Abrupt Climate Oscillations During the Last Deglaciation in Central North America
Zicheng Yu,
*
Ulrich Eicher
Evidence from stable isotopes and a variety of proxies from two
Ontario lakes demonstrate that many of the late
glacial-to-early Holocene events that are well known from the
North Atlantic seaboard, such as the Gerzensee-Killarney Oscillation
(also known as the Intra-Allerød Cold Period), Younger Dryas, and
Preboreal Oscillation, also occurred in central North America. These
results thus imply that climatic forcing acted in the same manner in
both regions and that atmospheric circulation played an important role
in the propagation of these events.
Z. C. Yu, Department of Botany, University of Toronto,
Toronto, Ontario M5S 3B2, Canada, and Centre for Biodiversity and
Conservation Biology; Royal Ontario Museum, Toronto, Ontario M5S 2C6,
Canada. U. Eicher, Climate and Environmental Physics, Physics
Institute, University of Bern, CH-3012 Bern, Switzerland.
*
To whom correspondence should be addressed at the Canadian Forest
Service, 5320 122 Street, Edmonton, Alberta T6H 3S5, Canada. E-mail: zyu{at}nrcan.gc.ca
