European Directory of Marine Environmental Data (EDMED)

Data set information

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General
Data set name

UK Admiralty Magnetic Charts

Data holding centreUnited Kingdom Hydrographic Office
CountryUnited Kingdom  United Kingdom
Time periodEvery 5 years for magnetic variation; every 10 years for magnetic intensity
OngoingYes
Geographical area

Worldwide

Observations 
Parameters

Magnetics

Instruments

Magnetometers

Description 
Summary

Seven charts which show the magnetic variation (declination, D) for the current quinquennium and the annual rates of change in variation. Of these, one is a world chart on a scale of 1:44 million, five cover the main ocean areas on a scale of 1:20 million, and the sixth covers the north and south polar areas also at 1:20 million. The polar sheet is on the Polar Stereographic projection, and all the others are on the Mercator Projection. There are six further world sheets, all on the Mercator projection, at a scale of 1:45 million,showing the inclination or dip (I).The most widely used for the purposes of sea and air navigation are those showing magnetic variation (declination, D).

OriginatorsUnited Kingdom Hydrographic Office
Data web sitehttp://www.ukho.gov.uk/
Availability 
OrganisationUnited Kingdom Hydrographic Office
AvailabilityCollection cost charge; licence
ContactEdward Hosken (Head of Hydrographic Data Services)
Address

United Kingdom Hydrographic Office

Taunton
Somerset
TA1 2DN
United Kingdom

Telephone+44 1823 337900
Emailedward.hosken@ukho.gov.uk
Administration 
Collating centreBritish Oceanographic Data Centre
Local identifier1027008
Global identifier378
Last revised2009-05-22