CONTENTS 



Foreword iii 



Editor's Preface v 



Moderator's Comments 1 



Sketch of the History of Microseismology 3 



Tripartite Stations and Direction of Approach of Microseisms 9 



Amplitude Distribution of Storm Microseisms 20 



Microseismic Period Spectra and Related Problems in the 



Scandinavian Area 56 



Can Sea Waves Cause Microseisms 74 



Storm and Surf Microseisms 94 



The Ocean as an Acoustic System 109 



On the Theories of Microseisms 114 



