Regional Radiocarbon Effect Due to Thawing of Frozen Earth
Accelerator mass spectrometry (AMS) measurement of 25 single-year tree rings from AD 1861–1885 at ca. ±3.5‰ precision shows no evidence of an anomalous 11-yr cycle of 14 C near the Arctic Circle in the Mackenzie River area. However, the Δ 14 C measurements are lower on average by 2.7 ± 0.9 (ō)‰ rela...
Published in: | Radiocarbon |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Cambridge University Press (CUP)
1996
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1017/s0033822200030125 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033822200030125 |
id |
crcambridgeupr:10.1017/s0033822200030125 |
---|---|
record_format |
openpolar |
spelling |
crcambridgeupr:10.1017/s0033822200030125 2024-04-28T08:10:24+00:00 Regional Radiocarbon Effect Due to Thawing of Frozen Earth Damon, P. E. Burr, George Peristykh, A. N. Jacoby, G. C. D'Arrigo, R. D. 1996 http://dx.doi.org/10.1017/s0033822200030125 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033822200030125 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Radiocarbon volume 38, issue 3, page 597-602 ISSN 0033-8222 1945-5755 General Earth and Planetary Sciences Archeology journal-article 1996 crcambridgeupr https://doi.org/10.1017/s0033822200030125 2024-04-09T06:55:21Z Accelerator mass spectrometry (AMS) measurement of 25 single-year tree rings from AD 1861–1885 at ca. ±3.5‰ precision shows no evidence of an anomalous 11-yr cycle of 14 C near the Arctic Circle in the Mackenzie River area. However, the Δ 14 C measurements are lower on average by 2.7 ± 0.9 (ō)‰ relative to 14 C measurements on tree rings from the Pacific Northwest (Stuiver and Braziunas 1993). We attribute this depression of Δ 14 C to thawing of the ice and snow cover followed by melting of frozen earth that releases trapped 14 C-depleted CO 2 to the atmosphere during the short growing season from May through August. Correlation of Δ 14 C with May–August estimated temperatures yields a correlation index of r = 0.60. The reduction in Δ 14 C is dominated by seven years of anomalous depletion. These years are 1861, 1867–1869, 1879–1880 and 1883. The years 1867–1869 are coincident with a very strong ENSO event. Article in Journal/Newspaper Arctic Mackenzie river Cambridge University Press Radiocarbon 38 3 597 602 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
General Earth and Planetary Sciences Archeology |
spellingShingle |
General Earth and Planetary Sciences Archeology Damon, P. E. Burr, George Peristykh, A. N. Jacoby, G. C. D'Arrigo, R. D. Regional Radiocarbon Effect Due to Thawing of Frozen Earth |
topic_facet |
General Earth and Planetary Sciences Archeology |
description |
Accelerator mass spectrometry (AMS) measurement of 25 single-year tree rings from AD 1861–1885 at ca. ±3.5‰ precision shows no evidence of an anomalous 11-yr cycle of 14 C near the Arctic Circle in the Mackenzie River area. However, the Δ 14 C measurements are lower on average by 2.7 ± 0.9 (ō)‰ relative to 14 C measurements on tree rings from the Pacific Northwest (Stuiver and Braziunas 1993). We attribute this depression of Δ 14 C to thawing of the ice and snow cover followed by melting of frozen earth that releases trapped 14 C-depleted CO 2 to the atmosphere during the short growing season from May through August. Correlation of Δ 14 C with May–August estimated temperatures yields a correlation index of r = 0.60. The reduction in Δ 14 C is dominated by seven years of anomalous depletion. These years are 1861, 1867–1869, 1879–1880 and 1883. The years 1867–1869 are coincident with a very strong ENSO event. |
format |
Article in Journal/Newspaper |
author |
Damon, P. E. Burr, George Peristykh, A. N. Jacoby, G. C. D'Arrigo, R. D. |
author_facet |
Damon, P. E. Burr, George Peristykh, A. N. Jacoby, G. C. D'Arrigo, R. D. |
author_sort |
Damon, P. E. |
title |
Regional Radiocarbon Effect Due to Thawing of Frozen Earth |
title_short |
Regional Radiocarbon Effect Due to Thawing of Frozen Earth |
title_full |
Regional Radiocarbon Effect Due to Thawing of Frozen Earth |
title_fullStr |
Regional Radiocarbon Effect Due to Thawing of Frozen Earth |
title_full_unstemmed |
Regional Radiocarbon Effect Due to Thawing of Frozen Earth |
title_sort |
regional radiocarbon effect due to thawing of frozen earth |
publisher |
Cambridge University Press (CUP) |
publishDate |
1996 |
url |
http://dx.doi.org/10.1017/s0033822200030125 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033822200030125 |
genre |
Arctic Mackenzie river |
genre_facet |
Arctic Mackenzie river |
op_source |
Radiocarbon volume 38, issue 3, page 597-602 ISSN 0033-8222 1945-5755 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0033822200030125 |
container_title |
Radiocarbon |
container_volume |
38 |
container_issue |
3 |
container_start_page |
597 |
op_container_end_page |
602 |
_version_ |
1797578296863490048 |