[{"name":"oden-oso-2010-bathymetry-1","title":"High-resolution bathymetry data from expedition OSO, Southern Ocean, 2010","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) 2009\/10 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 15\u2060\u200a\u2013\u200a\u2060100 m. The processing of the raw data was carried out using the Qimera software by QPS.","citations":"Jakobsson M, Anderson JB, Nitsche FO, Dowdeswell JA, Gyllencreutz R, Kirchner N, O\u2019Regan MA, Alley RB, Anandakrishnan S, Mohammad R, Eriksson B, Fernandez R, Kirshner A, Minzoni R, Stolldorf T, Majewski W (2011) Geological record of Ice Shelf Breakup and Grounding Line Retreat, Pine Island Bay, West Antarctica. Geology 39:691\u200a\u2013\u200a\u2060694. doi:10.1130\/G32153.1\n\nJakobsson M, Anderson JB, Nitsche FO, Gyllencreutz R, Kirshner AE, Kirchner N, O'Regan M, Mohammad R, Eriksson B (2012) Ice sheet retreat dynamics inferred from glacial morphology of the central Pine Island Bay Trough, West Antarctica. Quaternary Science Reviews 38:1\u200a\u2013\u200a\u206010. doi:10.1016\/j.quascirev.2011.12.017\n\nGraham AGC, Jakobsson M, Nitsche FO, Larter RD, Anderson JB, Hillenbrand C-D, Gohl K, Klages JP, Smith JA, Jenkins A (2016) Submarine glacial-landform distribution across the West Antarctic margin, from grounding line to slope: the Pine Island\u2013Thwaites ice-stream system. Geological Society, London, Memoirs 46, 493\u2060\u200a\u2013\u200a\u2060500. doi:10.1144\/M46.173\n\nWise MG, Dowdeswell JA, Jakobsson M, Larter RD (2017) Evidence of marine ice-cliff instability in Pine Island Bay from iceberg-keel plough marks. Nature 550:506\u200a\u2013\u200a\u2060510. doi:10.1038\/nature24458","comments":"The data were acquired in austral summer 2009\/10 from Swedish icebreaker (IB) Oden during the OSO 2009\/10 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 2009\/10 expedition started in McMurdo Station, Antarctica, and ended in Punta Arenas, Chile, and lasted from February 8 to March 12, 2010. IB Oden was chartered by the US National Science Foundation (NSF) to break an ice channel to the McMurdo station on the Ross Sea, to enable researchers to conduct trans-disciplinary studies in the Antarctic region. On the voyage back to South America, the icebreaker served as a research platform for the OSO expedition.","category":"Marine","subcategory":"Bathymetry","keywords":"Geophysics; Southern Ocean; Bathymetry; Seafloor morphology; Multibeam; OSO 2009\/10 expedition; Icebreaker Oden","scientist":"Bj\u00f6rn Eriksson, Nina Kirchner, Frank Nitsche, Rezwan Mohammad, Richard Gyllencreutz","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) 2009\/10 expedition","publisher":"Bolin Centre Database","version":"1","constrains":"","access":""}]