Extremal forecast of latitude, longitude and intensity of the geomagnetic dipole between 2019 and 2119 (NERC Grant NE/P016758/1)
This dataset contains extremal forecast of latitutude (lat), longitude (lon) and intensity of the geomagnetic dipole between 2019 and 2119. The geomagnetic dipole is evolved by a fluid flow at the core-mantle boundary that maximises the rate-of-change of the dipole latitude. The forecast is calculated from the year 2019 assuming that the geomagnetic field is described by the CHAOS-7 dataset. The optimisation procedure is described in https://doi.org/10.3390/geosciences11080318
non geographic dataset
:
http://data.bgs.ac.uk/id/dataHolding/13607898
English
Geoscientific information
GEMET - INSPIRE themes, version 1.0:
BGS Thesaurus of Geosciences:
NGDC Deposited Data
Geomagnetic poles
Geomagnetic fields
Free:
Free:
NERC_DDC
creation: 2022-01-20
2019-07-01
-
2021-07-31
University of Liverpool
Dr P Livermore
email:
not available
Role: principal investigator
ETH Zurich
Stefano Maffei
Zurich
email:
not available
Role: originator
British Geological Survey
Enquiries
email:
not available
Role: distributor
British Geological Survey
Enquiries
email:
not available
Role: point of contact
Data Quality
The extreme forecast are prepared via the following procedure: 1. The magnetic field at the core-mantle boundary in 2019 is given by the CHAOS-7 geomagnetic field model 2. Using the optimisation methodology published in https://doi.org/10.3390/geosciences11080318, the flow that maximises the instantaneous rate-of-change in dipole latitude is derived. A root-mean-square flow speed of 13 km/yr at the core-mantle boundary is prescribed. Either unrestricted or equatorially symmetric flow geometries can be chosen. 3. The optimal flow is used to evolve the core-mantle boundary magnetic field in time by solving the induction equation via a second order AB time-stepping scheme. 4. After one year of evolution the optimal flow is calculated again from the resulting core-mantle boundary magnetic field 5. Repeat from 3.
INSPIRE Implementing rules laying down technical arrangements for the interoperability and harmonisation of Geology
Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services
Constraints
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.
Available under the Open Government Licence subject to the following acknowledgement accompanying the reproduced NERC materials "Contains NERC materials ©NERC [year]"
licenceOGL
Metadata about metadata
d6923465-3407-38e2-e054-002128a47908
British Geological Survey
Environmental Science Centre,Keyworth,
NOTTINGHAM,
NG12 5GG,
United Kingdom
tel: +44 115 936 3100
email:
enquiries@bgs.ac.uk
Role: point of contact
2024-04-24