-
1
-
-
0028315242
-
-
D. Gubbins, Rev. Geophys. 32, 61 (1994); C. G. A. Harrison, J. Geomagn. Geoelectr. 47, 131 (1995).
-
(1994)
Rev. Geophys.
, vol.32
, pp. 61
-
-
Gubbins, D.1
-
3
-
-
9444288556
-
-
note
-
In the literature, no clear physical distinction is made between secular and paleosecular variation processes. According to the model presented in this report, the paleosecular variation is the sum of SV and a slower variation of the AD.
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-
-
-
4
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0021597888
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R. S. Coe, S. Grommé, E. A. Mankinen, J. Geophys. Res. 89, 1059 (1984); M. Marshall, A. Chauvin, N. Bonhommet, ibid. 93, 11681 (1988); P. Roperch, N. Bonhommet, S. Levi, Earth Planet. Sci. Lett. 88, 209 (1988); S. Levi et al., ibid. 96, 443 (1990).
-
(1984)
J. Geophys. Res.
, vol.89
, pp. 1059
-
-
Coe, R.S.1
Grommé, S.2
Mankinen, E.A.3
-
5
-
-
0024252641
-
-
R. S. Coe, S. Grommé, E. A. Mankinen, J. Geophys. Res. 89, 1059 (1984); M. Marshall, A. Chauvin, N. Bonhommet, ibid. 93, 11681 (1988); P. Roperch, N. Bonhommet, S. Levi, Earth Planet. Sci. Lett. 88, 209 (1988); S. Levi et al., ibid. 96, 443 (1990).
-
(1988)
J. Geophys. Res.
, vol.93
, pp. 11681
-
-
Marshall, M.1
Chauvin, A.2
Bonhommet, N.3
-
6
-
-
0023685286
-
-
R. S. Coe, S. Grommé, E. A. Mankinen, J. Geophys. Res. 89, 1059 (1984); M. Marshall, A. Chauvin, N. Bonhommet, ibid. 93, 11681 (1988); P. Roperch, N. Bonhommet, S. Levi, Earth Planet. Sci. Lett. 88, 209 (1988); S. Levi et al., ibid. 96, 443 (1990).
-
(1988)
Earth Planet. Sci. Lett.
, vol.88
, pp. 209
-
-
Roperch, P.1
Bonhommet, N.2
Levi, S.3
-
7
-
-
0025251350
-
-
R. S. Coe, S. Grommé, E. A. Mankinen, J. Geophys. Res. 89, 1059 (1984); M. Marshall, A. Chauvin, N. Bonhommet, ibid. 93, 11681 (1988); P. Roperch, N. Bonhommet, S. Levi, Earth Planet. Sci. Lett. 88, 209 (1988); S. Levi et al., ibid. 96, 443 (1990).
-
(1990)
Earth Planet. Sci. Lett.
, vol.96
, pp. 443
-
-
Levi, S.1
-
8
-
-
0022205924
-
-
M. Prévot, E. A. Mankinen, R. S. Coe, C. S. Grommé, J. Geophys. Res. 90, 10417 (1985).
-
(1985)
J. Geophys. Res.
, vol.90
, pp. 10417
-
-
Prévot, M.1
Mankinen, E.A.2
Coe, R.S.3
Grommé, C.S.4
-
11
-
-
0012276681
-
-
K. A. Huffman, Science 196, 1329 (1977); I. Williams and M. Fuller, J. Geophys. Res. 86, 11657 (1981); D. Gubbins and R. S. Coe, Nature 362, 51 (1993).
-
(1977)
Science
, vol.196
, pp. 1329
-
-
Huffman, K.A.1
-
12
-
-
0019700446
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-
K. A. Huffman, Science 196, 1329 (1977); I. Williams and M. Fuller, J. Geophys. Res. 86, 11657 (1981); D. Gubbins and R. S. Coe, Nature 362, 51 (1993).
-
(1981)
J. Geophys. Res.
, vol.86
, pp. 11657
-
-
Williams, I.1
Fuller, M.2
-
13
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0027470307
-
-
K. A. Huffman, Science 196, 1329 (1977); I. Williams and M. Fuller, J. Geophys. Res. 86, 11657 (1981); D. Gubbins and R. S. Coe, Nature 362, 51 (1993).
-
(1993)
Nature
, vol.362
, pp. 51
-
-
Gubbins, D.1
Coe, R.S.2
-
14
-
-
0025207237
-
-
C. Constable, J. Geophys. Res. 95, 4587 (1990); C. Mary and V. Courtillot, ibid. 98, 22461 (1993).
-
(1990)
J. Geophys. Res.
, vol.95
, pp. 4587
-
-
Constable, C.1
-
16
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-
9444229772
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thesis, Australian National University, Canberra
-
S. Lee, thesis, Australian National University, Canberra (1983).
-
(1983)
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-
Lee, S.1
-
17
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0028573913
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-
X. Quidelleur, J. P. Valet, V. Courtillot, G. Hulot, Geophys. Res. Lett. 21, 1639 (1994); C. L. Johnson and C, G. Constable, Philos. Trans. R. Soc. London Ser. A 354, 89 (1996).
-
(1994)
Geophys. Res. Lett.
, vol.21
, pp. 1639
-
-
Quidelleur, X.1
Valet, J.P.2
Courtillot, V.3
Hulot, G.4
-
18
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-
3242766231
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-
X. Quidelleur, J. P. Valet, V. Courtillot, G. Hulot, Geophys. Res. Lett. 21, 1639 (1994); C. L. Johnson and C, G. Constable, Philos. Trans. R. Soc. London Ser. A 354, 89 (1996).
-
(1996)
Philos. Trans. R. Soc. London Ser. A
, vol.354
, pp. 89
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-
Johnson, C.L.1
Constable, C.G.2
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19
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9444296391
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note
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For each flow, we calculated the average direction and remanence intensity after alternating field-cleaning at 10 mT or more. The proportionality between this remanence and the paleofield intensity holds if (i) the primary remanence is a thermoremanent magnetization, which is believed to be the case for basaltic rocks; (ii) secondary magnetizations are absent or were destroyed by the cleaning treatment; and (iii) the effects of mineralogical variations (from one flow to the other) on remanence intensity are averaged out. For the best documented region (Iceland), we demonstrate (in P. Camps and M. Prévot, in preparation) that the viscous secondary remanence left after treatment is negligible. The effects of mineralogical variations are almost entirely averaged out (Figs. 1C and 3C), as attested by the small dispersion of data (all calculated from distinct classes). The database is available through anonymous FTP at ftp.dstu.univ-montp2.fr; use your e-mail address as the password and type cd pub/paleomag.
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20
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84981751597
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A. Cox, Geophys. J. R. Astron. Soc. 8, 345 (1964). This is the best estimate for κ(which is an inverse measure of the sample dispersion) when the distribution is non-Fisherian.
-
(1964)
Geophys. J. R. Astron. Soc.
, vol.8
, pp. 345
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-
Cox, A.1
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21
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85040956613
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-
Cambridge Univ. Press, Cambridge
-
n, as described in Statistical Analysis of Spherical Data. N.I. Fisher, T. Lewis, B. J. J. Embleton, Eds. (Cambridge Univ. Press, Cambridge, 1987), p. 165.
-
(1987)
Statistical Analysis of Spherical Data
, pp. 165
-
-
Fisher, N.I.1
Lewis, T.2
Embleton, B.J.J.3
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22
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-
84950622021
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-
The formal testing procedures are given in (13), p. 122: see also M. A. Stephens, J. Am. Stat. Assoc. 69, 730 (1974). All formal tests (Kolmogorov, Cramer, Kuiper, Watson) strongly reject the Fisher distribution hypothesis (at 99% confidence).
-
(1974)
J. Am. Stat. Assoc.
, vol.69
, pp. 730
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-
Stephens, M.A.1
-
26
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-
84984420077
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-
R. L. Wilson, P. Dagley, A. G. McCormack, ibid. 28, 213 (1972); L. Kristjansson and I. McDougall, ibid. 68, 273 (1982); J. L. Lin, K. L. Verosub, A. P. Roberts, Geophys. Res. Lett. 21, 525 (1994).
-
(1972)
Geophys. J. R. Astron. Soc.
, vol.28
, pp. 213
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-
Wilson, R.L.1
Dagley, P.2
McCormack, A.G.3
-
27
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-
0019909887
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R. L. Wilson, P. Dagley, A. G. McCormack, ibid. 28, 213 (1972); L. Kristjansson and I. McDougall, ibid. 68, 273 (1982); J. L. Lin, K. L. Verosub, A. P. Roberts, Geophys. Res. Lett. 21, 525 (1994).
-
(1982)
Geophys. J. R. Astron. Soc.
, vol.68
, pp. 273
-
-
Kristjansson, L.1
McDougall, I.2
-
28
-
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0028193953
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-
R. L. Wilson, P. Dagley, A. G. McCormack, ibid. 28, 213 (1972); L. Kristjansson and I. McDougall, ibid. 68, 273 (1982); J. L. Lin, K. L. Verosub, A. P. Roberts, Geophys. Res. Lett. 21, 525 (1994).
-
(1994)
Geophys. Res. Lett.
, vol.21
, pp. 525
-
-
Lin, J.L.1
Verosub, K.L.2
Roberts, A.P.3
-
30
-
-
3543106368
-
-
Kotz et al., Eds. Wiley, New York
-
K. Hirano, in Encyclopedia of Statistical Sciences, Kotz et al., Eds. (Wiley, New York, 1982), vol, 7, pp. 647-649.
-
(1982)
Encyclopedia of Statistical Sciences
, vol.7
, pp. 647-649
-
-
Hirano, K.1
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31
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0004229108
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Academic Press, London
-
AD = 0. See, for example, K, V. Mardia, in Statistics of Directional Data, (Academic Press, London, 1972), pp. 232-233. The shape of the observed distribution of directions could be fitted by a Bingham distribution.
-
(1972)
Statistics of Directional Data
, pp. 232-233
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Mardia, K.V.1
-
32
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0024251170
-
-
P, L. McFadden, R. T. Merril, M. W. McElhinny, J. Geophys. Res. 93, 11583 (1988).
-
(1988)
J. Geophys. Res.
, vol.93
, pp. 11583
-
-
McFadden, P.L.1
Merril, R.T.2
McElhinny, M.W.3
-
36
-
-
0025225008
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-
M. Prévot, M. E. M, Derder. M. McWilliams, J. Thompson, Earth Planet. Sci. Lett. 97, 129 (1990).
-
(1990)
Earth Planet. Sci. Lett.
, vol.97
, pp. 129
-
-
Prévot, M.1
Derder, M.E.M.2
McWilliams, M.3
Thompson, J.4
-
39
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9444243711
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note
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We thank D. K. Bingham, S. C. Bogue, E. Mankinen, P. Roperch, and H. Shibuya for providing unpublished paleomagnetic data and R. Coe for reviewing the first version of this manuscript. This research was completed while P.C. held the position of postdoctoral researcher at the University of California, Santa Cruz, supported by a Ministère de l'Enseignement Supérieur et de la Recherche grant. Contribution CNRS-INSU-DBT "Terre Profonde" 55.
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