Description:
The geoid of Tanzania, bounded by lat: 14S-1N and lon: 27E-42E,
was determined at a resolution grid of 5 minutes of arc. The GRS80 reference system was used.
The data used included the EIGEN-GRACE02S geopotential model up to degree and order 120, a
terrestrial gravity data anomaly set, marine (ship track) gravity and satellite radar altimetry
data. A digital terrain model derived from SRTM was also used to compute topographical effects.
The spherical one-dimensional FFT method was used to compute the geoid heights residual to the
geopotential model. Internal error propagation was used to get a pessimistic accuracy estimate of 30 cm.
References:
J.G. Olliver (2007). The Gravimetric geoid of Tanzania. Survey Review, 39(305),
pp. 212-225. DOI: 10.1179/003962607X165186
Web of Science ID:
DRCI:DATA2018029012462783
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