Glacial flow of floating marine ice in ``Snowball Earth''

Details Glacial flow of floating marine ice in ``Snowball Earth'' Glacial flow of floating marine ice in ``Snowball Earth''

Oct 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003jgrc..108.3308g&link_type=abstract

Journal of Geophysical Research, Volume 108, Issue C10, pp. 6-1, CiteID 3308, DOI 10.1029/2002JC001471

Mathematics

Logic

22

Information Related To Geologic Time: Precambrian, Global Change: Climate Dynamics (3309), Planetary Sciences: Glaciation, Meteorology And Atmospheric Dynamics: Paleoclimatology

Scientific paper

Simulations of frigid Neoproterozoic climates have not considered the tendency of thick layers of floating marine ice to deform and spread laterally. We have constructed a simple model of the production and flow of marine ice on a planetary scale, and determined ice thickness and flow in two situations: when the ocean is globally ice-covered (``hard snowball'') and when the tropical waters remain open (``soft snowball''). In both cases, ice flow strongly affects the distribution of marine ice. Flowing ice probably carries enough latent heat and freshwater to significantly affect the transition into a Snowball Earth climate. We speculate that flowing marine ice, rather than continental ice sheets, may be the erosive agent that created some Neoproterozoic glacial deposits.

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