Deirdre A. Byrne               D. Randolph Watts 
       School of Marine Sciences      Graduate School of Oceanography 
       University of Maine            University of Rhode Island
       Orono, ME 04469-5741 USA       Narragansett, RI 02882, USA
       dbyrne@umeoce.maine.edu        rwatts@gso.uri.edu

       Donna L. Witter                Silvia. L. Garzoli
       Dept. of Geology               NOAA/AOML
       Kent State University          4301 Rickenbacker Cswy.
       Kent, OH 44242                 Miami, FL 33149-1097, USA
       dwitter@kent.edu               garzoli@aoml.noaa.gov

• Abstract
• Background and Scientific Goals (Fig. 1)
• Introduction to ASTTEX (Fig. 2)
• The GEM-ETTA Method (Fig. 3)
• GEM-ETTA Parameterization Results (Fig. 4)
• ASTTEX Information Flowchart (Fig. 5)
• Retrospective Work with BEST Data: Results (Fig. 6)
• Topex/BEST Timeseries Correlations (Fig. 7)
• Processed BEST Timeseries (Fig. 16)
 

Raw Data Records (Figs. 8-15)
Echo Sounder Data	IES 56	IES 58	IES 59	IES 61	IES 62
Bottom Pressure Data	N/A	BP 58	N/A	BP 61	BP 62

• Referencing acoustic travel time to a common pressure level (Fig. 17)
• Simulated vs. In Situ Parameter Comparison (Fig. 18)
• Preliminary validation of the GEM-ETTA method (Fig. 19)
• GEM-ETTA Thermohaline Timeseries for SN 62 (Fig. 20)
• GEM-ETTA Thermohaline Timeseries for SN 59 (Fig. 21)
• Discussion and Conclusions
• Appendices A and B
• References and Acknowledgments