A note on the effect of bottom currents on an ocean bottom seismometer
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Abstract
Two three-component ocean bottom seismometers and a current meter were deployed a few hundred meters apart on the southern Blake Plateau off the United States eastern coast to study the effect of near-bottom currents on the background noise level of seismometers. Although analysis of the data is limited somewhat by instrumental problems, the increase in current speed, which ranged from 2 to 25 cm/sec, is correlated with a broadband increase in the noise level at frequencies below 10 Hz. Intermittent periods of narrow-band 8-Hz noise, which were also observed, are not correlative with bottom currents and were tentatively attributed to passing ships. Details of the mechanism of generation of the background noise cannot be determined from the present data set.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | A note on the effect of bottom currents on an ocean bottom seismometer |
| Series title | Bulletin of the Seismological Society of America |
| DOI | 10.1785/BSSA0750041195 |
| Volume | 75 |
| Issue | 4 |
| Year Published | 1985 |
| Language | English |
| Publisher | Seismological Society of America |
| Contributing office(s) | Coastal and Marine Geology Program, Woods Hole Coastal and Marine Science Center |
| Description | 10 p. |
| First page | 1195 |
| Last page | 1204 |
| Country | United States |
| Other Geospatial | Blake Plateau |
| Online Only (Y/N) | N |
| Additional Online Files (Y/N) | N |
| Google Analytic Metrics | Metrics page |