positive flow extends to bottom 50-100 km seaward of shelfbreak Persistent countercurrent along slope High frequency variability on the upper slope