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Title:
Reanalysis of ancient eclipse, astronomic and geodetic data: A possible route to resolving the enigma of global sea-level rise
Authors:
Mitrovica, Jerry X.; Wahr, John; Matsuyama, Isamu; Paulson, Archie; Tamisiea, Mark E.
Affiliation:
AA(Department of Physics, University of Toronto, 60 St. George Street, Toronto, Canada M5S 1A7), AB(Department of Physics and CIRES, Campus Box 390, University of Colorado, Boulder, CO, 80309, USA), AC(Department of Terrestrial Magnetism, Carnegie Institution of Washington, 5241 Broad Branch Road, Washington, DC, 20015, USA), AD(Department of Physics and CIRES, Campus Box 390, University of Colorado, Boulder, CO, 80309, USA), AE(Harvard-Smithsonian Center for Astrophysics, 60 Garden Street MS42, Cambridge MA, 02138, USA)
Publication:
Earth and Planetary Science Letters, Volume 243, Issue 3-4, p. 390-399. (E&PSL Homepage)
Publication Date:
03/2006
Origin:
ELSEVIER
DOI:
10.1016/j.epsl.2005.12.029
Bibliographic Code:
2006E&PSL.243..390M

Abstract

Predictions of the Earth's response to the ice age appear to simultaneously reconcile a set of astronomical, geodetic and ancient eclipse observations related to changes in rotation, thus ruling out ice melting as a major contributor to 20th century sea-level rise. We demonstrate that the reconciliation disappears when an improved theory of rotational stability is applied. Furthermore, our reanalysis of longer satellite records renders previous estimates of the secular change in rotation rate suspect. The updated ice-age predictions and observations permit an anomalous 20th century ice flux of ˜1 mm/yr equivalent sea-level rise. Thus, the full suite of Earth rotation observations are consistent with a connection between climatic warming and recent melting of ice reservoirs.
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