Variations in melt-layer frequency in the GISP2 ice core

implications for Holocene summer temperatures in central Greenland

Research output: Contribution to journalArticle

66 Citations (Scopus)

Abstract

The rare melt features in the GISP2, central Greenland deep ice core have decreased in frequency over the most recent 7000 year. Calibration of this change in melt frequency against modern spatial and temporal variation of melt frequency and temperatures in central Greenland, indicates that mean mid-summer temperatures have cooled over the most recent 7000 years by slightly more than 1°C. Comparison to GRIP isotopic records from central Greenland and to the melt record from the Agassiz Ice Cap, Arctic Canada, suggests some seasonal and regional coherence for this cooling signal, as well as for a cold event about 8000-8500 BP. -from Authors

Original languageEnglish (US)
Pages (from-to)64-70
Number of pages7
JournalAnnals of Glaciology
Volume21
StatePublished - Jan 1 1995

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ice core
Holocene
melt
summer
temperature
GRIP
ice cap
temporal variation
spatial variation
calibration
cooling

All Science Journal Classification (ASJC) codes

  • Earth-Surface Processes

Cite this

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abstract = "The rare melt features in the GISP2, central Greenland deep ice core have decreased in frequency over the most recent 7000 year. Calibration of this change in melt frequency against modern spatial and temporal variation of melt frequency and temperatures in central Greenland, indicates that mean mid-summer temperatures have cooled over the most recent 7000 years by slightly more than 1°C. Comparison to GRIP isotopic records from central Greenland and to the melt record from the Agassiz Ice Cap, Arctic Canada, suggests some seasonal and regional coherence for this cooling signal, as well as for a cold event about 8000-8500 BP. -from Authors",
author = "Alley, {Richard B.} and Sridhar Anandakrishnan",
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AU - Anandakrishnan, Sridhar

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N2 - The rare melt features in the GISP2, central Greenland deep ice core have decreased in frequency over the most recent 7000 year. Calibration of this change in melt frequency against modern spatial and temporal variation of melt frequency and temperatures in central Greenland, indicates that mean mid-summer temperatures have cooled over the most recent 7000 years by slightly more than 1°C. Comparison to GRIP isotopic records from central Greenland and to the melt record from the Agassiz Ice Cap, Arctic Canada, suggests some seasonal and regional coherence for this cooling signal, as well as for a cold event about 8000-8500 BP. -from Authors

AB - The rare melt features in the GISP2, central Greenland deep ice core have decreased in frequency over the most recent 7000 year. Calibration of this change in melt frequency against modern spatial and temporal variation of melt frequency and temperatures in central Greenland, indicates that mean mid-summer temperatures have cooled over the most recent 7000 years by slightly more than 1°C. Comparison to GRIP isotopic records from central Greenland and to the melt record from the Agassiz Ice Cap, Arctic Canada, suggests some seasonal and regional coherence for this cooling signal, as well as for a cold event about 8000-8500 BP. -from Authors

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