In search of stratigraphic subdivision of the period 8–0 ka in Greenland ice cores
The δ18O data for the last 8000 years in the Greenland NGRIP1, GRIP, DYE-3 and GISP2 ice cores have been analyzed stratigraphically in search of potentially meaningful boundaries and units. Pattern matching of the profiles is supported by using graphical display enhancements, calculating spectral tr...
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ftdoajarticles:oai:doaj.org/article:4eb07ea867134f0b885589d9f51b94d9 2023-05-15T15:09:40+02:00 In search of stratigraphic subdivision of the period 8–0 ka in Greenland ice cores Matheus G.G. De Jong Arie C. Seijmonsbergen Leo W.S. De Graaff 2019-06-01T00:00:00Z https://doi.org/10.24425/ppr.2019.128367 https://doaj.org/article/4eb07ea867134f0b885589d9f51b94d9 EN eng Polish Academy of Sciences https://journals.pan.pl/Content/111974/PDF/Polish%20Polar%20Res.%202-19%201-M.De%20Jong.pdf https://doaj.org/toc/0138-0338 https://doaj.org/toc/2081-8262 0138-0338 2081-8262 https://doi.org/10.24425/ppr.2019.128367 https://doaj.org/article/4eb07ea867134f0b885589d9f51b94d9 Polish Polar Research, Vol vol. 40, Iss No 2, Pp 55-77 (2019) arctic holocene ice cores stratigraphy pattern matching Geology QE1-996.5 article 2019 ftdoajarticles https://doi.org/10.24425/ppr.2019.128367 2022-12-30T22:45:12Z The δ18O data for the last 8000 years in the Greenland NGRIP1, GRIP, DYE-3 and GISP2 ice cores have been analyzed stratigraphically in search of potentially meaningful boundaries and units. Pattern matching of the profiles is supported by using graphical display enhancements, calculating spectral trend curves and generating a compound profile. Techniques routinely used in subsurface geology have been applied in correlating the profiles. Four major stratigraphic units are identified (8.1–4.9, 4.9–3.3, 3.3–1.9 and 1.9–0.1 ka b2k), resulting in an improved understanding of the climate change after the Holocene Climate Optimum. Correlatable higher-order boundaries are identified within these units. The layers between the boundaries show δ18O patterns which generally are similar in character, the differences being ascribed to lateral variations in the factors that control the isotope content of the ice. The layering forms a series of short-lived low-amplitude aperiodic oscillations on a centennial time scale. The suggestion is that these higher-order boundaries and δ18O oscillations have climatic significance. Equivalent units are tentatively identified in ice-core data from the Agassiz and Renland ice caps. Comparison with other climate proxies or stratigraphies from the Northern Hemisphere is expected to render support for the here proposed scheme. It will then serve to guide and constrain the analysis of the dynamics of the climatic fluctuations for the study period. Article in Journal/Newspaper Arctic Climate change Dye 3 Dye-3 Greenland Greenland ice cores GRIP ice core Polar Research Directory of Open Access Journals: DOAJ Articles Arctic Greenland Renland ENVELOPE(-26.750,-26.750,71.200,71.200) |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
arctic holocene ice cores stratigraphy pattern matching Geology QE1-996.5 |
spellingShingle |
arctic holocene ice cores stratigraphy pattern matching Geology QE1-996.5 Matheus G.G. De Jong Arie C. Seijmonsbergen Leo W.S. De Graaff In search of stratigraphic subdivision of the period 8–0 ka in Greenland ice cores |
topic_facet |
arctic holocene ice cores stratigraphy pattern matching Geology QE1-996.5 |
description |
The δ18O data for the last 8000 years in the Greenland NGRIP1, GRIP, DYE-3 and GISP2 ice cores have been analyzed stratigraphically in search of potentially meaningful boundaries and units. Pattern matching of the profiles is supported by using graphical display enhancements, calculating spectral trend curves and generating a compound profile. Techniques routinely used in subsurface geology have been applied in correlating the profiles. Four major stratigraphic units are identified (8.1–4.9, 4.9–3.3, 3.3–1.9 and 1.9–0.1 ka b2k), resulting in an improved understanding of the climate change after the Holocene Climate Optimum. Correlatable higher-order boundaries are identified within these units. The layers between the boundaries show δ18O patterns which generally are similar in character, the differences being ascribed to lateral variations in the factors that control the isotope content of the ice. The layering forms a series of short-lived low-amplitude aperiodic oscillations on a centennial time scale. The suggestion is that these higher-order boundaries and δ18O oscillations have climatic significance. Equivalent units are tentatively identified in ice-core data from the Agassiz and Renland ice caps. Comparison with other climate proxies or stratigraphies from the Northern Hemisphere is expected to render support for the here proposed scheme. It will then serve to guide and constrain the analysis of the dynamics of the climatic fluctuations for the study period. |
format |
Article in Journal/Newspaper |
author |
Matheus G.G. De Jong Arie C. Seijmonsbergen Leo W.S. De Graaff |
author_facet |
Matheus G.G. De Jong Arie C. Seijmonsbergen Leo W.S. De Graaff |
author_sort |
Matheus G.G. De Jong |
title |
In search of stratigraphic subdivision of the period 8–0 ka in Greenland ice cores |
title_short |
In search of stratigraphic subdivision of the period 8–0 ka in Greenland ice cores |
title_full |
In search of stratigraphic subdivision of the period 8–0 ka in Greenland ice cores |
title_fullStr |
In search of stratigraphic subdivision of the period 8–0 ka in Greenland ice cores |
title_full_unstemmed |
In search of stratigraphic subdivision of the period 8–0 ka in Greenland ice cores |
title_sort |
in search of stratigraphic subdivision of the period 8–0 ka in greenland ice cores |
publisher |
Polish Academy of Sciences |
publishDate |
2019 |
url |
https://doi.org/10.24425/ppr.2019.128367 https://doaj.org/article/4eb07ea867134f0b885589d9f51b94d9 |
long_lat |
ENVELOPE(-26.750,-26.750,71.200,71.200) |
geographic |
Arctic Greenland Renland |
geographic_facet |
Arctic Greenland Renland |
genre |
Arctic Climate change Dye 3 Dye-3 Greenland Greenland ice cores GRIP ice core Polar Research |
genre_facet |
Arctic Climate change Dye 3 Dye-3 Greenland Greenland ice cores GRIP ice core Polar Research |
op_source |
Polish Polar Research, Vol vol. 40, Iss No 2, Pp 55-77 (2019) |
op_relation |
https://journals.pan.pl/Content/111974/PDF/Polish%20Polar%20Res.%202-19%201-M.De%20Jong.pdf https://doaj.org/toc/0138-0338 https://doaj.org/toc/2081-8262 0138-0338 2081-8262 https://doi.org/10.24425/ppr.2019.128367 https://doaj.org/article/4eb07ea867134f0b885589d9f51b94d9 |
op_doi |
https://doi.org/10.24425/ppr.2019.128367 |
_version_ |
1766340813152845824 |