[{"name":"oden-swerus-2014-leg-2-bathymetry-1","title":"High-resolution bathymetry data from expedition SWERUS-C3 Leg 2, Arctic Ocean, 2014","summary":"Multibeam bathymetry from areas in the East Siberian Arctic Ocean and adjacent deep waters off the continental shelf. More specifically, mapped areas include Arlis Plateau, a slope off Herald Canyon, and southern and central Lomonosov Ridge. Multibeam bathymetry aquired within the Russian Exclusive Economic Zone are not included here. \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 Swedish \u2013 Russian \u2013 US Arctic Ocean Investigation of Climate-Cryosphere-Carbon Interactions (SWERUS-C3) 2014 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 30 m. The processing of the raw data was carried out using the Qimera software by QPS.","citations":"\n  Weidner, E., Weber, T. C., Mayer, L., Jakobsson, M., Chernykh, D., and Semiletov, I., 2019, A wideband acoustic method for direct assessment of bubble-mediated methane flux: Continental Shelf Research, v. 173, p. 104-115. doi:10.1016\/j.csr.2018.12.005\n\n  Stranne, C., Mayer, L., Jakobsson, M., Weidner, E., Jerram, K., Weber, T. C., Anderson, L. G., Nilsson, J., Bj\u00f6rk, G., and G\u00e5rdfeldt, K., 2018, Acoustic mapping of mixed layer depth: Ocean Sci., v. 14, no. 3, p. 503-514. doi:10.5194\/os-14-503-2018\n\n  Bj\u00f6rk, G., Jakobsson, M., Assmann, K., Andersson, L. G., Nilsson, J., Stranne, C., and Mayer, L., 2018, Bathymetry and oceanic flow structure at two deep passages crossing the Lomonosov Ridge: Ocean Sci., v. 14, no. 1, p. 1-13. doi:10.5194\/os-14-1-2018\n\n  Stranne, C., Mayer, L., Weber, T. C., Ruddick, B. R., Jakobsson, M., Jerram, K., Weidner, E., Nilsson, J., and G\u00e5rdfeldt, K., 2017, Acoustic Mapping of Thermohaline Staircases in the Arctic Ocean: Scientific Reports, v. 7, no. 1, p. 15192.\n\n  Jakobsson, M., Pearce, C., Cronin, T. M., Backman, J., Anderson, L. G., Barrientos, N., Bj\u00f6rk, G., Coxall, H., de Boer, A., Mayer, L. A., M\u00f6rth, C. M., Nilsson, J., Rattray, J. E., Stranne, C., Semilietov, I., and O'Regan, M., 2017, Post-glacial flooding of the Beringia Land Bridge dated to 11,000 cal yrs BP based on new geophysical and sediment records: Climate of the Past, no 13, p. 1-22. doi:10.5194\/cp-2017-11\n\n  O'Regan, M., Backman, J., Barrientos, N., Cronin, T. M., Gemery, L., Kirchner, N., Mayer, L. A., Nilsson, J., Noormets, R., Pearce, C., Semiletov, I., Stranne, C., and Jakobsson, M., 2017, The De Long Trough: a newly discovered glacial trough on the East Siberian continental margin: Climate of the Past, v. 13, no. 9, p. 1269-1284. doi:10.5194\/cp-13-1269-2017\n\n  Cronin, T. M., O'Regan, M., Pearce, C., Gemery, L., Toomey, M., Semiletov, I., and Jakobsson, M., 2017, Deglacial sea level history of the East Siberian Sea and Chukchi Sea margins: Climate of the Past, v. 13, no. 9, p. 1097-1110. doi:10.5194\/cp-13-1097-2017\n\n  Nilsson, J., Jakobsson, M., Borstad, C., Kirchner, N., Bj\u00f6rk, G., Pierrehumbert, R. T., and Stranne, C., 2017, Ice-shelf damming in the glacial Arctic Ocean: dynamical regimes of a basin-covering kilometre thick ice shelf: The Cryosphere, v. 11, no. 4, p. 1745-1765. doi:10.5194\/tc-11-1745-2017\n\n  Anderson, L. G., Bj\u00f6rk, G., Holby, O., Jutterstr\u00f6m, S., M\u00f6rth, C. M., O'Regan, M., Pearce, C., Semiletov, I., Stranne, C., St\u00f6ven, T., Tanhua, T., Ulfsbo, A., and Jakobsson, M., 2017, Shelf\u2013Basin interaction along the East Siberian Sea: Ocean Science, v. 13, no. 2, p. 349-363.\n\n  Stranne, C., O'Regan, M., Dickens, G. R., Crill, P., Miller, C., Preto, P., and Jakobsson, M., 2016, Dynamic simulations of potential methane release from East Siberian continental slope sediments: Geochemistry, Geophysics, Geosystems. doi:10.1002\/2015GC006119\n\n  Jakobsson, M., Nilsson, J., Anderson, L., Backman, J., Bj\u00f6rk, G., Cronin, T.M., Kirchner, N., Koshurnikov, A., Mayer, L., Noormets, R., O\u2019Regan, M., Stranne, C., Ananiev, R., Macho, N.B., Cherniykh, D., Coxall, H., Eriksson, B., Flod\u00e9n, T., Gemery, L., Gustafsson, \u00d6., Jerram, K., Johansson, C., Khortov, A., Mohammad, R. and Semiletov, I., 2016, Evidence for an ice shelf covering the central Arctic Ocean during the penultimate glaciation: Nature Communications, 7, 10365. doi:10.1038\/ncomms10365\n\n  Jakobsson, M., Mayer, L.A., Bringensparr, C., Castro, C.F., Mohammad, R., Johnson, P., Ketter, T., Accettella, D., Amblas, D., An, L., Arndt, J.E., Canals, M., Casamor, J.L., Chauch\u00e9, N., Coakley, B., Danielson, S., Demarte, M., Dickson, M.-L., Dorschel, B., Dowdeswell, J.A., Dreutter, S., Fremand, A.C., Gallant, D., Hall, J.K., Hehemann, L., Hodnesdal, H., Hong, J., Ivaldi, R., Kane, E., Klaucke, I., Krawczyk, D.W., Kristoffersen, Y., Kuipers, B.R., Millan, R., Masetti, G., Morlighem, M., Noormets, R., Prescott, M.M., Rebesco, M., Rignot, E., Semiletov, I., Tate, A.J., Travaglini, P., Velicogna, I., Weatherall, P., Weinrebe, W., Willis, J.K., Wood, M., Zarayskaya, Y., Zhang, T., Zimmermann, M., Zinglersen, K.B., 2020. The International Bathymetric Chart of the Arctic Ocean Version 4.0. Scientific Data 7, 176. doi:10.1038\/s41597-020-0520-9\n\n","comments":"The data were acquired in summer through autumn 2014 from Swedish icebreaker (IB) Oden during the SWERUS-C3 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 SWERUS-C3 expedition consisted of two 45-day legs. Leg 1 started on 5 July from Troms\u00f8 Norway and worked along the Siberian continental shelf towards Barrow, Alaska, where both scientific personnel and crew were replaced. Leg 2 departed from Barrow on 21 August, and this part of the expedition took Oden farther out from the Siberian continental shelf and slope into the deep central Arctic Ocean. \r\n\r\n\r\nThe expedition formed the key component of a research program with core funding from the Knut and Alice Wallenberg Foundation (KAW). The expedition was financed by KAW and the Swedish Polar Research Secretariat. The project was developed into a multi-disciplinary international research program investigating the contemporary and historical functioning of the climate-cryosphere-carbon (C3) system of the East Siberian Arctic Ocean and adjacent deep waters off the continental shelf. Expedition participants were from Sweden, Russia, USA, Norway, Canada, UK, Germany, Belgium and the Netherlands.","category":"Marine","subcategory":"Bathymetry","keywords":"Geophysics; Arctic Ocean; Bathymetry; Seafloor morphology; Multibeam; SWERUS-C3 expedition; Icebreaker Oden","scientist":"Martin Jakobsson, Larry Mayer, Bj\u00f6rn Eriksson, Rezwan Mohammad, Kevin Jerram, Denis Chernykh, Roman Ananyev","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":"Swedish \u2013 Russian \u2013 US Arctic Ocean Investigation of Climate-Cryosphere-Carbon Interactions (SWERUS-C3) expedition","publisher":"Bolin Centre Database","version":"1","constrains":"","access":""}]