Table 5 Statistics on the difference between marine gravity anomaly models and ship-borne gravity data at various distances from the coastline (mGal).

From: SDUST2023GRA_MSS: the new global marine gravity anomaly model determined from mean sea surface model

Model

Distances (km)

Number

Max

Min

Mean

STD

RMS

SDUST2023GRA_MSS

>0

6025014

99.54

−69.43

−0.01

4.31

4.31

>10

5851942

90.80

−43.31

−0.05

4.12

4.12

>20

5655561

46.76

−43.31

−0.09

3.97

3.97

>30

5463792

46.76

−43.31

−0.10

3.88

3.88

>40

5278874

46.76

−43.31

−0.09

3.81

3.81

>50

5098137

46.76

−43.31

−0.08

3.75

3.75

DTU17

>0

6025014

83.40

−99.35

0.03

4.35

4.35

>10

5851942

77.02

−89.09

−0.08

4.03

4.03

>20

5655561

47.51

−43.81

−0.13

3.81

3.81

>30

5463792

47.51

−43.81

−0.14

3.74

3.74

>40

5278874

47.51

−43.81

−0.14

3.69

3.69

>50

5098137

47.51

−43.81

−0.12

3.64

3.64

SIOV32.1

>0

6025014

80.63

−72.29

−0.03

4.24

4.24

>10

5851942

70.87

−66.79

−0.11

3.90

3.90

>20

5655561

49.34

−58.96

−0.14

3.65

3.66

>30

5463792

49.34

−43.38

−0.15

3.53

3.54

>40

5278874

49.34

−43.38

−0.17

3.45

3.46

>50

5098137

49.34

−43.38

−0.16

3.40

3.40