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| Titel: |
Pressure and temperature measurements on seamounts in the North Pacific |
| Auteur: |
Crawford, W. R. Rapatz, W. J. Huggett, W. S. |
| Verschenen in: |
Marine geodesy |
| Paginering: | Jaargang 5 (1981) nr. 1 pagina's 43-54 |
| Jaar: |
1981 |
| Inhoud: |
In 1974 and 1975 pressure gauges were placed on and records recovered from Union Seamount (49°35'N, 132°47'W), Bowie Seamount (53°18'N, 135°37'W), and Surveyor Seamount (56°08'N, 144°22'W) in the Northeast Pacific in depths of 314, 170, and 630 m, respectively. These records have been analyzed to derive harmonic constituents, and co-phase and co-amplitude charts have been prepared for the neighboring regions. Maximum tidal range observed was 4 m. The temperature recorded by the gauge on Surveyor Seamount revealed a predominantly semidiurnal signal of range 0.1 Celsius degree, which represents a vertical displacement of the water column of up to 50 m. Significant diurnal oscillations are not present in the temperature record. The pressure record at Union Seamount was low-pass filtered to attenuate tidal signals. The residual pressure fluctuations at Union Seamount were up to 12 mbars in range, about one fifth of the range of the local sea-level atmospheric pressure fluctuations. The ocean surrounding Union Seamount behaves largely as an inverted barometer, with evidence of an undershoot at periods near four days. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 11 van 13 gevonden artikelen
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