منابع مشابه
The carbon cycle during the Mid Pleistocene Transition
The carbon cycle during the Mid Pleistocene Transition: the Southern Ocean Decoupling Hypothesis P. Köhler and R. Bintanja Alfred Wegener Institute for Polar and Marine Research, PO Box 120161, 27515 Bremerhaven, Germany KNMI (Royal Netherlands Meteorological Institute), Wilhelminalaan 10, 3732 GK De Bilt, Netherlands Received: 23 June 2008 – Accepted: 24 June 2008 – Published: 9 July 2008 Corr...
متن کاملThe mid-Pleistocene transition in the tropical Pacific.
A sea surface temperature (SST) record based on planktonic foraminiferal magnesium/calcium ratios from a site in the western equatorial Pacific warm pool reveals that glacial-interglacial oscillations in SST shifted from a period of 41,000 to 100,000 years at the mid-Pleistocene transition, 950,000 years before the present. SST changes at both periodicities were synchronous with eastern Pacific...
متن کاملGradual and abrupt changes during the Mid-Pleistocene Transition
During the Mid-Pleistocene Transition (MPT), the dominant glacial-interglacial cyclicity as inferred from the marine d18O records of benthic foraminifera (dObenthic) changed from 41 kyr to 100 kyr years in the absence of a comparable change in orbital forcing. Currently, only two Mg/Ca-derived, high-resolution bottom water temperature (BWT) records exist that can be used with dObenthic records ...
متن کاملTektites and the age paradox in mid-pleistocene china.
The article by Hou Yamei et al. (1), if correct, demonstrates that 800 thousand years ago (ka) people in southern China were making stone tools as sophisticated as any being made in Africa at that time. The basis for that claim is the assumed age of the artifacts found in the sediments of a terrace 25 to 100 m above the present-day Youjiang River, in the Bose basin in the Guangxi Zhuang Autonom...
متن کاملCauses of ice age intensification across the Mid-Pleistocene Transition
During the Mid-Pleistocene Transition (MPT; 1,200-800 kya), Earth's orbitally paced ice age cycles intensified, lengthened from ∼40,000 (∼40 ky) to ∼100 ky, and became distinctly asymmetrical. Testing hypotheses that implicate changing atmospheric CO2 levels as a driver of the MPT has proven difficult with available observations. Here, we use orbitally resolved, boron isotope CO2 data to show t...
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ژورنال
عنوان ژورنال: Oceanography
سال: 2020
ISSN: 1042-8275
DOI: 10.5670/oceanog.2020.216