Concerning the deposition and diagenesis of strata in polar firn

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Abstract

Depth hoar in polar firn forms when large temperature gradients act on low-density firn, but high-density firn does not develop into depth hoar. Low densities in firn may be depositional (burial of surface hoar or still-air snowfall) or diagenetic (mass loss to the free atmosphere, typically in autumn); however, diagenesis is sufficiently strong to cause significant mass loss only in the top 500-100 mm of firn. Diagenetic depth-hoar layers typically develop in the autumn, are relatively thick, and have smooth bases. Depositional depth-hoar layers may develop at any season, are relatively thin, and have irregular bases. -from Author

Original languageEnglish (US)
Pages (from-to)283-290
Number of pages8
JournalJournal of Glaciology
Volume34
Issue number118
DOIs
StatePublished - 1988

All Science Journal Classification (ASJC) codes

  • Earth-Surface Processes

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