Bathymetry grids and maps of Mozambique Basin compiled from cruise SO183 bathymetry

Based on data from R/V Sonne multibeam sonar surveys in 2005 a high resolution bathymetry was generated for the Mozambique Basin. The area covers approx. 466,475 sqkm. The mapping area is divided into four sheets with boundaries (west/east/south/north): Sheet I (north-west), 37:00/39:45/-24:00/-20:20; Sheet II (north-east), 39:45/42:30/-24:00/-20:20; Sheet III (south-west), 37:00/39:45/-27:40/-24:00; Sheet IV (south-east), 39:45/42:30/-27:40/-24:00. Basic outcome of the investigation are Digital Terrain Models (DTM), one for each sheet with 0.05 arcmin (~91 meter) grid spacing and one for the entire area with 0.1 arcmin grid spacing. The DTM's were utilized for contouring and generating maps. Moreover the measured bathymetry was combined and compared with GEBCO bathymetry and predicted bathymetry, derived from altimeter satellites. The provided maps have a paper size of DIN A0 (1188.9 x 841 mm).

本数据集基于2005年“松内号”（R/V Sonne）多波束声呐勘测数据，为莫桑比克盆地生成了高分辨率水深地形数据，区域总面积约466475平方千米。制图区域划分为四幅图幅，各图幅边界按西/东/南/北顺序标注如下：第一幅（西北幅）：西经37°00′至东经39°45′、南纬24°00′至南纬20°20′；第二幅（东北幅）：东经39°45′至东经42°30′、南纬24°00′至南纬20°20′；第三幅（西南幅）：西经37°00′至东经39°45′、南纬27°40′至南纬24°00′；第四幅（东南幅）：东经39°45′至东经42°30′、南纬27°40′至南纬24°00′。本次调查的核心成果为数字地形模型（Digital Terrain Models, DTM）：每幅图幅对应一个网格间距为0.05弧分（约91米）的DTM，全区域则对应一个网格间距为0.1弧分的DTM。上述DTM被用于绘制等值线并生成专题地图。此外，本次实测水深数据还与GEBCO水深数据以及卫星高度计反演得到的预测水深数据进行了融合与对比。本次提供的地图采用DIN A0幅面，尺寸为1188.9×841毫米。