caa a22 4500 445364882 CHVBK 20180317142927.0 cr unu---uuuuu 170323e20111201xx s 000 0 eng 10.1007/s11001-011-9141-1 doi (NATIONALLICENCE)springer-10.1007/s11001-011-9141-1 Gridding heterogeneous bathymetric data sets with stacked continuous curvature splines in tension [Elektronische Daten] [Benjamin Hell, Martin Jakobsson] Gridding heterogeneous bathymetric data sets for the compilation of Digital bathymetric models (DBMs), poses specific problems when there are extreme variations in source data density. This requires gridding routines capable of subsampling high-resolution source data while preserving as much as possible of the small details, at the same time as interpolating in areas with sparse data without generating gridding artifacts. A frequently used gridding method generalizes bicubic spline interpolation and is known as continuous curvature splines in tension. This method is further enhanced in this article in order to specifically handle heterogeneous bathymetric source data. Our method constructs the final grid through stacking several surfaces of different resolutions, each generated using the splines in tension algorithm. With this approach, the gridding resolution is locally adjusted to the density of the source data set: Areas with high-resolution data are gridded at higher resolution than areas with sparse source data. In comparison with some of the most widely used gridding methods, our approach yields superior DBMs based on heterogeneous bathymetric data sets with regard to preserving small bathymetric details in the high-resolution source data, while minimizing interpolation artifacts in the sparsely data constrained regions. Common problems such as artifacts from ship tracklines are suppressed. Even if our stacked continuous curvature splines in tension gridding algorithm has been specifically designed to construct DBMs from heterogeneous bathymetric source data, it may be used to compile regular grids from other geoscientific measurements. Springer Science+Business Media B.V., 2011 Gridding nationallicence Interpolation nationallicence Digital bathymetric model nationallicence Seafloor topography nationallicence Bicubic splines in tension nationallicence Hell Benjamin Department of Geological Sciences, Stockholm University, 10691, Stockholm, Sweden aut Jakobsson Martin Department of Geological Sciences, Stockholm University, 10691, Stockholm, Sweden aut Marine Geophysical Research Springer Netherlands 32/4(2011-12-01), 493-501 0025-3235 32:4<493 2011 32 11001 https://doi.org/10.1007/s11001-011-9141-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11001-011-9141-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hell Benjamin Department of Geological Sciences, Stockholm University, 10691, Stockholm, Sweden aut NATIONALLICENCE 700 1- Jakobsson Martin Department of Geological Sciences, Stockholm University, 10691, Stockholm, Sweden aut NATIONALLICENCE 773 0- Marine Geophysical Research Springer Netherlands 32/4(2011-12-01), 493-501 0025-3235 32:4<493 2011 32 11001 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer