FOREWORD 



Under the general direction of Dr. H. U. Sverdrup of the Norsk Polarinstitutt, Oslo, Norway, 

 and the sponsorship ot the International Association of Physical Oceanography, a group of special- 

 ists in various fields of oceanography are preparing a comprehensive laboratory manual of oceano- 

 graphic methods. Section D, Processing Ashore, prepared by Mr. E. C. LaFond, head of the 

 Oceanography Section of the U.S. Navy Electronics Laboratory, is being issued as a separate 

 Hydrographic Office publication in advance of the rest of the series, in order to meet the growing 

 need for standarized procedures in working up oceanographic data. 



Drawing on his wide experience at the Scripps Institution of Oceanographv, La JoUa, Calif., 

 and more recently at the Navy Electronics Laboratory, San Diego, Mr. LaFond has devised tables 

 and procedures of his own for simplifying the reduction of the data of physical oceanography and 

 has assembled these together with the most expeditious methods now in use at other laboratories. 



The widespread adoption of the standard procedures described in this volume will contribute 

 materially to the advancement of oceanographv. 



A. HOBBS, 



Captain, U. S. Navy (Ret.), 



Hydrographer. 



