文章基本信息

标题：Determination of firn density in ice cores using image analysis
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作者：Björn Sjögren ; Ola Brandt ; Chris Nuth 等
期刊名称：Journal of Glaciology
印刷版ISSN：0022-1430
电子版ISSN：1727-5652
出版年度：2007
卷号：53
期号：182
页码：413-419
DOI：10.3189/002214307783258369
出版社：Cambridge University Press
摘要：This study presents a simple and inexpensive method for deriving a high-resolution density proxy record for the firn part of an ice core using digital images. The image data have better resolution and are less sensitive to core quality than is density derived through dielectric profiling (DEP). Simple image analysis is thus suitable to derive a density proxy record in the firn section of ice cores drilled in the percolation or wet snow zone, and to better interpret the results of a DEP record. The images may be used as a permanent record when evaluating other types of ice-core data. Suggestions are provided to improve data quality and decrease post-processing time of the image analysis in future studies.