The authors sincerely thank the captain, Frank Robben, and crew of Kialoa II for their support, skill, and patience in this ambitious field program. We are particularly grateful to Rita Klabacha from L. Armi’s lab at SIO, who expertly managed the seagoing program from Vilamoura and on each of the trips onboard Kialoa II. We also gratefully acknowledge the students and staff from the Oceanography Group at the University of Lisbon, particularly Fátima Sousa, without whose help this project would not have been possible. The efforts and persistence of the WHOI Float Operations Group, particularly Jim Valdes, helped make this program a success. We thank Walter Zenk of IfM (Kiel, Germany) and Michel Ollitrault from Ifremer (Brest, France) for collaborating on sound source deployments. Thanks go also to Jim Luyten and the SeaSoar Group at WHOI for use of a CTD for the initial survey cruise. Detailed bathymetry was kindly provided by the Departamento de Geologia Marinha, Instituto Geológico e Mineiro, Portugal. This work is being sponsored by the National Science Foundation through Grant OCE- 9101033 to the Woods Hole Oceanographic Institution and Grant OCE-9100724 to Scripps Institution of Oceanography, and by the Luso-American Foundation for the Development—FLAD, through Grant 54/93 to the University of Lisbon.
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