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Bathymetry

Par ecola — Dernière modification 11/02/2013 15:57
Description of a new global composite bathymetry built up for FES2012 project

Methodology

 

Original bathymetry is Etopo-1 (2010). Patches are then performed to update the original bathymetry with the most accurate local depths (or believed so). Details on global and regional databases can be found on LEGOS bathymetry database web page. All global databases have been updated before patching (october 2011).

Nota: IBCAO (arctic), USA and Japanese waters already included in Etopo-1

 

Status

 

20/10/2011 :

A first composite has been made available in srv-ecola:/data/depository/data/topography/FES2012/etopo-1 (etopo-9.grd composite). Production details can be found in the batch file (same directory). A mirror site is installed on /raid1/ocean/data/topography/FES2012.

warning : South Hudson Bay patch was not applied in etopo-9.grd, turned to be an issue for global ocean tidal simulations...

 

02/12/2011 :

Upgrade is available in srv-ecola:/data/depository/data/topography/FES2012/etopo-1 (etopo-13.grd composite).  South Hudson Bay patch has been applied.

 

05/12/2011 :

Upgrade is available in srv-ecola:/data/depository/data/topography/FES2012/etopo-1 (etopo-16.grd composite).  Fundy Bay and St Laurent shelf patch applied.

 

Atlantic ocean patches:

 

  • Northwest European Shelf: Legos composite (#17), no restriction
  • South Hudson Bay: gebco_08, no restriction
  • Fundy Bay and St Laurent: gebco_08, -500m< H < 0m, restriction polygon (fundy-StLaurent.plg)
  • Mediterranean Sea: Legos composite (#17), no restriction
  • Black Sea: gebco-08, restriction polygon (black-sea.plg)
  • Marmara Sea and Bosphor Channel : LEGOS archive (E. Ozoï) , restriction polygon (marmara.plg) (to be revisited)
  • Azores: Momar bathymetry, no restriction (to be revisited)
  • Patagonian Shelf: topomix, -500m< H < 0m, restriction polygon (patagonia.plg)

 

Indian ocean patches:

 

  • Indian western shelf: gridone, -500m< H < 0m, restriction polygon (west-india.plg)
  • Persian Gulf: etopo-1, restriction polygon (persian.plg)

SHOM bathymetry when available

 

Pacific ocean patches:

 

  • Bering Strait: gridone, -500m< H < 0m, restriction polygon (bering.plg)
  • Okhokst: Smith&Sandwell, v14, -500m< H < 0m, restriction polygon (okhokst.plg)
  • China Sea: gridone, gebco_08 (?), -500m< H < 0m, restriction polygon (china-sea.plg)
  • Yellow Sea: gebco_08, -500m (?) < H < 0m, restriction polygon (yellow-sea.plg)
  • Australia: Geoscience Australia, -500m< H < 0m
  • MacQuarries Islands: Geoscience Australia (see bathymetry database web page), -500m< H < 0m

 

Austral ocean patches:

  • Antarctic (global): pangea (Timmerman), no restriction
  • Mertz Ice Shelf: L. Testut et al.
  • Kerguelen Plateau: L. Testut et al.

 

Post-task 1 patches

  • Gulf of Tongking: Smith&Sandwell v14
  • South Hudson Bay: gebco_08, no restriction

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