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[Hydro-oceanographic Survey at Raja Ampat Waters, West Papua, Indonesia] Raja Ampat archipelago is one of the major tourism destinations in Indonesia and a nature conservation area. This is due to the abundance of biodiversity, natural features and resources, as well as culture. In 2014, the Indonesian government organized Sail Raja Ampat as a promotion program for the development of Raja Ampat. Badan Pengkajian dan Penerapan Teknologi (BPPT) took part in the event by using RV Baruna Jaya IV to perform a marine survey and technological dissemination activity. This study is aimed to describe hydro-oceanographic survey activity at the Raja Ampat
waters as a part of the Sail Raja Ampat. The survey was conducted at the two main areas: Teluk Kabui and Selat Sagewin. Results indicate that the survei has successfully revealed morphological features in both areas. The bathymetry shows that Teluk Kabui has a bathymetry depth of 18 – 53 meters, while the bathymetry of Selat Sagewin is about 104 – 508 meters. The average temperature of the region is approximately 29.2? – 30.5?C with a salinity of 31 - 34 psu. Lithological features as sandstones, limestones, and clays were also obtained. Those results and data are useful to complement the existing data and to future research activities. In addition, the data could also be used to evaluate the natural characteristics of Raja Ampat waters and to support the development activity in that area.
Keywords: Raja Ampat, hydrography, oceanography, multibeam, CTD, sub bottom profiler
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