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This data has achieved Bronze level on 22 October 2015 which means this data makes a great start at the basics of publishing open data.

Worldwide Magnetograms with Geomagnetic Components D, H, Z, or X, Y, and Z

Summary

Type of release
ongoing release of a series of related datasets

Data Licence
Not Applicable

Content Licence
Creative Commons CCZero

Verification
automatically awarded

Release Date
26 September 2015
Modified Date
6 October 2015
Update Frequency
weekly
Publishers
National Oceanic and Atmospheric Administration, Department of Commerce
Identifier
worldwide-magnetograms-with-geomagnetic-components-d-h-z-or-x-y-and-z
Landing Page
http://catalog.data.gov/dataset/worldwide-magnetograms-with-geomagnetic-components-d-h-z-or-x-y-and-z
Temporal Coverage
1 January 1957

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Description

The NOAA National Centers for Environmental Information (formerly National Geophysical Data Center) receives magnetograms from over 200 geomagnetic observatories. The Center archives data from 1867 to the present, however the primary holdings are from 1957 to the present. The archives contain over 5,000 reels of 35 mm microfilm copies of magnetograms. Magnetograms are records obtained from an instrument known as a magnetometer which is designed to measure small variations in the components of the geomagnetic field. There are two types of magnetometers, the La Cour and the Ruska. The magnetogram consists of one or more (usually 3) variometers, one for each element usually D, H, Z (less common X, Y, Z) and a recorder. The standard magnetogram usually has all three components recorded simultaneously on one sheet of paper. In addition to the 3 traces, reference lines (baselines) are recorded. The baselines are used in absolute calibration of the magnetogram. The normal recording speed is 20 mm/hour with the drum turning once in 24 hours.

General Information

Legal Information

This dataset has been created by US Government which means it is required to be in the public domain. However US copyright law only allows open access by US citizens, we have assumed the data is equivalently licensed as CC0 for the rest of the world as this is in the spirit of the US Government’s Open Data policy.

  • The rights statement is at

    http://catalog.data.gov/dataset/worldwide-magnetograms-with-geomagnetic-components-d-h-z-or-x-y-and-z Do you think this data is incorrect? Let us know

  • Outside the US, this data is available under

    Creative Commons CCZero Do you think this data is incorrect? Let us know

  • There are

    yes, and the rights are all held by the same person or organisation Do you think this data is incorrect? Let us know

  • The content is available under

    Creative Commons CCZero Do you think this data is incorrect? Let us know

  • This data contains

    no data about individuals Do you think this data is incorrect? Let us know

Practical Information

  • The data appears in this collection

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  • This data changes

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  • Find out how to contact someone about this data at

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  • Find out how to suggest improvements to publication at

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