ISSN:
1432-1394
Source:
Springer Online Journal Archives 1860-2000
Topics:
Architecture, Civil Engineering, Surveying
Notes:
Abstract Mean 5′ × 5′ heights and depths from ETOPO5U (Earth Topography at 5′ spacing Updated) Digital Terrain Model (DTM) were compared with corresponding quantities of a local DTM in the test area [38°≤ φ ≤ 40°, 21°≤ λ ≤ 24°]. From this comparison a shift of ETOPO5U with respect to the local DTM in the longitudinal direction equal to 5 min was found after applying an efficient fast Fourier transform (FFT) technique. Furthermore, sparse mean height differences larger than 1,000 m were observed between ETOPO5U and the local DTM due rather to errors of ETOPO5U. The effect of these errors on gravity and height anomalies was computed in a subregion of the area under consideration.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00819385
Permalink