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TitleThe International Bathymetric Chart of the Arctic Ocean version 4.0
AuthorJakobsson, MORCID logo; Mayer, L A; Bringensparr, C; Castro, C FORCID logo; Mohammad, R; Johnson, P; Ketter, T; Accettella, D; Amblas, DORCID logo; An, L; Arndt, J E; Canals, MORCID logo; Casamor, J L; Chauché, N; Coakley, B; Danielson, SORCID logo; Demarte, M; Dickson, M -L; Dorschel, BORCID logo; Dowdeswell, J AORCID logo; Dreutter, S; Fremand, A CORCID logo; Gallant, D; Hall, J K; Hehemann, L; Hodnesdal, H; Hong, J; Ivaldi, R; Kane, E; Klaucke, IORCID logo; Krawczyk, D W; Kristoffersen, Y; Kuipers, B R; Millan, R; Masetti, G; Morlighem, MORCID logo; Noormets, RORCID logo; Prescott, M M; Rebesco, MORCID logo; Rignot, E; Semiletov, I; Tate, A J; Travaglini, P; Velicogna, I; Weatherall, P; Weinrebe, W; Willis, J K; Wood, MORCID logo; Zarayskaya, YORCID logo; Zhang, TORCID logo; Zimmermann, M; Zinglersen, K B
SourceScientific Data vol. 7, issue 1, 2020 p. 1-14, Open Access logo Open Access
Alt SeriesNatural Resources Canada, Contribution Series 20200292
PublisherNature Research
Mediapaper; on-line; digital
File formatpdf; html
ProvinceNorthern offshore region
NTS13; 14; 15; 16; 24; 25; 26; 27; 29; 37; 38; 39; 98; 99; 107; 117; 120; 340; 560
AreaArctic Ocean; Labrador Sea; Davis Strait; Baffin Bay
Lat/Long WENS-180.0000 180.0000 90.0000 58.0000
Subjectsmarine geology; surficial geology/geomorphology; geophysics; Science and Technology; Nature and Environment; oceanography; bathymetry; geophysical surveys; acoustic surveys, marine; side-scan sonar; submarine features; Geographic data
Illustrationslocation maps; bar graphs; tables; flow diagrams; geoscientific sketch maps
Released2020 07 09
AbstractBathymetry (seafloor depth), is a critical parameter providing the geospatial context for a multitude of marine scientific studies. Since 1997, the International Bathymetric Chart of the Arctic Ocean (IBCAO) has been the authoritative source of bathymetry for the Arctic Ocean. IBCAO has merged its efforts with the Nippon Foundation-GEBCO-Seabed 2030 Project, with the goal of mapping all of the oceans by 2030. Here we present the latest version (IBCAO Ver. 4.0), with more than twice the resolution (200 × 200 m versus 500 × 500 m) and with individual depth soundings constraining three times more area of the Arctic Ocean (?19.8% versus 6.7%), than the previous IBCAO Ver. 3.0 released in 2012. Modern multibeam bathymetry comprises ?14.3% in Ver. 4.0 compared to ?5.4% in Ver. 3.0. Thus, the new IBCAO Ver. 4.0 has substantially more seafloor morphological information that offers new insights into a range of submarine features and processes; for example, the improved portrayal of Greenland fjords better serves predictive modelling of the fate of the Greenland Ice Sheet.
Summary(Plain Language Summary, not published)
This publication focuses on bathymetry, which is the measurement of seafloor depth. Knowing the depth of the seafloor is crucial for many marine science studies. The International Bathymetric Chart of the Arctic Ocean (IBCAO) has been providing bathymetric data for the Arctic Ocean since 1997.
Now, IBCAO has teamed up with the Nippon Foundation-GEBCO-Seabed 2030 Project to map all the world's oceans by 2030. In this article, they present the latest version, IBCAO Ver. 4.0. This new version has much higher resolution, meaning it provides more detailed depth information for the Arctic Ocean.
Compared to the previous version (IBCAO Ver. 3.0), this new version has twice the resolution and includes three times more depth soundings. It also contains more modern multibeam bathymetry data. This detailed information helps scientists better understand the seafloor's features and processes. For example, it can improve predictions about what's happening with the Greenland Ice Sheet.
The scientific impact of this publication is significant because it provides more accurate and detailed data about the Arctic Ocean's seafloor. This information is crucial for various scientific studies and has practical applications, such as helping us understand the effects of climate change on ice sheets.

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