English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/4857
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

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

AutorGarcía García, Alicia ; Torta, Joan Miquel; Curto, Juan José; Sanclement, Ernest
Palabras claveGeophysics
Secular variation
Spherical Cap Harmonic Analysis (SCHA)
Fecha de publicaciónago-1991
CitaciónPhysics of the Earth and Planetary Interiors, 68: 65-75 (1991)
ResumenA 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.
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.
DescripciónFinal full-text version of the paper available at: http://www.sciencedirect.com/science/journal/00319201
Versión del editorhttp://dx.doi.org/10.1016/0031-9201(91)90008-6
Aparece en las colecciones: (MNCN) Artículos
(OE) Artículos
Ficheros en este ítem:
No hay ficheros asociados a este ítem.
Mostrar el registro completo

Artículos relacionados:

NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.