Western Canadian glaciers advance in concert with climate change circa 4.2 ka
Article first published online: 4 APR 2008
Copyright 2008 by the American Geophysical Union.
Geophysical Research Letters
Volume 35, Issue 7, April 2008
How to Cite
2008), Western Canadian glaciers advance in concert with climate change circa 4.2 ka, Geophys. Res. Lett., 35, L07501, doi:10.1029/2008GL033172., , , , , and (
- Issue published online: 4 APR 2008
- Article first published online: 4 APR 2008
- Manuscript Accepted: 5 MAR 2008
- Manuscript Revised: 18 FEB 2008
- Manuscript Received: 3 JAN 2008
- abrupt climate change;
- glacier fluctuations
 Disparate climate proxies from the Northern Hemisphere record a climate event at 4.2–3.8 ka. Here we show that glaciers throughout the mountain ranges of western Canada advanced at about this time. This conclusion is based on (1) new and previously reported radiocarbon ages on in situ stumps, logs, branches, and soils exposed by recent retreat in glacier forefields and (2) clastic-rich sediment intervals in cores retrieved from four montane lakes. These glacier and lacustrine data indicate a period of several decades to century length when climate conditions (cool summers, wet winters or both) favoured glacier nourishment and advance across western Canada.