Besonen, M. R., Patridge, W., Bradley, R. S., Francus, P., Stoner, J. and Abbott, M. (2008). A record of climate over the last millennium based on varved lake sediments from the Canadian High Arctic. Special issue in honour of Professor Frank Oldfield. Vol 18(1), pp. 169-180.
 Title The title of the publication or report |
A record of climate over the last millennium based on varved lake sediments from the Canadian High Arctic | ||
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Issue The name of the volume or issue |
Special issue in honour of Professor Frank Oldfield | ||
Series The series the publication or report is included in |
The Holocene | ||
Volume Volume number and part |
18 (1) | ||
Page Start/End The start and end page numbers. |
169 - 180 | ||
Biblio Note This is a Bibliographic record only. |
Please note that this is a bibliographic record only, as originally entered into the BIAB database. The ADS have no files for download, and unfortunately cannot advise further on where to access hard copy or digital versions. | ||
Publication Type The type of publication - report, monograph, journal article or chapter from a book |
Journal | ||
Abstract The abstract describing the content of the publication or report |
a varved sediment record that extends back over the last millennium was recovered from Lower Murray Lake, northern Ellesmere Island, Nunavut, Canada (81°20'N, 69°30'W). Flatbed scan images and backscattered electron images were analysed to provide varve thickness and other quantitative sedimentary indices on an annual basis. In many studies of lakes from the High Arctic, varve thickness is a good proxy for summer temperature and the authors interpret the Lower Murray Lake varves in this way. On that basis, the Lower Murray Lake varve thickness record suggests that summer temperatures in recent decades were among the warmest of the last millennium, comparable with conditions that last occurred in the early twelfth and late thirteenth centuries, but estimates based on the sediment accumulation rate do not show such a recent increase. The coldest conditions of the `Little Ice Age' were experienced from ~AD 1700 to the mid-nineteenth century, when extensive ice cover on the lake led to widespread anoxic conditions in the deepest parts of the lake basin. An overall decline in median grain size over the last 1000 years indicates a reduction in the energy available to transport sediment to the lake. Many of these features of the record are also observed in other palaeoclimatic records from the North American Arctic. The very recent appearance of the diatom Campylodiscus, which was not observed throughout the record of the last millennium, suggests that a new threshold in the ontogenetic development of the lake has now been passed | ||
Year of Publication The year the book, article or report was published |
2008 | ||
Locations Any locations covered by the publication or report. This is not the place the book or report was published. |
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Source Where the record has come from or which dataset it was orginally included in. |
BIAB
(The British & Irish Archaeological Bibliography (BIAB))
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Created Date The date the record of the pubication was first entered |
21 Aug 2008 |
