Signal and noise in four ice-core records from the Agassiz Ice Cap, Ellesmere Island, Canada: details of the last millennium for stable isotopes, melt and solid conductivity
Four ice cores and two deep pit/auger sequences from the top of the Agassiz Ice Cap have been variously analysed for δ(O 18 ), ECM (solid conductivity) and ice melt-layer stratigraphy. The high- resolution data are presented on time scales covering about the last 1000 years. The 8 time series are co...
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Language: | English |
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1994
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Online Access: | http://dx.doi.org/10.1177/095968369400400201 http://journals.sagepub.com/doi/pdf/10.1177/095968369400400201 |
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crsagepubl:10.1177/095968369400400201 2023-05-15T16:00:47+02:00 Signal and noise in four ice-core records from the Agassiz Ice Cap, Ellesmere Island, Canada: details of the last millennium for stable isotopes, melt and solid conductivity Fisher, David A. Koerner, Roy M. 1994 http://dx.doi.org/10.1177/095968369400400201 http://journals.sagepub.com/doi/pdf/10.1177/095968369400400201 en eng SAGE Publications http://journals.sagepub.com/page/policies/text-and-data-mining-license The Holocene volume 4, issue 2, page 113-120 ISSN 0959-6836 1477-0911 Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change journal-article 1994 crsagepubl https://doi.org/10.1177/095968369400400201 2022-08-12T11:31:45Z Four ice cores and two deep pit/auger sequences from the top of the Agassiz Ice Cap have been variously analysed for δ(O 18 ), ECM (solid conductivity) and ice melt-layer stratigraphy. The high- resolution data are presented on time scales covering about the last 1000 years. The 8 time series are compared and the noise examined in terms of snow-drifting and wind-scouring of winter snow from the higher exposed parts of flow lines. The highly scoured 8 records reflect a mixture of summer-biased conditions and the amount of winter-scoured snow. Sites away from the ridges and domes are not scoured. The signal part of the scoured and unscoured sites is obtained by stacking (averaging normalized series). The stacked unscoured series of 8 and accumulation are compared to similar stacked series from central Greenland for the last century of annual averages. The comparison is surprisingly good suggesting that at these resolutions low-noise 8 series have some coherence over fairly large distances. The percentage melt series are presented and compared to those from the Devon Island Ice Cap. Article in Journal/Newspaper Devon Island Ellesmere Island Greenland Ice cap ice core SAGE Publications (via Crossref) Agassiz Ice Cap ENVELOPE(-75.996,-75.996,80.252,80.252) Canada Devon Island ENVELOPE(-88.000,-88.000,75.252,75.252) Ellesmere Island Greenland The Holocene 4 2 113 120 |
institution |
Open Polar |
collection |
SAGE Publications (via Crossref) |
op_collection_id |
crsagepubl |
language |
English |
topic |
Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change |
spellingShingle |
Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change Fisher, David A. Koerner, Roy M. Signal and noise in four ice-core records from the Agassiz Ice Cap, Ellesmere Island, Canada: details of the last millennium for stable isotopes, melt and solid conductivity |
topic_facet |
Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change |
description |
Four ice cores and two deep pit/auger sequences from the top of the Agassiz Ice Cap have been variously analysed for δ(O 18 ), ECM (solid conductivity) and ice melt-layer stratigraphy. The high- resolution data are presented on time scales covering about the last 1000 years. The 8 time series are compared and the noise examined in terms of snow-drifting and wind-scouring of winter snow from the higher exposed parts of flow lines. The highly scoured 8 records reflect a mixture of summer-biased conditions and the amount of winter-scoured snow. Sites away from the ridges and domes are not scoured. The signal part of the scoured and unscoured sites is obtained by stacking (averaging normalized series). The stacked unscoured series of 8 and accumulation are compared to similar stacked series from central Greenland for the last century of annual averages. The comparison is surprisingly good suggesting that at these resolutions low-noise 8 series have some coherence over fairly large distances. The percentage melt series are presented and compared to those from the Devon Island Ice Cap. |
format |
Article in Journal/Newspaper |
author |
Fisher, David A. Koerner, Roy M. |
author_facet |
Fisher, David A. Koerner, Roy M. |
author_sort |
Fisher, David A. |
title |
Signal and noise in four ice-core records from the Agassiz Ice Cap, Ellesmere Island, Canada: details of the last millennium for stable isotopes, melt and solid conductivity |
title_short |
Signal and noise in four ice-core records from the Agassiz Ice Cap, Ellesmere Island, Canada: details of the last millennium for stable isotopes, melt and solid conductivity |
title_full |
Signal and noise in four ice-core records from the Agassiz Ice Cap, Ellesmere Island, Canada: details of the last millennium for stable isotopes, melt and solid conductivity |
title_fullStr |
Signal and noise in four ice-core records from the Agassiz Ice Cap, Ellesmere Island, Canada: details of the last millennium for stable isotopes, melt and solid conductivity |
title_full_unstemmed |
Signal and noise in four ice-core records from the Agassiz Ice Cap, Ellesmere Island, Canada: details of the last millennium for stable isotopes, melt and solid conductivity |
title_sort |
signal and noise in four ice-core records from the agassiz ice cap, ellesmere island, canada: details of the last millennium for stable isotopes, melt and solid conductivity |
publisher |
SAGE Publications |
publishDate |
1994 |
url |
http://dx.doi.org/10.1177/095968369400400201 http://journals.sagepub.com/doi/pdf/10.1177/095968369400400201 |
long_lat |
ENVELOPE(-75.996,-75.996,80.252,80.252) ENVELOPE(-88.000,-88.000,75.252,75.252) |
geographic |
Agassiz Ice Cap Canada Devon Island Ellesmere Island Greenland |
geographic_facet |
Agassiz Ice Cap Canada Devon Island Ellesmere Island Greenland |
genre |
Devon Island Ellesmere Island Greenland Ice cap ice core |
genre_facet |
Devon Island Ellesmere Island Greenland Ice cap ice core |
op_source |
The Holocene volume 4, issue 2, page 113-120 ISSN 0959-6836 1477-0911 |
op_rights |
http://journals.sagepub.com/page/policies/text-and-data-mining-license |
op_doi |
https://doi.org/10.1177/095968369400400201 |
container_title |
The Holocene |
container_volume |
4 |
container_issue |
2 |
container_start_page |
113 |
op_container_end_page |
120 |
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1766396800858587136 |