CONTENTS 



Page 



I. INTRODUCTION I 



II. SURVEY OPERATIONS 



A. Conduct of Survey 4 



1. Norwegian Sea - New York 4 



2. New York - Norwegian Sea 5 



B. Control 5 



C. Instrumentation 6 



III. DATA PROCESSING 



A. Preliminary Data Processing 7 



B. Magnetic Temporal Variations 7 



IV. DATA PRESENTATION 



PART I: NORWEGIAN SEA - NEW YORK (FIGS. 2-30) .... 11 



PART II: NEW YORK - NORWEGIAN SEA (FIGS. 31-60) ... 43 



TABLE 



TABLE I. GAMMA RANGES FOR K- INDICES 9 



