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http://dx.doi.org/10.4217/OPR.2011.33.3.397

Casting Lowered-ADCP and Data Processing Methods for Configuring Vertical Current Structure  

Kim, Eung (Climate Change & Coastal Disaster Reserach Department, KORDI)
Jeon, Dong-Chull (Climate Change & Coastal Disaster Reserach Department, KORDI)
Shin, Chang-Woong (Climate Change & Coastal Disaster Reserach Department, KORDI)
Kim, Dong-Guk (Climate Change & Coastal Disaster Reserach Department, KORDI)
Publication Information
Ocean and Polar Research / v.33, no.spc3, 2011 , pp. 397-407 More about this Journal
Abstract
To understand the vertical structure of ocean currents from raw data observed by lowered-ADCP (LADCP), these data require post-processing. Data were processed using Krahman's version 10.8 processing software based on Matlab. It is estimated the influence of auxiliary data affecting the processed current structure. The bottom-tracked velocities and the GPS information significantly contribute the offset on reference velocities in the bottom layer and barotropic ones in the middle layer, respectively. Good quality data can be obtained when LADCP is least tilted in pitch and roll during observation. In situ application of LADCP to the (northward) volume transports of Kuroshio in the East China Sea proved to be 24.8. Sv (= $1{\times}10^6m^3s^{-1}$) in October 2007, and 28.2 Sv in June 2008, respectively. The volume transport is relatively large over the continental slope when compared to the shelf or the deep sea.
Keywords
Lowered-ADCP; post data processing; vertical current structure; Kuroshio; East China Sea;
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