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Topographic statistics for the surface and seabed area, volume, depths, and slopes for the world's seas, oceans and countries
Costelloe, M.; Cheung, A.; De Hauwere, N. (2015). Topographic statistics for the surface and seabed area, volume, depths, and slopes for the world's seas, oceans and countries, in: (2014). 2nd International Ocean Research Conference Barcelona, 17-21 November . ScienceOpen Posters, : pp. 1 poster. hdl.handle.net/10.14293/P2199-8442.1.SOP-LIFE.PZDAWX.v1
In: (2014). 2nd International Ocean Research Conference Barcelona, 17-21 November. ScienceOpen Posters. Intergovernmental Oceanographic Commission (IOC) of UNESCO/The Oceanography Society (TOS): [s.l.]. , more
In: ScienceOpen Posters. ScienceOpen: Burlington. ISSN 2199-8442, more
Peer reviewed article  

Available in  Authors 
Document type: Poster

Keywords
    Bathymetry; Biodiversity; Oceans; Sea bed; Sea surface; Topography; Marine

Authors  Top 
  • Costelloe, M.
  • Cheung, A.
  • De Hauwere, N., more

Abstract
    We produced a new terrain map of the oceans from the best available resolution global bathymetry using a Geographical Information System. From this map, we calculated the following statistics for each sea and ocean, and each country’s Exclusive Economic Zone2: sea surface and seabed area, volume, mean, maximum and standard deviation of depth and slope. We found a total sea surface area of 353 million km2, seabed area of 354 million km2, and volume of 1 trillion litres or 1.3 billion km3. The deepest depth was 10,898 m in Micronesia, North Pacific Ocean. We found that the ocean was very flat; 71% of seabed had a slope of < 1o. We predicted locations of 56,741 seamounts (> 1,000 m high) with 74% within 30-min distance of known seamounts. We also identified over 1 million circular seabed features that may be seamounts or sea-hills.

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