Date (Revision)

2020-09-01

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

On going

Point of contact

Organisation name	Individual name	Electronic mail address	Role
GNS Science		geomag@gns.cri.nz	Point of contact

Maintenance and update frequency

Continual

Keywords

• Geomagnetism

• Magnetic fields

• Magnetic anomalies

• Amberley Observatory

• Eyrewell Magnetic Observatory

• New Zealand

• Samoa

• Scott Base

• Antarctica

• Magnetic recording

• Christchurch Magnetic Observatory

• Temporal variation

Use constraints

Copyright

Other constraints

The data is made available through INTERMAGNET - the global network of observatories, monitoring the Earth's magnetic field. The data is provided for your own internal use only; it is not for commercial use, sale or distribution to third parties without the written permission of GNS Science. Publications making use of the data should include an acknowledgment statement as specified by INTERMAGNET.

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

Begin date

1902-01-01

Distribution format

Name	Version
IAGA2002	2002

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

OnLine resource

Protocol	Linkage	Name
WWW:LINK-1.0-http--link	https://intermagnet.github.io/	INTERMAGNET

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

b7b67c6b-8d4a-42d4-8d33-1e84a447e327 XML

Metadata language

English

Character set

UTF8

Parent identifier

097c0f37-ac9a-45cb-9cfa-1bec4c67fd16

Hierarchy level

Dataset

Hierarchy level name

Dataset

Date stamp

2024-10-22T22:41:15.740448Z

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