Particular thanks go to Dr. Ned A. Ostenso of the Geophysical and 

 Polar Research Center, who assisted in the organization of the field program 

 and encouraged the author to use this work as a thesis project; to Mr. John 

 J. Schule, Jr., Head of the Oceanographic Prediction Division of the Oceano- 

 graphic Office, whose continued interest in and support of this project made 

 it possible; and to Mr. William McCoraas of the same office who assisted in 

 much of the data collection. 



Thanks are also given to the following persons whose personal interest 

 and assistance in this project are greatly appreciated: at the Oceanographic 

 Office, Mr. Robert J. Beaton, Director, Nautical Chart Division; Mr. Albert 

 L. McCahan, Head, Gravity Branch; and Mr. Walter I. V/ittmann, Head, Arctic 

 Section. Appreciation is also expressed for the help provided by Dr. Max E. 

 Britton, Head of the Arctic Project at the Office of Naval Research, Mr. Max 

 C. Brewer, Director of the Arctic Research Laboratory, and Mrs. Elisabeth 

 niff of the Air Force Cambridge Research Laboratories. 



The author acknowledges with pleasure the assistance of colleagues at 

 the Oceanographic Office, particularly Dr. Lloyd Simpson, and Messrs. P. S. 

 DeLeonibus, Tim Barnett, Lionel Moskowitz, and David Arastutz who provided 

 much help during the project and critically reviewed the final manuscript. 



k2 



