Geology and Geophysics pages

Geology & Geophysics Group

SeaDOG database

Contact: Dr Tim Le Bas

Click here to search the SeaDOG database on line

SeaDOG dataflow

SeaDOG is a metadata database that holds information on Deep Ocean Geophysical data.  The actual data is stored offline in a large archive facility and copies can be requested by the UK academic community. Many types of geophysical data are included in the metadata database, such as bathymetry, sidescan, seismic, photographic, magnetics and gravity.  The metadata database is available on the World Wide Web.  Users can browse the database by several criteria, such as area, datatype, keywords and cruise name, or by any combination of these. The resulting search will give the user a list of cruises and data found matching the criteria. A deeper search is then possible to define where and what specific datafiles are available. This is dependant on the data embargo date, a date set by the principle investigator to allow intellectual property rights to be maintained. At present there are over 260 cruises from over 30 research ships in the metadata database. Holdings at present total nearly 2Tb.   There is still much data to add to the metadata database and work is ongoing.

The data request is then set to the database manager by email and will be serviced under Freedom of Information rules.  Occasionally data cannot be released due to a variety of restrictions (e.g. copyright, commercialism, IPR etc) but this is unusual.

SeaDOG map

The database can give the user extra information on each cruise and dataset. This will include: 

  • the people involved (principal investigator, owner of the data, who entered the data in the database, who quality checked the data), 
  • their affiliations, 
  • the overall size of each dataset available, 
  • its quality (subjective of course), 
  • the ship it was collected on, 
  • start and end dates, 
  • completeness of the dataset in SeaDOG, 
  • any comments logged 

This can then be requested from the SeaDOG database (at reproduction costs only for data contributors). 

There are over 1126 cruise data sets with over 65,000 datafiles from 60 different datatypes, equivalent to 1,875 Gb of data from 279 cruises so far.