[{"name":"oden-oso-2007-2008-bathymetry-1","title":"High-resolution bathymetry data from expedition OSO, Southern Ocean, 2007\u20132008","summary":"Multibeam bathymetry from areas in Southern Ocean waters off west Antarctica.\r\n\r\nHigh-resolution bathymetry data are commonly used to study, for example, general seafloor geology, glacial morphology, bottom habitats, and bottom current activities. The data were collected from Swedish icebreaker Oden during the Oden Southern Ocean (OSO) 2007\/08 expedition.\r\n\r\nThe bathymetry is acquired with a multibeam echo-sounder. The data are provided in the form of a compiled Digital Terrain Model with a grid cell size of 25\u2060\u200a\u2013\u200a\u2060100 m. The processing of the raw data was carried out using the Qimera software by QPS.","citations":"","comments":"The data were acquired in austral summer 2007\/08 from Swedish icebreaker (IB) Oden during the OSO 2007\/08 expedition. A Kongsberg EM122 1\u00b0\u2060\u200a\u00d7\u200a1\u00b0\u2060, 12 kHz, multibeam echo-sounder was hull-mounted in IB Oden. Position, heading and attitude data were received from a Kongsberg-Seatex Seapath 320 navigation unit (GPS and GLONASS) with attached MRU5 motion sensor. The exact speed of sound at the multibeam transducers was provided by a Valeport Mini SVS\/T sound speed and temperature sensor mounted in the sea-chest in Oden\u2019s hull, close to the multibeam transducer arrays. This was interfaced with the multibeam system directly. In addition, sound speed profiles for the entire water column were provided by CTD (Conductivity, Temperature, Depth) stations as well as XBT (Expendable Bathy Thermograph) probes.\r\n\r\n\r\nThe data were collected in a mixture of sea-ice conditions, ranging from 5\/10 to 8\/10 coverage. Navigation was provided by a Seatex Seapath 320 without local augmentation as this is not available in the area. Sound speed correction was done regularly using data from a Seabird 911+ CTD (conductivity, temperature depth) or Valeport SVP (sound velocity profiler).\r\n\r\n\r\nThe OSO 2007\/08 expedition started in Punta Arenas, Chile, and ended in McMurdo Station, Antarctica, and lasted from November 29, 2007, to January 7, 2008. The US National Science Foundation (NSF) chartered IB Oden from the Swedish Maritime Administration and the Swedish Polar Research Secretariat to break the ice outside the Antarctic station McMurdo by the Ross Sea.","category":"Marine","subcategory":"Bathymetry","keywords":"Geophysics; Southern Ocean; Bathymetry; Seafloor morphology; Multibeam; OSO 2007\/08 expedition; Icebreaker Oden","scientist":"Bj\u00f6rn Eriksson","firstname":"Martin","lastname":"Jakobsson","address":"Department of Geological Sciences; Stockholm University","postalcode":"SE-106 91","city":"Stockholm","province":"","country":"Sweden","parameters":"Earth science > Oceans > Bathymetry\/seafloor topography > Bathymetry","location":"Ocean > Southern Ocean","progress":"Completed","language":"English","project":"Oden Southern Ocean (OSO) 2007\/08 expedition","publisher":"Bolin Centre Database","version":"1","constrains":"","access":""}]