Models of geomagnetic secular variations on recent times for South America
Palaeosecular variations of the geomagnetic field obtained from palaeomagnetic and radiometric studies carried out on the bottom sediments from three lakes in southwestern Argentina (records extend back to about 6000 years by 14C dating) were compared with results from different theoretical models,...
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1990
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| LEADER | 06461caa a22005657a 4500 | ||
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| 001 | PAPER-543 | ||
| 003 | AR-BaUEN | ||
| 005 | 20251031092332.0 | ||
| 008 | 190411s1990 xx ||||fo|||| 00| 0 eng|d | ||
| 024 | 7 | |2 scopus |a 2-s2.0-0025595866 | |
| 040 | |a Scopus |b spa |c AR-BaUEN |d AR-BaUEN | ||
| 100 | 1 | |a Sinito, Ana María | |
| 245 | 1 | 0 | |a Models of geomagnetic secular variations on recent times for South America |
| 260 | |c 1990 | ||
| 270 | 1 | 0 | |m Sinito, A.M. |
| 504 | |a Alldredge, Hurwitz, Radial dipoles as the sources of the Earth's main magnetic field (1964) Journal of Geophysical Research, 69 (12), pp. 2631-2635 | ||
| 504 | |a Bartels, The eccentric dipole approximation to the Earth's magnetic field (1936) Journal of Geophysical Research, 41, pp. 225-250 | ||
| 504 | |a Barton, Paleomagnetism of lake sediments: results from Australia (1983) Geomagnetism of Baked Clays and Recent Sediments, pp. 235-239. , K.M. Creer, P. Tucholka, C.E. Barton, Elsevier, Amsterdam | ||
| 504 | |a Barton, McElhinny, A 10000 years geomagnetic secular variation record from three Australian Maars (1981) Geophys. J. Roy. Astron. Soc., 67, pp. 465-485 | ||
| 504 | |a Barton, McElhinny, Time series analysis of the 10000 yr geomagnetic secular variation record from SE Australia (1982) Geophys. J. Roy. Astron. Soc., 68, pp. 709-724 | ||
| 504 | |a Creer, Papamarinopoulos, The palaeomagnetism of cave sediments (1983) Geomagnetism of Baked Clays and Recent Sediments, pp. 243-248. , K.M. Creer, P. Tocholka, C.E. Barton, Elsevier, Amsterdam | ||
| 504 | |a Creer, Tucholka, Lake sediments palaeomagnetic research (1983) Geophys. J. Roy. Astron. Soc., 74 (1), pp. 223-238 | ||
| 504 | |a Creer, Valencio, Sinito, Tucholka, Vilas, Geomagnetic secular variations 0–14000 yr BP as recorded by lake sediments from Argentina (1983) Geophys. J. Roy. Astron. Soc., 74 (1), pp. 199-222 | ||
| 504 | |a Hogg, The holocene geomagnetic field in Europe (1978) Thesis, , University of Edinburgh, (unpublished) | ||
| 504 | |a Institute of Geological Sciences, Annual mean values of geomagnetic elements 1978 (1981) Geomagn. Bull. Inst. Geol. Sci., 10, pp. 3-296 | ||
| 504 | |a Lund, Banerjee, Late Quaternary secular variations recorded in central North American wet lake sediments (1983) Geomagnetism of Baked Clays and Recent Sediments, pp. 211-222. , K.M. Creer, P. Tucholka, C.E. Barton, Elsevier, Amsterdam | ||
| 504 | |a Mackereth, A portable core sampler for lake deposits (1958) Limnology and Oceanography, 3, pp. 181-191 | ||
| 504 | |a Mackereth, A short core sampler for subaqueous deposits (1969) Limnology and Oceanography, 14, pp. 145-151 | ||
| 504 | |a Mothersill, Palaeomagnetism of lake sediments: results from the Great Lakes (1983) Geomagnetism of Baked Clays and Recent Sediments, pp. 223-228. , K.M. Creer, P. Tucholka, C.E. Barton, Elsevier, Amsterdam | ||
| 504 | |a Mazzoni, Sinito, Estudio paleomagnético y sedimentológico de ambientes lacustres (1982) Parte II: Lago Moreno, 37, pp. 348-357. , Asoc. Geol. Arg., 3 | ||
| 504 | |a Sinito, Alonso, Ambrosini, Estudio paleomagnético y sedimentológico de ambientes lacustres (1983) Parte III: Lago Nahuel Huapi, Brazo Campanario, 38, pp. 225-234. , Asoc. Geol. Arg., 2 | ||
| 504 | |a Turner, Palaeomagnetic results from recent European sediments (1983) Geomagnetism of Baked Clays and Recent Sediments, pp. 202-211. , K.M. Creer, P. Tucholka, C.E. Barton, Elsevier, Amsterdam | ||
| 504 | |a Valencio, Creer, Sinito, Vilas, Mazzoni, Spalletti, Romero, Fernandez, Estudio paleomagnetico, sedimentológico y palinológico de ambientes lacustres (1982) Parte I: El Trébol, 37, pp. 183-204. , Asoc. Geol. Arg., 2 | ||
| 504 | |a Valencio, Creer, Sinito, Mazzoni, Alonso, Markgraf, Palaeomagnetism, sedimentology, radiocarbon age determinations and palynology of the Llao-Llao area, south-western Argentina (41° S, 71.5° W): paleolimnological aspects (1985) Quat. South America and Antarctic Peninsula, 3, pp. 109-147 | ||
| 506 | |2 openaire |e Política editorial | ||
| 520 | 3 | |a Palaeosecular variations of the geomagnetic field obtained from palaeomagnetic and radiometric studies carried out on the bottom sediments from three lakes in southwestern Argentina (records extend back to about 6000 years by 14C dating) were compared with results from different theoretical models, which suggested the possible sources of the field. Attempts were then made to simulate long period secular variations using modified Alldredge and Hurwitz's models. The Alldredge and Hurwitz model uses a central dipole and eight radial dipoles, all at the same distance from the centre of the Earth, as a first approximation to the sources of the geomagnetic field. The modified models, which have been used to describe the northern hemisphere data, comprise eight radial dipoles, which oscillate sinusoidally and/or drift. The different parameters of the models were fitted to the palaeomagnetic data from southwestern Argentina. The best fit was obtained with a mixed model; between 6000 and 3000 years BP all radial dipoles oscillate and some of them drift as well. Later the drift rates become lower and, finally, between 1700 years BP and present times, all radial dipoles only oscillate. © 1990. |l eng | |
| 593 | |a Consejo Nacional de Investigaciones Cientificas y Técnicas, Facultad de Ciencias Exactas y Naturales, Departamento de Ciencias Geológicas, Ciudad Universitaria, Pabellón II, 1428 Buenos Aires Argentina | ||
| 651 | 4 | |a ARGENTINA | |
| 690 | 1 | 0 | |a ALLDREDGE- HURWITZ MODEL |
| 690 | 1 | 0 | |a GEOMAGNETIC FIELD |
| 690 | 1 | 0 | |a PALAEOMAGNETISM |
| 690 | 1 | 0 | |a SECULAR VARIATION |
| 773 | 0 | |d 1990 |g v. 64 |h pp. 133-142 |k n. 2-4 |p Phys. Earth Planet. Inter. |x 00319201 |w (AR-BaUEN)CENRE-18 |t Physics of the Earth and Planetary Interiors | |
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| 856 | 4 | 0 | |u https://doi.org/10.1016/0031-9201(90)90033-T |y DOI |
| 856 | 4 | 0 | |u https://hdl.handle.net/20.500.12110/paper_00319201_v64_n2-4_p133_Sinito |y Handle |
| 856 | 4 | 0 | |u https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319201_v64_n2-4_p133_Sinito |y Registro en la Biblioteca Digital |
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| 999 | |c 61496 | ||