UK Admiralty Magnetic Charts
Data set information
| Query EDMED |
| General | |
| Data holding centre | United Kingdom Hydrographic Office |
| Country | United Kingdom  |
| Time period | Every 5 years for magnetic variation; every 10 years for magnetic intensity |
| Ongoing | Yes |
| 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). |
| Originators | United Kingdom Hydrographic Office |
| Data web site | http://www.ukho.gov.uk/ |
| Availability | |
| Organisation | United Kingdom Hydrographic Office |
| Availability | Collection cost charge; licence |
| Contact | Edward Hosken (Head of Hydrographic Data Services) |
| Address | United Kingdom Hydrographic Office |
| Telephone | +44 1823 337900 |
| edward.hosken@ukho.gov.uk | |
| Administration | |
| Collating centre | British Oceanographic Data Centre |
| Local identifier | 1027008 |
| Global identifier | 378 |
| Last revised | 2009-05-22 |
