High-resolution swath mapping, using multibeam echo sounder was used to delineate the seabed morphology around Madang ,Papua New guinea at the maximum depth coverage in the lagoon of 50 m at the entrance around the southern end,near the main harbour.
This report describes the high-resolution bathymetric mapping survey carried out in 2004. The survey achieved good coverage of the seafloor from approximately 10 m depth in the nearshore reef slope area, to an average offshore depth of some 2000 m, at an average slope angle of 2. The objective was to investigate the seabed and provide information about water depths around the islands using a multibeam echosounder (MBES).
The main objective of this study were to;
* map the bathymetry of Vaiusu bay dredge sites
* deploy instrumentation to measure water levels ad existing current regimes
* provide an estimate on volumes of materials to be excavated for marina and access channels