3D high-resolution numerical modelling of altimetry-derived marine gravity data

Table 3 Statistics of the altimetry-derived gravity disturbances obtained from the FVM solution, gravity disturbances achieved from the GRAV-D airborne gravimetry, and of their residuals (all characteristics considered only for offshore data)

Area	Points	Tracks altitudes [km]		Gravity disturbances [mGal]					Residuals (FVM-GRAV-D) [mGal]
Area	Points	Min	Max	Source	Min	Max	Mean	StD	Min	Max	Mean	StD
Alaska	7,936,519	5.5	11.0	FVM	− 134.2	149.1	14.6	48.0	− 49.5	40.6	− 1.59	3.06
Alaska	7,936,519	5.5	11.0	GRAV-D	− 138.9	290.4	16.2	47.7	− 49.5	40.6	− 1.59	3.06
West Coast	315,936	5.9	7.6	FVM	− 84.9	27.5	− 35.6	15.6	− 21.2	12.7	− 0.98	2.59
West Coast	315,936	5.9	7.6	GRAV-D	− 82.4	37.9	− 34.6	15.3	− 21.2	12.7	− 0.98	2.59
East Coast	1,099,792	5.1	7.4	FVM	− 135.2	80.4	− 19.8	25.1	− 19.2	35.4	− 0.89	2.63
East Coast	1,099,792	5.1	7.4	GRAV-D	− 133.0	75.2	− 19.0	24.9	− 19.2	35.4	− 0.89	2.63
Gulf of M. (west)	233,461	10.5	11.3	FVM	− 74.8	30.1	− 9.6	21.8	− 37.4	35.1	1.18	3.40
Gulf of M. (west)	233,461	10.5	11.3	GRAV-D	− 83.3	43.4	− 10.8	21.6	− 37.4	35.1	1.18	3.40
Gulf of M.(east)	205,691	6.2	7.4	FVM	− 81.3	47.3	− 2.4	22.8	− 15.5	11.4	− 2.02	2.99
Gulf of M.(east)	205,691	6.2	7.4	GRAV-D	− 81.4	52.8	− 0.4	22.7	− 15.5	11.4	− 2.02	2.99
Puerto Rico	116,208	11.1	11.3	FVM	− 313.8	74.4	− 86.7	90.9	− 7.5	6.8	2.18	1.63
Puerto Rico	116,208	11.1	11.3	GRAV-D	− 314,1	72,7	− 88.8	90.0	− 7.5	6.8	2.18	1.63