Applied marine geodetic research in polar regions

Hagen, Rick A.; Hinze, Heinrich; Monk, Jürgen; Niederjasper, Fred; Schenke, Hans Werner; Schöne, Tilo

doi:10.1080/15210609409379716

Cited by 3 publications

(2 citation statements)

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“…As sedimentation is a diverse process on the seafloor, depressions were often attributed to erroneous depth or position data; the occurrence of false elevations were not that easy to verify. The control and corrections were done visually and manually, except for multibeam data for which automatic error detection methods were used [Hagen et al, 1994]. Current developments in standardization at IHO [Rohde, 1996] will require a depth measurement accuracy s(d) for offshore areas or regions with depths greater than 200 m to be less than…”

Section: Data Validationmentioning

confidence: 99%

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The New Bathymetric Charts of the Weddell Sea: Awi Bcws

Schenke

Dijkstra

Niederjasper

et al. 2013

Ocean, Ice, and Atmosphere: Interactions at the Antarctic Continental Margin

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From data collected by RV Polarstern, and additional echosoundings provided by national hydrographic offices, research institutions and the InternationalHydrographic Organization (IHO) Digital Bathymetric Data Center, the 1:1,000,000 Bathymetric Chart of the Weddell Sea (AWI BCWS) series has been developed. The heterogeneity of bathymetric data and the lack of observations for ice-covered areas required the incorporation of supplementary geophysical and geographical information. A new semi-automatic procedure was developed for terrain modeling and contouring. In coastal regions, adjacent sub-glacial information was included in order to model the bathymetry of the transition zone along the Antarctic ice edge. Six sheets of the AWI BCWS series in the scale of 1:1,000,000 covering the southern Weddell Sea from 66°S to 78°S and from 68°W to 0°E were recently completed and included in the 1997 GEneral Bathymetric Chart of the Oceans (GEBCO) Digital Atlas CD-ROM. On the basis of these six 1:1,000,000 AWI BCWS sheets, a generalized l:3,000,000-scale bathymetric chart was compiled for the entire southern Weddell Sea. That chart is included in this volume and is described with regard to its significance to other disciplines.

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Section: Data Validationmentioning

confidence: 99%

“…A SeaBeam swath sonar system was installed in 1982 and used until it was replaced with the Hydrosweep/Deep Sea system in 1989. This sonar system has a 120° opening angle and a depth range from 10 to 10,000 m. In deep waters, AWI operates the system in the 90° mode [Hagen et al, 1994].…”

Section: Introductionmentioning

confidence: 99%