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...
Main Authors: | , , |
---|---|
Format: | Text |
Language: | unknown |
Published: |
Columbia University
2007
|
Subjects: | |
Online Access: | https://dx.doi.org/10.7916/d81z4dz1 https://academiccommons.columbia.edu/doi/10.7916/D81Z4DZ1 |
id |
ftdatacite:10.7916/d81z4dz1 |
---|---|
record_format |
openpolar |
spelling |
ftdatacite:10.7916/d81z4dz1 2023-05-15T13:53:02+02:00 Meteoric smoke concentration in the Vostok ice core estimated from superparamagnetic relaxation and some consequences for estimates of Earth accretion rate Lanci, Luca Kent, Dennis V. Biscaye, Pierre E. 2007 https://dx.doi.org/10.7916/d81z4dz1 https://academiccommons.columbia.edu/doi/10.7916/D81Z4DZ1 unknown Columbia University Geophysics Text Articles article-journal ScholarlyArticle 2007 ftdatacite https://doi.org/10.7916/d81z4dz1 2021-11-05T12:55:41Z 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. Text Antarc* Antarctic Antarctica Greenland ice core DataCite Metadata Store (German National Library of Science and Technology) Antarctic Greenland |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Geophysics |
spellingShingle |
Geophysics Lanci, Luca Kent, Dennis V. Biscaye, Pierre E. Meteoric smoke concentration in the Vostok ice core estimated from superparamagnetic relaxation and some consequences for estimates of Earth accretion rate |
topic_facet |
Geophysics |
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. |
format |
Text |
author |
Lanci, Luca Kent, Dennis V. Biscaye, Pierre E. |
author_facet |
Lanci, Luca Kent, Dennis V. Biscaye, Pierre E. |
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 |
publisher |
Columbia University |
publishDate |
2007 |
url |
https://dx.doi.org/10.7916/d81z4dz1 https://academiccommons.columbia.edu/doi/10.7916/D81Z4DZ1 |
geographic |
Antarctic Greenland |
geographic_facet |
Antarctic Greenland |
genre |
Antarc* Antarctic Antarctica Greenland ice core |
genre_facet |
Antarc* Antarctic Antarctica Greenland ice core |
op_doi |
https://doi.org/10.7916/d81z4dz1 |
_version_ |
1766257996151652352 |