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Description:
GEOMED is a gravimetric geoid for the Mediterranean Sea,
covering the area 30° < lat < 47°, -5° < lon < 36° with
a grid spacing of 5' x 5'. The model refers to the GRS80 system. Three geoid
estimates were computed in the western, central and eastern Mediterranean Sea
using marine gravity anomalies. The gravimetric geoids were calculated by
remove-restore technique and fast collocation. To increase the overlapping
with the aim of obtaining a unique geoid over the Mediterranean area, two
additional geoid estimates centered on the edges of the original three solutions
were computed. All the partial solutions were computed by removing the OSU91A
global model from the data, apart from the western one which was based on OSU89B.
The merging of the solutions was performed by a simple weighted mean. OSU91A geoid
undulations were used to assign a value to grid knots inside the selected area but
outside the union of the five local estimates.
References:
D. Arabelos, R. Barzaghi, F. Sansò, G. Sona (1994). The gravimetric geoid and
the SST in the Eastern Mediterranean. In: D. Arabelos, I.N. Tziavos (eds.),
Mare Nostrum, Geomed Report 4, pp. 91-111, Ziti Publishing, Thessaloniki.
R. Barzaghi, G. Sona (1994). The geoid and the steady circulation pattern in the Mediterranean Sea.
IGeS Bulletin, 3, pp. 67-81.
Web of Science ID:
DRCI:DATA2014041004285938
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