Abstract
Research Article| December 01, 1979 Possible relationships between changes in global ice volume, geomagnetic excursions, and the eccentricity of the Earth's orbit Michael R. Rampino Michael R. Rampino 1NASA, Goddard Institute for Space Studies, 2880 Broadway, New York, New York 10025 Search for other works by this author on: GSW Google Scholar Author and Article Information Michael R. Rampino 1NASA, Goddard Institute for Space Studies, 2880 Broadway, New York, New York 10025 Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1979) 7 (12): 584–587. https://doi.org/10.1130/0091-7613(1979)7<584:PRBCIG>2.0.CO;2 Article history First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Michael R. Rampino; Possible relationships between changes in global ice volume, geomagnetic excursions, and the eccentricity of the Earth's orbit. Geology 1979;; 7 (12): 584–587. doi: https://doi.org/10.1130/0091-7613(1979)7<584:PRBCIG>2.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract A possible relationship between major changes in global ice volume, geomagnetic variations, and short-term climate cooling has been investigated through a study of climate and geomagnetic records of the past 400,000 yr. Calculations suggest that redistribution of the Earth's water mass can cause rotational instabilities that lead to magnetic excursions; these magnetic variations in turn may lead to rapid coolings through several proposed mechanisms. Such double coincidences of magnetic excursions and sudden cooling and glacial advance at times of major ice-volume changes have occurred at about 13,500, 30,000, 110,000, and 180,000 B.P. The last four and possibly five times of maximum eccentricity of the Earth's orbit were closely followed by magnetic excursions; catastrophic cooling and rapid ice buildup accompanied several of these excursions. Thus, Milankovitch cycle parameters may lead to glaciation through both insolation changes and geomagnetic effects on climate. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.
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