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Paper magnetograms

This database documents fluctuations in the Earth's regional (New Zealand) magnetic field measured before the age of digital records.


New Zealand operates magnetic observatories in Canterbury (the Eyrewell Geomagnetic Observatory located at West Melton) and Scott Base in Antarctica, and supports the Apia observatory in Samoa. Observatories in the present days provide a record of temporal changes of the magnetic field, recording the three components of the magnetic field every second.


Eyrewell (EYR), Scott Base (SBA) and Apia (API) geomagnetic observatories.

Simple

Date (Creation)
1901-11-01
Purpose

GNS Science measures and monitors the magnetic field primarily as a contribution to the world scientific community but also to provide reference information for various kinds of magnetic surveys.


Observatories in New Zealand and Samoa provide the only continuous data from about a 90° arc of the Southern Hemisphere, one eighth of the globe.


GNS Science possesses a continuous reference series of geomagnetic measurements back to 1901 thereby enabling the identification of long term changes in Earth's magnetic field.

Status
Historical archive
Point of contact
Organisation name Individual name Electronic mail address Role

GNS Science

geomag@gns.cri.nz

Point of contact
Maintenance and update frequency
Not planned
Keywords
  • Geomagnetism

  • Magnetic fields

  • Magnetic anomalies

  • Amberley Observatory

  • Apia Observatory

  • Eyrewell Magnetic Observatory

  • New Zealand

  • Samoa

  • Scott Base

  • Antarctica

  • Magnetic recording

  • Christchurch Magnetic Observatory

  • Temporal variation

Use constraints
Copyright
Other constraints

GNS Science has made all reasonable endeavours to ensure the accuracy and completeness of the datasets but gives no warranties and makes no representations (express or implied) as to its accuracy, completeness or fitness for purpose, or title. GNS Science accepts no liability on account of errors in any of the information and each user must rely on its own inquiries. GNS Science excludes liability for any loss, damage or expense, direct or indirect and however caused, whether through negligence or otherwise resulting from any person, company or organisation's use of, or reliance on, these data. In no circumstances will GNS Science be liable for consequential, indirect, special or punitive damages. Use of the product will be deemed to be acceptance of these terms.

Classification
Unclassified
Language
English
Topic category
  • Geoscientific information
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Begin date
1902-01-01
Distribution format
Name Version

tiff

csv

Distributor contact
Organisation name Individual name Electronic mail address Role

GNS Science

datamanagement@gns.cri.nz

Point of contact
OnLine resource
Protocol Linkage Name

WWW:LINK-1.0-http--link

https://www.gns.cri.nz/Home/Our-Science/Land-and-Marine-Geoscience/Earth-s-Magnetic-Field/New-Zealand-Geomagnetic-Database

New Zealand Geomagnetic Database

Hierarchy level
Dataset
Statement

There was a succession of 3 observatories in or near Christchurch: the first was established in the Botanic Gardens (1901-1958; paper records), the second at Amberley (1916-1977; paper records), and the third at Eyrewell (1978-1995; paper records). In 1994 digital equipment was installed at Eyrewell allowing it to become an INTERMAGNET observatory.


Magnetic measurements began at Scott Base for the International Geophysical Year in 1957. GNS has paper records from 1957-1994. Scott Base became an INTERMAGNET observatory in 1996.


Magnetic measurements in Apia began in 1902. GNS has paper records from 1907-1994. In 1998 the installation of a digital system allowed Apia to become an INTERMAGNET observatory.


Real-time data is now sent to INTERMAGNET Geomagnetic Information Nodes within 72 hours of recording.

Metadata

File identifier
42b18b1a-caf1-4ae1-8b0a-d3e3feb87c5b XML
Metadata language
English
Character set
UTF8
Parent identifier

56c42b24-b93d-46d1-8e7a-4e0a1051881f

Hierarchy level
Dataset
Hierarchy level name

Dataset

Date stamp
2024-11-25T21:54:19.362319Z
Metadata standard name

ISO 19115:2003/19139

Metadata standard version

1.0

Metadata author
Organisation name Individual name Electronic mail address Role

GNS Science

datamanagement@gns.cri.nz

Point of contact
 
 

Overviews

overview
Absolute magnetic hut located in Christchurch Botanical Gardens circa 1910-1926

Spatial extent

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Keywords


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