High-resolution gravity and geoid models in Tahiti obtained from new airborne and land gravity observations: data fusion by spectral combination

Earth, Planets and Space

Table 7 Statistics of the differences between land gravity anomalies and modeled values from different combinations of gravity datasets (unit: mGal)

Model	Area	Max	Min	Mean	RMS	Standard deviation
1500+a+o	Tahiti	28.97	−57.76	−3.91	17.35	16.92
	Moorea	51.94	−15.12	16.14	23.77	17.56
	All	51.94	−57.76	−0.73	18.51	18.52
1500+a+o+t	Tahiti	30.01	−13.44	−1.44	9.40	9.44
	Moorea	24.72	−18.03	0.53	8.41	8.42
	All	30.01	−18.03	0.22	8.59	8.59
1500+a+o+t+l	Tahiti	4.44	−2.47	0.19	0.91	0.89
	Moorea	2.15	−3.19	0.02	0.93	0.92
	All	4.44	−3.19	0.16	0.91	0.90

Note: 1500 is the optimal degree of expansion of EGM08 and symbols a, o, t, and l represent gravity datasets from airborne survey, altimeter, RTM, and land survey