976 resultados para Brune, Guillaume-Marie-Anne, 1763-1815
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Resumen: Descripción: retrato de Ana Grant de tres cuartos de figura mirando de frente y con unas gafas en la mano
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Significant uncertainties persist in the reconstruction of past sea surface temperatures in the eastern equatorial Pacific, especially regarding the amplitude of the glacial cooling and the details of the post-glacial warming. Here we present the first regional calibration of alkenone unsaturation in surface sediments versus mean annual sea surface temperatures (maSST). Based on 81 new and 48 previously published data points, it is shown that open ocean samples conform to established global regressions of Uk'37 versus maSST and that there is no systematic bias from seasonality in the production or export of alkenones, or from surface ocean nutrient concentrations or salinity. The flattening of the regression at the highest maSSTs is found to be statistically insignificant. For the near-coastal Peru upwelling zone between 11-15°S and 76-79°W, however, we corroborate earlier observations that Uk'37 SST estimates significantly over-estimate maSSTs at many sites. We posit that this is caused either by uncertainties in the determination of maSSTs in this highly dynamic environment, or by biasing of the alkenone paleothermometer toward El Niño events as postulated by Rein et al. (2005).
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Includes index.
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Index B: Table chronologique des ordonnances des rois de France de la troisième race jusqu'au règne de Louis XII inclusivement, suivie d'une table alphabétique pour en faciliter l'usage, par J. M. Pardessus ... . Paris, Imprimerie royale, 1847. 2 p. l., viii, 607 p. 40 cm.
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Bibliographical foot-notes.
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Gift of Mrs. W. E. Swigart.
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"Avant-propos de l'éditeur" signed: A. Cornet-Peyrusse.
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"The case concerns the estate of Pierre Foretier, d. Dec. 3, 1815."--Toronto Public Library. A bibliography of Canadiana, no. 1471.
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Contiene: Premiere partie, Suite du Livre XIV et de la description des pays qui bordent la cote orientale d'Afrique, depuis le cap de Bonne-Esperance jusqu'au cap de Guardasu. - Premiere partie, Voyages dans l'Asie, Livre I, Voyages dans l'Empire de la Chine. - [Se incluyen los relatos de Kolben en 1713, Hamilton 1720, Faria 1569, Nieuhof 1655-57].
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Mode of access: Internet.
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Mode of access: Internet.
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Mode of access: Internet.
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Mode of access: Internet.
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Mode of access: Internet.
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Mode of access: Internet.