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LADCP-System
Goal	Obtaining a current velocity profile from surface to bottom (down to 6000 m)  during a standard CTD-deployment.
Description	The LADCP-system consists of  two 300-kHz RDI Workhorse ADCP’s and a battery container. Using 2 bottle positions in a CTD-frame the ADCP’s and the battery-container are mounted in a sub-frame. 1 ADCP is mounted upward-looking and 1 ADCP is mounted downward looking. Both ADCP’s are equipped with bottom-tracking firmware. Processing the raw data to velocity profiles is possible by using Matlab scrips written by Martin Visbeck.
Remarks	During a CTD/LADCP-cast it is essential to log high quality and high frequency time- and position-data in order to measure the movements of the ship and correct for that during the processing of the LADCP-data. On board R.V. Pelagia a Seapath 2000 shipmotion sensor provides this high accuracy time- and position-data in NMEA-0183  RMC-format with a 10 Hz update frequency. The SBE11+ has a NMEA interface for this kind of navigational data and the CTD-software (Seasave for Windows) provides an option to append updated NMEA-data to every scan.
Contact	Sven Ober