English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/101923
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Citado 10 veces en Web of Knowledge®  |  Ver citas en Google académico
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar otros formatos: Exportar EndNote (RIS)Exportar EndNote (RIS)Exportar EndNote (RIS)
Título

Intensity of the geomagnetic field in Europe for the last 3 ka: Influence of data quality on geomagnetic field modeling

Autor Pavón Carrasco, F. J.; Gómez-Paccard, Miriam ; Hervé, G.; Osete, María Luisa
Palabras clave Archeomagnetism
Archeointensity
Secular variation
Geomagnetic field modeling
Europe
Fecha de publicación 24-jun-2014
EditorAmerican Geophysical Union
Citación Geochemistry, Geophysics, Geosystems, 15(6): 2515- 2530 (2014)
ResumenOne of the main challenges of paleomagnetic research is to obtain high-resolution geomagnetic field intensity reconstructions. For the last millennia, these reconstructions are mostly based on archeomagnetic data. However, the quality of the intensity data available in the databases is very variable, and the high scatter observed in the records clearly suggests that some of them might not be reliable. In this work we investigate how the geomagnetic field intensity reconstructions and, hence, our present knowledge of the geomagnetic field in the past, are affected by the quality of the data selected for modeling the Earth's magnetic field. For this purpose we rank the European archeointensity data in four quality categories following widely accepted paleomagnetic criteria based on the methodology used during the laboratory treatment of the samples and on the number of specimens retained to calculate the mean intensities. Four geomagnetic field regional models have been implemented by applying the revised spherical cap harmonic analysis to these four groups of input data. Geomagnetic field models strongly depend on the used data set. The model built using all the available data (without any preselection) appears to be the less accurate, indicating some internal inconsistencies of the data set. In addition, some features of this model are clearly dominated by the less reliable archeointensity data, suggesting that such features might not reflect real variations of the past geomagnetic field. On the contrary, the regional model built on selected high-quality intensity data shows a very consistent intensity pattern at the European scale, confirming that the main intensity changes observed in Europe in the recent history of the geomagnetic field occurred at the continental scale. © 2014. American Geophysical Union. All Rights Reserved.
Versión del editorhttp://dx.doi.org/10.1002/2014GC005311
URI http://hdl.handle.net/10261/101923
DOI10.1002/2014GC005311
ISSN1525-2027
Aparece en las colecciones: (IGEO) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
GGG_2014_15_6_2515.pdf2,32 MBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 



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