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GEOPHYSICAL RESEARCH LETTERS, VOL. 22, NO. 16, PAGES 2175–2178, 1995

Geometrical Determination of the Love Number h 2 at four Tidal Frequencies

R. D. Ray

NASA/GSFC, Code 926, Greenbelt, MD, 20771; ray@ahab.gsfc.nasa.gov.


S. Bettadpur

University of Texas, Center for Space Research, Austin, TX 78712-1085.


R. J. Eanes

University of Texas, Center for Space Research, Austin, TX 78712-1085.


E. J. O. Schrama

Faculty of Geodetic Engineering, Delft University of Technology, 2629 JA Delft, The Netherlands.


Abstract

The Love number h 2 is determined at the M2, N2, O1, and K1 frequencies by combining satellite altimetry with in situ ocean tidal measurements. Topex/Poseidon altimetry is used to measure the (ocean + earth) tide, while gauges at 114 island and ocean-bottom sites determine the ocean tide; the difference sets constraints on h 2. Our h 2 standard errors are somewhat larger than recent VLBI estimates, but they clearly delineate the resonance in K1 at the 6-σ level.

Received 29 December 1994; accepted 2 May 1995.

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Citation: Ray, R. D., S. Bettadpur, R. J. Eanes, and E. J. O. Schrama (1995), Geometrical Determination of the Love Number h 2 at four Tidal Frequencies, Geophys. Res. Lett., 22(16), 2175–2178.