Meteoric smoke concentration in the Vostok ice core estimated from superparamagnetic relaxation and some consequences for estimates of Earth accretion rate
We measured the magnetization of glacial and interglacial ice from the Vostok core to estimate the meteoric smoke concentration in Antarctic ice. We have found that, within the uncertainty of the method, the smoke concentration in ice in Antarctica is equivalent to that previously measured in Greenl...
Published in: | Geophysical Research Letters |
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Online Access: | http://hdl.handle.net/11576/1882931 https://doi.org/10.1029/2007GL029811 |
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ftunivurbino:oai:ora.uniurb.it:11576/1882931 2024-04-14T08:03:31+00:00 Meteoric smoke concentration in the Vostok ice core estimated from superparamagnetic relaxation and some consequences for estimates of Earth accretion rate LANCI, LUCA D. V. KENT P. E. BISCAYE Lanci, Luca D. V., Kent P. E., Biscaye 2007 STAMPA http://hdl.handle.net/11576/1882931 https://doi.org/10.1029/2007GL029811 eng eng info:eu-repo/semantics/altIdentifier/wos/000246838300004 volume:34 issue:L10803 firstpage:1 lastpage:4 numberofpages:4 journal:GEOPHYSICAL RESEARCH LETTERS http://hdl.handle.net/11576/1882931 doi:10.1029/2007GL029811 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-34447562923 info:eu-repo/semantics/article 2007 ftunivurbino https://doi.org/10.1029/2007GL029811 2024-03-21T17:00:29Z We measured the magnetization of glacial and interglacial ice from the Vostok core to estimate the meteoric smoke concentration in Antarctic ice. We have found that, within the uncertainty of the method, the smoke concentration in ice in Antarctica is equivalent to that previously measured in Greenland ice. The virtually identical smoke concentrations despite the different ice accumulation rates in Greenland and Antarctica suggest that wet deposition is the main deposition mechanism for such ultra-small particles. Given the typical scavenging ratios for atmospheric aerosols, this would imply that previous estimates of accretion rate based on dry deposition are likely to be appreciably overestimated. Article in Journal/Newspaper Antarc* Antarctic Antarctica Greenland ice core Università degli Studi di Urbino: CINECA IRIS Antarctic Greenland Geophysical Research Letters 34 10 |
institution |
Open Polar |
collection |
Università degli Studi di Urbino: CINECA IRIS |
op_collection_id |
ftunivurbino |
language |
English |
description |
We measured the magnetization of glacial and interglacial ice from the Vostok core to estimate the meteoric smoke concentration in Antarctic ice. We have found that, within the uncertainty of the method, the smoke concentration in ice in Antarctica is equivalent to that previously measured in Greenland ice. The virtually identical smoke concentrations despite the different ice accumulation rates in Greenland and Antarctica suggest that wet deposition is the main deposition mechanism for such ultra-small particles. Given the typical scavenging ratios for atmospheric aerosols, this would imply that previous estimates of accretion rate based on dry deposition are likely to be appreciably overestimated. |
author2 |
Lanci, Luca D. V., Kent P. E., Biscaye |
format |
Article in Journal/Newspaper |
author |
LANCI, LUCA D. V. KENT P. E. BISCAYE |
spellingShingle |
LANCI, LUCA D. V. KENT P. E. BISCAYE Meteoric smoke concentration in the Vostok ice core estimated from superparamagnetic relaxation and some consequences for estimates of Earth accretion rate |
author_facet |
LANCI, LUCA D. V. KENT P. E. BISCAYE |
author_sort |
LANCI, LUCA |
title |
Meteoric smoke concentration in the Vostok ice core estimated from superparamagnetic relaxation and some consequences for estimates of Earth accretion rate |
title_short |
Meteoric smoke concentration in the Vostok ice core estimated from superparamagnetic relaxation and some consequences for estimates of Earth accretion rate |
title_full |
Meteoric smoke concentration in the Vostok ice core estimated from superparamagnetic relaxation and some consequences for estimates of Earth accretion rate |
title_fullStr |
Meteoric smoke concentration in the Vostok ice core estimated from superparamagnetic relaxation and some consequences for estimates of Earth accretion rate |
title_full_unstemmed |
Meteoric smoke concentration in the Vostok ice core estimated from superparamagnetic relaxation and some consequences for estimates of Earth accretion rate |
title_sort |
meteoric smoke concentration in the vostok ice core estimated from superparamagnetic relaxation and some consequences for estimates of earth accretion rate |
publishDate |
2007 |
url |
http://hdl.handle.net/11576/1882931 https://doi.org/10.1029/2007GL029811 |
geographic |
Antarctic Greenland |
geographic_facet |
Antarctic Greenland |
genre |
Antarc* Antarctic Antarctica Greenland ice core |
genre_facet |
Antarc* Antarctic Antarctica Greenland ice core |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/000246838300004 volume:34 issue:L10803 firstpage:1 lastpage:4 numberofpages:4 journal:GEOPHYSICAL RESEARCH LETTERS http://hdl.handle.net/11576/1882931 doi:10.1029/2007GL029811 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-34447562923 |
op_doi |
https://doi.org/10.1029/2007GL029811 |
container_title |
Geophysical Research Letters |
container_volume |
34 |
container_issue |
10 |
_version_ |
1796299772567486464 |