Acknowledgement. This analysis is supported by the Danish Space Board. Thanks to ESA for
putting the ERS-l satellite into the geodetic mission and to D-P AF for preparing the OPR data
References.
Aas, E.: De Norske Farvann. Institutt for Geofysikk, Oslo, 1994.
Andersen O. B. and P. Knudsen: Global altimetric gra\ity map from the ERS-I geodetic
mission (cycle I). Earth Obs. Quarterly, 47, 1-5, 1995.
Forsberg, R, and D. Solheim: Performance of FFf methods in local gra\iry field modelling.
Proc. Chapman Conference on Progress in the Determination of the Earths Gravity
Field, Am. Geophys. Union, 100-103, 1988.
Knudsen, P.: Estimation and Modelling of the Local Empirical Covariance Function using
gravity and satellite altimeter data. Bull. Geodesique. 61. 145-160. 1987.
Knudsen, P.: Determination of local empirical covariance functions from residual terrain
reduced altimeter data Reports of the Dep. of Geodetic Science and Surveying no. 395,
The Ohio State University, Columbus, 1989.
Knudsen, P.: Integration of Altimetry and Gravimetry by Optimal Estimation Techniques. In
Altimetry in Geodesy and Oceanography, edited by RRummel & F.Sanso, Lecture
Notes in Earth Sci., 50, Springer Verlag, 453-466.1993.
Knudsen, P., O.Ba Andersen and C.C. Tscherning: Altimeuic gra\ity anomalies in the
Norwegian-Greenland Sea - Preliminary Results from the ERS-l 35 days repeat mission.
Geophys. Res. Lett., 19(17), 1795-1798, 1992.
Moritz, H.: Advanced Physical Geodesy. H.Wichmann Verlag. Karlsruhe. 1980.
Rapp, RH.: Detailled Gravity Anomalies and Sea Surface Heights derived from
GEOS-3/SEASAT Altimeter Data Rep. of the Dep. ofGeod Sci. and Surveying, No.
365, The Ohio State Univ., Columbus, 1985.
Rapp, R.H.: Gra\-ity anomalies and sea surface heights derived from a combined
Geos-3/SEASAT altimeter data set. J.Geoph.Res .•. 91. 4867-4876. 1986.
Rapp, RH., Y.M. Wang and N.K. Pavlis: The Ohio State 1991 Geopotential and Sea Surface
Topography Harmonic Coefficient Models. Rep. of the Dep. of. Science and Surv. 410,
Ohio State Univ., Columbus, 1991.
Rummel, R. & RH.N. Haagmans: Gravity gradients from satellite altimetry. Mar. Geodesy,
14, 1-12, 1990.
Sandwell, D. T.: A Detailed View of the South Pacific Geoid From Satellite Altimetry. J.
Geophys. Res., 89, 1089-1105, 1984.
Sandwell, D.T. & W.H. Smith: Global Marine Gravity Field From ERS-l. Geosat and Seasat.
Scripps Institute of Oceanography, La Jolla, CA, 1992.
Tscherning, c.c., P. Knudsen and R Forsberg: Description of the GRA VSOFT package.
Geophysical Institute, University of Copenhagen. Technical Report. 1991, 2nd. Ed.
1992,3. Ed. 1993,4. ed, 1994.
Tscherning, c.c., R. Forsberg and P. Knudsen: The GRA VSOFT package for geoid
determination. Proc. First Continental Workshop on the Geoid in Europe. Prague,
327-334. Prague, 1992.
Tscherning, c.c. and RH. Rapp: Oosed Covariance Expressions for Gravity Anomalies,
Geoid lindulations, and Deflections of the Vertical Implied by Anomaly Degree
Variances. Rep208, Dept. ofGeod. Sci. Surv., The Ohio State Univ .• Columbus, 1974.
Zhang, C, & lA.R Blais: Comparison of methods for marine gra\ity determination from
satellite altimetry data in the Labrador Sea Bulletin Geodesiqoe. 69(3), 173-180, 1995.
226
putting the ERS-l satellite into the geodetic mission and to D-P AF for preparing the OPR data
References.
Aas, E.: De Norske Farvann. Institutt for Geofysikk, Oslo, 1994.
Andersen O. B. and P. Knudsen: Global altimetric gra\ity map from the ERS-I geodetic
mission (cycle I). Earth Obs. Quarterly, 47, 1-5, 1995.
Forsberg, R, and D. Solheim: Performance of FFf methods in local gra\iry field modelling.
Proc. Chapman Conference on Progress in the Determination of the Earths Gravity
Field, Am. Geophys. Union, 100-103, 1988.
Knudsen, P.: Estimation and Modelling of the Local Empirical Covariance Function using
gravity and satellite altimeter data. Bull. Geodesique. 61. 145-160. 1987.
Knudsen, P.: Determination of local empirical covariance functions from residual terrain
reduced altimeter data Reports of the Dep. of Geodetic Science and Surveying no. 395,
The Ohio State University, Columbus, 1989.
Knudsen, P.: Integration of Altimetry and Gravimetry by Optimal Estimation Techniques. In
Altimetry in Geodesy and Oceanography, edited by RRummel & F.Sanso, Lecture
Notes in Earth Sci., 50, Springer Verlag, 453-466.1993.
Knudsen, P., O.Ba Andersen and C.C. Tscherning: Altimeuic gra\ity anomalies in the
Norwegian-Greenland Sea - Preliminary Results from the ERS-l 35 days repeat mission.
Geophys. Res. Lett., 19(17), 1795-1798, 1992.
Moritz, H.: Advanced Physical Geodesy. H.Wichmann Verlag. Karlsruhe. 1980.
Rapp, RH.: Detailled Gravity Anomalies and Sea Surface Heights derived from
GEOS-3/SEASAT Altimeter Data Rep. of the Dep. ofGeod Sci. and Surveying, No.
365, The Ohio State Univ., Columbus, 1985.
Rapp, R.H.: Gra\-ity anomalies and sea surface heights derived from a combined
Geos-3/SEASAT altimeter data set. J.Geoph.Res .•. 91. 4867-4876. 1986.
Rapp, RH., Y.M. Wang and N.K. Pavlis: The Ohio State 1991 Geopotential and Sea Surface
Topography Harmonic Coefficient Models. Rep. of the Dep. of. Science and Surv. 410,
Ohio State Univ., Columbus, 1991.
Rummel, R. & RH.N. Haagmans: Gravity gradients from satellite altimetry. Mar. Geodesy,
14, 1-12, 1990.
Sandwell, D. T.: A Detailed View of the South Pacific Geoid From Satellite Altimetry. J.
Geophys. Res., 89, 1089-1105, 1984.
Sandwell, D.T. & W.H. Smith: Global Marine Gravity Field From ERS-l. Geosat and Seasat.
Scripps Institute of Oceanography, La Jolla, CA, 1992.
Tscherning, c.c., P. Knudsen and R Forsberg: Description of the GRA VSOFT package.
Geophysical Institute, University of Copenhagen. Technical Report. 1991, 2nd. Ed.
1992,3. Ed. 1993,4. ed, 1994.
Tscherning, c.c., R. Forsberg and P. Knudsen: The GRA VSOFT package for geoid
determination. Proc. First Continental Workshop on the Geoid in Europe. Prague,
327-334. Prague, 1992.
Tscherning, c.c. and RH. Rapp: Oosed Covariance Expressions for Gravity Anomalies,
Geoid lindulations, and Deflections of the Vertical Implied by Anomaly Degree
Variances. Rep208, Dept. ofGeod. Sci. Surv., The Ohio State Univ .• Columbus, 1974.
Zhang, C, & lA.R Blais: Comparison of methods for marine gra\ity determination from
satellite altimetry data in the Labrador Sea Bulletin Geodesiqoe. 69(3), 173-180, 1995.
226