Additional Participants

Senior Personnel

Neal Pettigrew

Christopher Duncombe Rae

Technician, Programmer

John Wallinga

Linda Mangum

Organizational Partners

Kent State University

University of Rhode Island Graduate School of Oceanography

Marine & Coastal Mgmt., R. of S. Africa

Project Period

March 2001-February 2006

Level of Access

Open-Access Report

Grant Number


Submission Date



A field experiment is proposed, which will provide multi-year time series of salt, heat, and mass transports from the Agulhas retroflection region into the South Atlantic subtropical gyre. The program will deploy inverted echo sounders, both with and without pressure sensors and near-bottom current meters. The in situ data will be complemented with satellite data, both SST and altimetry. Historical data will also be included in the data analysis. The success of the program is based substantially on a new technique, GEM-ETTA, for analyzing IES (inverted echo sounder) and PIES (pressure and inverted echo sounder) data. Analysis of the field data in conjunction with reanalysis of historical data will provide the first long-term time series of these inter-basin fluxes on interannual scales.

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