UNIVERSITY OF CALIFORNIA, SAN DIEGO BERKELEY • DAVIS • IRVINE • LOS ANGELES • RIVERSIDE • SAN DIEGO • SAN FRANCISCO SANTA BARBARA • SANTA CRUZ SCRIPPS INSTITUTION OF OCEANOGRAPHY POST OFFICE BOX 109 LA JOLLA, CALIFORNIA 92038 November 6, 1968 Mr. Robert L. Pyle Field Director Smithsonian Institution Pacific Program P. O. Box 8095 Honolulu, Hawaii - 96815 Dear Mr. Pyle: Enclosed are BT cards for cruises 14994, REXBURG, and 14995, MARYSVILLE, together with IBM listing of the data, template and explanation sheet to assist you in interpreting the listing. You may retain the templet and explanation sheet to be used with future listings. I am sorry for the delay in forwarding these BT cards to you but over the past few months we have been debugging our new digitizer and the computer programs associated with it. There have been some unavoidable delays in completing the data processing. We had considerable difficulty in determining a temperature correction for the data taken on the MARYSVILLE. The relationship between the injection reference temperatures and BT readings was so erratic that it was almost impossible to make any sense out of them. However, by making a comparison with the deep temperatures on the REXBURG cruise and temperatures at 150 and 200 meters in the CALCOFT data in the same area, we finally concluded that a -3.2°F correction would be the most reasonable. With this correction, the surface temperature distribution agrees also with the BCF temperatures for the same period in that area. Also, the existence of a cold tongue extending southwest from Pt. Conception appears in both of these distributions. I hope this explanation will assist you in interpreting the data. Sincerely yours, [illegible] Margaret K. Robinson Bathythermograph Section MKR:ed encl. cc: (Smithsonian Inst., Washington, D.C. (w/BT cards; w/o listing, templet & explanation sheet.