Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/3976| DC Field | Value | Language |
|---|---|---|
| dc.contributor.authorall | De Santis, A.; Istituto Nazionale di Geofisica, Roma, Italia | en |
| dc.date.accessioned | 2008-07-17T10:32:24Z | en |
| dc.date.available | 2008-07-17T10:32:24Z | en |
| dc.date.issued | 1991 | en |
| dc.identifier.uri | http://hdl.handle.net/2122/3976 | en |
| dc.description.abstract | The method of spherical cap harmonic analysis (SCHA), due to Haines (1985) is appropriate for regional geomagnetic field modelling as it includes the required potential field constraints and, for a given number of model parameters, describes shorter wavelength features than a global spherical harmonic model. If the origin of the coordinate system is moved from the centre of the Earth towards the surface then the Earth's surface is no longer equidistant from the origin. At the Earth's surface the minimum wavelength described by a SCH model in the new coordinate system is smaller at the centre of the region than at the edge. This method of translated origin spherical cap harmonic analysis (TOSCA) has been applied to regional field modelling for Italy. The method is able to take advantage of the dense distribution of data at the centre of region and the model effectively smooths towards the periphery. The performance of the TOSCA model is discussed in relation to a model derived using conventional SCHA. | en |
| dc.language.iso | English | en |
| dc.publisher.name | Blackwell Science Ltd | en |
| dc.relation.ispartof | Geophysical Journal International | en |
| dc.relation.ispartofseries | / 106 (1991) | en |
| dc.subject | ground and satellite data analysis | en |
| dc.subject | regional field modelling | en |
| dc.subject | spherical cap harmonic analysis | en |
| dc.title | Translated origin spherical cap harmonic analysis | en |
| dc.type | article | en |
| dc.description.status | Published | en |
| dc.type.QualityControl | Peer-reviewed | en |
| dc.description.pagenumber | 253-263 | en |
| dc.subject.INGV | 04. Solid Earth::04.05. Geomagnetism::04.05.03. Global and regional models | en |
| dc.subject.INGV | 05. General::05.05. Mathematical geophysics::05.05.99. General or miscellaneous | en |
| dc.relation.references | Alldredge, L. R., 1980. Local functions to represent regional and local geomagnetic fields, Geophysics, 45,244-254. Alldredge, L. R., 1987 On regional geomagnetic charts, 1. Geomag. Geoelectr., 39, 723-738. Barraclough, D. R., 1987. IGRF: the fourth generation, Phys. Earth planet. Inter., 48, 279-292. Barton, C. E., McFadden, P. L., Haines, G. V. & Newitt, L. R., 1989. Rectangular and spherical cap harmonic analysis of Australian geomagnetic data (abstract), IAGA Bull., 53, B, 123. Bloxham, J. & Jackson, A., 1989. Simultaneous stochastic inversion for geomagnetic main field and secular variation. 2. 1820-1980, J. geophys. Res., 94, 15 753-15 769. Bullard, E. C., 1967. The removal of trend from magnetic surveys, Earth planet. Sci. Lett., 2, 293-300. De Santis, A., Kerridge, D. J. & Barraclough, D. R., 1989. A spherical cap harmonic model of the crustal magnetic anomaly field in Europe observed by Magsat, in Geomagnetism and Palaeomagnetism, pp. 1-17, eds Lowes, F. J., Collinson, D. W., Parry, J. H., Runcorn, S. K.,Tozer, D. C. & Soward, A., Kluwer, Dordrecht. De Santis, A., Battelli, 0. & Kerridge, D. J., 1990. Spherical cap harmonic analysis applied to regional field modelling for Italy, J. Geomag. Geoelectr., 42, 1019-1936. De Santis, A., De Franceschi, G., Zolesi, B. & Cander, L. R., 1991. Regional modelling and mapping of the ionospheric characteristic parameters by spherical cap harmonic expansion, Adv. Space Res., in press. Haines, G. V., 1985. Spherical cap harmonic analysis, J. geophys. Res., 99,2583-2591. Haines, G. V., 1987. Modelling the geomagnetic field by the method of spherical cap harmonic analysis, Proceedings of the IAGA Symposium Space-Time-Structure of the Geomagnetic Field, pp. 27-33, Heinrich-Hertz-Institut Rep. 21, Berlin. Haines, G. V., 1988. Computer programs for spherical cap harmonic analysis of potential and general fields, Comp. Geosci. 14, 413-447. Haines, G. V., & Newitt, L. R., 1986. Canadian geomagnetic reference field 1985, J. Geomag. Geoelectr., 38,895-921. International Astronomical Union, 1966. Proceedings of the 12th General Assembly, Hamburg, Germany, Trails. Int. astr. Un. 18B, 594-595. Lowes, F. J., 1990. The limitations of numerical models of the main geomagnetic field, J. Geomag. Geoelectr., 42, 1071-1078. Malin, S. R. C., 1983. Modelling the geomagnetic field, Geophys. J. R. astr. Soc., 74, 147-157. Nevanlinna, H., Ryno, J., Haines, G. V. & Borg, K., 1988. Spherical cap harmonic analysis applied to the Scandinavian geomagnetic field 1985.0, Dt. hydrogr. Z., 41, 177-186. Newitt, L. R. & Niblet, E. R., 1986. Relocation of the north magnetic dip pole, Can. l. Earth Sci., 23, 1062-1067. Newitt, L. R. & Haines, G. V., 1989. A Canadian geomagnetic reference field for epoch 1987.5, l. Geomag. Geoelectr., 41, 249-260. Pfitzer, K. A., 1989. Difficulties associated with the correct usage of magnetic field models (abstract), IAGA Bull., 53, B, 127. Schmitz, D., 1989. Spherical harmonic analysis, in The Encyclopedia of Solid Earth Geophysics, pp. 1217-1221, ed. James, D. E., Van Nostrand Reinhold Co., New York. Silva, J. B. C., 1986. Reduction to the pole as an inverse problem and its application to low-latitude anomalies, Geophysics, 51, 369-382. Walker, J. K., 1989. Spherical cap harmonic modelling of high latitude magnetic activity and equivalent sources with sparse observations, l. Atmos. Terrestr. Phys., 51, 67-80. | en |
| dc.description.journalType | N/A or not JCR | en |
| dc.description.fulltext | reserved | en |
| dc.contributor.author | De Santis, A. | en |
| dc.contributor.department | Istituto Nazionale di Geofisica, Roma, Italia | en |
| item.openairetype | article | - |
| item.cerifentitytype | Publications | - |
| item.languageiso639-1 | en | - |
| item.grantfulltext | restricted | - |
| item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
| item.fulltext | With Fulltext | - |
| crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italia | - |
| crisitem.author.orcid | 0000-0002-3941-656X | - |
| crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
| crisitem.classification.parent | 04. Solid Earth | - |
| crisitem.classification.parent | 05. General | - |
| Appears in Collections: | Article published / in press | |
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