Digitised magnetogram data from three UK observatories (NERC Grant NE/P017231/1)
Digitised magnetogram data from Lerwick, Eskdalemuir and Hartland for two large geomagnetic storms (March 1946 and August 1972). Data have been manually extracted using Enguage Digitizer and verified against hourly mean values from the World Data Centre for Geomagnetism
nonGeographicDataset
https://webapps.bgs.ac.uk/services/ngdc/accessions/index.html#item170970
name: Data
function: download
https://doi.org/10.5285/2d39fb6c-debb-408d-8abf-0298eebbf06d
name: Digital Object Identifier (DOI)
function: information
http://data.bgs.ac.uk/id/dataHolding/13607875
eng
geoscientificInformation
publication
2008-06-01
NGDC Deposited Data
Geomagnetic stations
revision
2022
NERC_DDC
1946-03-27
1972-08-07
creation
2021-12-14
notApplicable
Over the past two centuries, observatories measured the daily field variations using light-sensitive photographic paper to produce analogue magnetograms. Around 350,000 magnetograms have been digitally photographed at high-resolution. However, converting the traces to digital values is difficult and time consuming as the magnetograms can have over-lapping lines, low quality recordings and obscure metadata for conversion to SI units. We digitised the traces from two large geomagnetic storms and cross-checked the final digitised values with the recorded hourly mean values from observatory years books.
publication
2011
false
See the referenced specification
publication
2010-12-08
false
See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF
IAGA-2002 (Data exchange format)
The copyright of materials derived from the British Geological Survey's work is vested in the Natural Environment Research Council [NERC]. No part of this work may be reproduced or transmitted in any form or by any means, or stored in a retrieval system of any nature, without the prior permission of the copyright holder, via the BGS Intellectual Property Rights Manager. Use by customers of information provided by the BGS, is at the customer's own risk. In view of the disparate sources of information at BGS's disposal, including such material donated to BGS, that BGS accepts in good faith as being accurate, the Natural Environment Research Council (NERC) gives no warranty, expressed or implied, as to the quality or accuracy of the information supplied, or to the information's suitability for any use. NERC/BGS accepts no liability whatever in respect of loss, damage, injury or other occurence however caused.
British Geological Survey
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EDINBURGH
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0115 936 3142
0115 936 3276
distributor
British Geological Survey
The Lyell Centre, Research Avenue South
EDINBURGH
EH14 4AP
United Kingdom
0115 936 3142
0115 936 3276
originator
British Geological Survey
distributor
British Geological Survey
distributor
British Geological Survey
pointOfContact
British Geological Survey
principalInvestigator
British Geological Survey
Environmental Science Centre,Keyworth
NOTTINGHAM
NG12 5GG
United Kingdom
+44 115 936 3100
pointOfContact
2024-04-18