941 resultados para Brill, Paulus, 1554-1625.


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The Paleocene-Eocene Thermal Maximum (PETM) has been attributed to a rapid rise in greenhouse gas levels. If so, warming should have occurred at all latitudes, although amplified toward the poles. Existing records reveal an increase in high-latitude sea surface temperatures (SSTs) (8° to 10°C) and in bottom water temperatures (4° to 5°C). To date, however, the character of the tropical SST response during this event remains unconstrained. Here we address this deficiency by using paired oxygen isotope and minor element (magnesium/calcium) ratios of planktonic foraminifera from a tropical Pacific core to estimate changes in SST. Using mixed-layer foraminifera, we found that the combined proxies imply a 4° to 5°C rise in Pacific SST during the PETM. These results would necessitate a rise in atmospheric pCO2 to levels three to four times as high as those estimated for the late Paleocene.

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Title in red and black. Head and tail pieces.

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Contiene, según consta en portada: Opus elegantissimum / Stanislao Hosio. Parisiis : ex officina Ioannis Foucherij ..., 1559, con port. y pag. propias.

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Reprint. Originally published: London : Privately printed, 1875-1894.

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Mode of access: Internet.

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Mode of access: Internet.