Millennial-scale climate variability during the Last Glacial period in the tropical Andes
نویسندگان
چکیده
منابع مشابه
Timing of millennial-scale climate change in Antarctica and Greenland during the last glacial period.
A precise relative chronology for Greenland and West Antarctic paleotemperature is extended to 90,000 years ago, based on correlation of atmospheric methane records from the Greenland Ice Sheet Project 2 and Byrd ice cores. Over this period, the onset of seven major millennial-scale warmings in Antarctica preceded the onset of Greenland warmings by 1500 to 3000 years. In general, Antarctic temp...
متن کاملThomas Blunier , Period Antarctica and Greenland During the Last Glacial Timing of Millennial - Scale Climate
http://www.sciencemag.org/cgi/content/full/291/5501/109 version of this article at: including high-resolution figures, can be found in the online Updated information and services, http://www.sciencemag.org/cgi/content/full/291/5501/109/DC1 can be found at: Supporting Online Material found at: can be related to this article A list of selected additional articles on the Science Web sites http://w...
متن کاملWas millennial scale climate change during the Last Glacial triggered by explosive volcanism?
The mechanisms responsible for millennial scale climate change within glacial time intervals are equivocal. Here we show that all eight known radiometrically-dated Tambora-sized or larger NH eruptions over the interval 30 to 80 ka BP are associated with abrupt Greenland cooling (>95% confidence). Additionally, previous research reported a strong statistical correlation between the timing of Sou...
متن کاملBipolar modulation of millennial-scale West African monsoon variability during the last glacial (75,000e25,000 years ago)
Time series of planktonic foraminiferal d18O and Ba/Ca-based sea surface salinity (SSS) estimates from the eastern Gulf of Guinea (eastern equatorial Atlantic) indicate changes in runoff that reflect variability of spatially integrated precipitation over the equatorial West African monsoon area. Millennial-scale and recurring runoff-induced SSS rises and declines in the range of 1.5 and 2 psu (...
متن کاملEarly local last glacial maximum in the tropical Andes.
The local last glacial maximum in the tropical Andes was earlier and less extensive than previously thought, based on 106 cosmogenic ages (from beryllium-10 dating) from moraines in Peru and Bolivia. Glaciers reached their greatest extent in the last glacial cycle approximately 34,000 years before the present and were retreating by approximately 21,000 years before the present, implying that tr...
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ژورنال
عنوان ژورنال: Quaternary Science Reviews
سال: 2010
ISSN: 0277-3791
DOI: 10.1016/j.quascirev.2010.01.001