DSpace Repository

Geomagnetic secular variation over Spain 1970–1988 by means of spherical cap harmonic analysis

Show simple item record

dc.creator García García, Alicia
dc.creator Torta, Joan Miquel
dc.creator Curto, Juan José
dc.creator Sanclement, Ernest
dc.date 2008-06-06T14:46:39Z
dc.date 2008-06-06T14:46:39Z
dc.date 1991-08
dc.date.accessioned 2017-01-31T01:35:39Z
dc.date.available 2017-01-31T01:35:39Z
dc.identifier Physics of the Earth and Planetary Interiors, 68: 65-75 (1991)
dc.identifier 0031-9201
dc.identifier http://hdl.handle.net/10261/4857
dc.identifier 10.1016/0031-9201(91)90008-6
dc.identifier.uri http://dspace.mediu.edu.my:8181/xmlui/handle/10261/4857
dc.description Final full-text version of the paper available at: http://www.sciencedirect.com/science/journal/00319201
dc.description A spherical cap harmonic analysis was applied to Spain and neighbouring areas, covering a region with a cap half-angle of 16°. The technique, due to Haines, has allowed us to obtain a model of secular variation (SV) for a time interval of 18 years reduced to the epoch 1987.5. The total number of selected data points was 1581 provided from ten observatories and 60 repeat stations. The SV model has a maximum spatial index of four and temporal degree of two. The coefficients were tested and the statistically non-significant terms removed. Another model covering a smaller region with greater density of data has been developed and both results compared.
dc.description The average secular variations derived from the definitive geomagnetic reference field (DGRF) and the international geomagnetic reference field (IGRF) were compared with these models and maps plotting the calculated first field derivatives are presented. The integration of the final model will serve to update satellite data in order to produce a regional main field model.
dc.description This work was partially supported by the Dirección General de Investigaciôn Científica y Técnica, under the research project No. PB87-0390 at the Observatori de l’Ebre.
dc.description Peer reviewed
dc.format 22195 bytes
dc.format application/pdf
dc.language eng
dc.publisher Elsevier
dc.relation http://dx.doi.org/10.1016/0031-9201(91)90008-6
dc.rights closedAccess
dc.subject Geophysics
dc.subject Geomagnetism
dc.subject Secular variation
dc.subject Spherical Cap Harmonic Analysis (SCHA)
dc.subject Spain
dc.title Geomagnetic secular variation over Spain 1970–1988 by means of spherical cap harmonic analysis
dc.type Artículo

Files in this item

Files Size Format View

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record

Search DSpace

Advanced Search


My Account