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Detailed Reference Information |
Zürn, W., Beaumont, C. and Slichter, L.B. (1976). Gravity tides and ocean loading in southern Alaska. Journal of Geophysical Research 81: doi: 10.1029/JB081i026p04923. issn: 0148-0227. |
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Short tidal gravity series were recorded at five stations in Alaska between latitudes of 61¿ and 65¿N with a LaCoste earth tide meter. Gravimetric factors for semidiurnal tides are anomalously small by an average of 15%, whereas diurnal tides have gravimetric factors too large by an average of 2.5%. The corresponding phase lags are between 4¿ and -5¿ for semidiurnal tides and between 0¿ and -4¿ for diurnal tides. The ocean load effects were computed for the M2 and O1 tides from cotidal charts. The ocean load tides explain more than 80% of the discrepancy between the theoretically predicted earth tide and the observations. Finite element calculations demonstrate that the residuals cannot be explained by geological structure associated with the downgoing lithospheric slab beneath Alaska. |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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