PREFACE 



The International Workshop on Low-Frequency Propagation and 

 Noise was held at the Woods Hole Oceanographic Institution, Woods 

 Hole, Massachusetts, from October 15 to 19, 1974. These Proceedings 

 consist of either author- supplied texts or edited versions of the 

 oral presentations and edited condensations of the discussions. In 

 the edited sections, the editors have made every effort to render 

 faithfully the essential content of the oral presentation or dis- 

 cussion. 



These Proceedings are presented in two volumes, each consisting 

 of 2 days of presented papers. Several of the original presentations 

 have been superceded by a published version, which the authors also have 

 submitted for publication here. In these cases, with the permission 

 of the authors and the publishers, the published articles are 

 reproduced here in facsimile. The presentations so rendered are 

 the following: 



i) Dr. Weinberg's paper appeared as NUSC Technical 

 Report 4867. 



ii) The presentation of Drs. Flatte and Munk contained 

 some of the information presented in the three 

 articles published in the Journal of the Acoustical 

 Society of America. 



iii) Dr. Raisbeck's paper appeared in the U. S. Navy 

 Journal of Underwater Acoustics. 



Ill 



