The authors wish to thank the technical staff of RD Instruments between 1989 and 1992 that was involved in the development of this prototype scintillation instrument through an SBIR grant by ONR. We are grateful to Drs. J. R. Delaney and R. E. MacDuff for generously providing dive time on the DSV Alvin to deploy the instruments on Endeavour Ridge, and to them and Dr. V. Robigou for their advice and assistance through out the hydrothermal vent project. Special thanks are due to Dr. R. E. Thomson for his advice and encouragement and for making ship time available to deploy and recover the instrumentation on CCGS Parizeau. Thanks to Dr. K. Payne for producing the Endeavour vent field figure. Also, special thanks to Dr. D. M. Farmer who donated the instrument to the first author for the Bosporus Strait research. SACLANT Undersea Research Centre supported the Bosporus research while Di Iorio was employed with them. Special thanks to the technical staff of SACLANTCEN and, in particular, Dr. T. Akal, engineer P. Guerrini, and R. Della Maggiore who assisted with the mooring design, deployment, and recovery along with the ship crew on the NATO R/V Alliance.
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