학술논문

High-frequency Holocene glacier fluctuations in New Zealand differ from the Northern signature
Document Type
Author abstract
Report
Source
Science. May 1, 2009, Vol. 324 Issue 5927, p622, 4 p.
Subject
New Zealand
Language
English
ISSN
0036-8075
Abstract
Understanding the timings of interhemispheric climate changes during the Holocene, along with their causes, remains a major problem of climate science. Here, we present a high-resolution [sup.10]Be chronology of glacier fluctuations in New Zealand's Southern Alps over the past 7000 years, including at least tire events during the last millennium. The extents of glacier advances decreased from the middle to the late Holocene, in contrast with the Northern Hemisphere pattern. Several glacier advances occurred in New Zealand during classic northern warm periods. These findings point to the importance of regional driving and/or amplifying mechanisms. We suggest that atmospheric circulation changes in the southwest Pacific were one important factor in forcing high-frequency Holocene glacier fluctuations in New Zealand.