[{"name":"oden-lomrog-2012-bathymetry-1","title":"High-resolution bathymetry data from expedition LOMROG III, Lomonosov Ridge, Arctic Ocean, 2012","summary":"Multibeam bathymetry from areas in the central Arctic Ocean, around the North Pole and along the Lomonosov Ridge towards Northern Greenland.\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 Lomonosov Ridge off Greenland (LOMROG III) 2012 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 100 m. The processing of the raw data was carried out using the Qimera software by QPS.","citations":"Jakobsson M, Mayer LA, Bringensparr C, Castro CF, Mohammad R, Johnson P, Ketter T, Accettella D, Amblas D, An L, Arndt JE, Canals M, Casamor JL, Chauch\u00e9 N, Coakley B, Danielson S, Demarte M, Dickson M-L, Dorschel B, Dowdeswell JA, Dreutter S, Fremand AC, Gallant D, Hall JK, Hehemann L, Hodnesdal H, Hong J, Ivaldi R, Kane E, Klaucke I, Krawczyk DW, Kristoffersen Y, Kuipers BR, Millan R, Masetti G, Morlighem M, Noormets R, Prescott MM, Rebesco M, Rignot E, Semiletov I, Tate AJ, Travaglini P, Velicogna I, Weatherall P, Weinrebe W, Willis JK, Wood M, Zarayskaya Y, Zhang T, Zimmermann M, Zinglersen KB, (2020) The International Bathymetric Chart of the Arctic Ocean Version 4.0. Scientific Data 7:176. doi:10.1038\/s41597-020-0520-9","comments":"The data were acquired in summer 2012 from Swedish icebreaker (IB) Oden during the LOMROG III 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 LOMROG III expedition started and ended in Longyearbyen, Svalbard, and lasted from July 31 to September 14, 2012. This was a follow-up to LOMROG, conducted in 2007, and LOMROG II conducted in 2009. The expedition was carried out by the Danish Continental Shelf Project in cooperation with the Swedish Polar Research Secretariat and the Swedish Maritime Administration.","category":"Marine","subcategory":"Bathymetry","keywords":"Geophysics; Arctic Ocean; Bathymetry; Seafloor morphology; Multibeam; LOMROG III expedition; Icebreaker Oden","scientist":"Richard Gyllencreutz, Niki Andersen, Francis Freire, Nina Kirchner, Rezwan Mohammad, Richard Pedersen, Morten S\u00f8lvsten","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 > Arctic Ocean","progress":"Completed","language":"English","project":"Lomonosov Ridge off Greenland (LOMROG III) 2012 expedition","publisher":"Bolin Centre Database","version":"1","constrains":"","access":""}]