CONTENTS
FOREWORD - --------------- 2-0-0 rrr e rere rn ern rere eee e eee
ABSTRACT - ------------------------ 2-22 ---- -- - -eee
PREPACE- ----------------------------------------------------
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CHAPTER 1 INTRODUCTION- -------------------------------------- 13
1.1
Objectives- ---------------------+------------ +e ee ee eee
1.2 Background------------+-------------------- 2 ee eee eee eee
1.3 Theory --------------+------ eee ee ee ee ee ee ee ee ee ee eee
1.4 Regort Organization ----------------------------------------1.5 Oceanographic and Background Radioactivity Survey--------------------
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CHAPTER 2 OCEANOGRAPHIC FALLOUT SURVEY----------------------- 15
2.1 Objectives---------+-------------- 2-2 ee ee ee ee ee ee ee eee
2.2 Background - -------------------------- eee eee ee eee eee
2.3 Theory --------- +--+ 2-2 eee ee ne ee ee ee ee ee ee ee eee eee
2.3.1 Dose Rate----------------------- 2-2 ---- ee eee eee eee
2.3.2 Decay Coefficient- ----------------+-----------------------
2.3.3 Current Drift ---------------------+-----------+---------
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2.4 Operations ----------------------+---------------- 2 -- eee 17
2.4.1 Survey Vessel------------------------------- eee ee eee 17
2.4.2 Control Center ----------------------- ee eee e eee eee eee 17
2.4.3
Procedures- ----------------- 22-2 2-222 ee ee ee ee ee eee
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2.5.2
2.5.3
Towing Cable ---------------------+--------------------Recorders --------------------2------ ++ ++ ee ee eee eee
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2.5 Instrumentation -----------------~-------------------------- 18
2.5.1 Underwater Detector Probe ---------------+--------------+-+--- 18
2.5.4 Calibration of Probe- ---------------++----+----------+-----e
2.5.5 Nav-Rad Instruments ---------------+---------2----------2.5.6 Water Sampling - --------------------------------------ee
2.5.7 Marker Drogues --------------------------- errr rere
2.5.8 Decay Tank-------------------+----------- oer eee eee
2.5.9 Penetration Recorder for Deep-Moored Stations - -----------------2.6 Results and Discussion ---------------------------- seo eee
2.6.1
Nav-Rad Device-------------------------------- eee eee
2.6.2 Ship Surveys ------------------------------ rect errre rns
2.6.3 Reliability of Probe Measurements - - - ---------------r- rrr tren
2.6.4 Instrument Contamination -----------------+---------- rere -e
2.6.5 Penetration Meter ---------------+--- 2-23 ee rere
2.6.6 Probe Penetration Depth - ------------------------ crt reer
2.6.7 Rate of Penetration ------------------------ eee -- ee ee eee
2.6.8 Fallout Time of Arrival --------------- 2c cre et rece creer
2.6.9 Deduced Ocean Currents - ----------------------- ee rr ree
2.6.10 Corrected Ships’ Tracks - ------------------ +2 r errr re rene
2.6.11 Water Sampling -------------------- err cr cere rrr ert ere
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