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GEOREF RECORD

A worldwide storm of microseisms with periods of about 27 seconds

Jack Oliver
A worldwide storm of microseisms with periods of about 27 seconds
Bulletin of the Seismological Society of America (1962) 52 (3): 507-517

Index Terms/Descriptors
Abstract

On June 6, 1961, a storm of microseisms with periods of about 27 sec and a duration of about 8 hrs was detected by long period seismographs throughout the world. At Palisades, ultra-sensitive seismographs detected the storm for an interval of about 2 days during which the periods of the waves decreased from about 28 to about 20 sec. The seismic waves appear to be largely of the Rayleigh type and seem to originate in the southern or equatorial Atlantic Ocean. The favored hypothesis on the nature of the source mechanism suggests that the seismic waves were generated by dispersed ocean waves striking the coast of the Gulf of Guinea. A second hypothesis suggests that the microseisms are a form of harmonic tremor associated with magmatic activity beneath the South Atlantic Ocean.


ISSN: 0037-1106
EISSN: 1943-3573
Coden: BSSAAP
Serial Title: Bulletin of the Seismological Society of America
Serial Volume: 52
Serial Issue: 3
Title: A worldwide storm of microseisms with periods of about 27 seconds
Author(s): Oliver, Jack
Pages: 507-517
Published: 1962
Text Language: English
Publisher: Seismological Society of America, Berkeley, CA, United States
Accession Number: 1962-006909
Categories: Seismology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus., table
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from Bibliography and Index of North American Geology, U. S. Geological Survey, Reston, VA, United States
Update Code: 1962
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