Relative levels of natural and anthropogenic lead in recent Antarctic snow
Concentrations of lead have been measured by ultraclean isotope dilution mass spectrometry in large blocks of surface snow collected along a 433-km coast-interior axis in East Antarctica and near the geographic south pole. Slight contamination existed on the outside of the blocks, but concentration...
Published in: | Journal of Geophysical Research |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
American Geophysical Union
1987
|
Subjects: | |
Online Access: | https://authors.library.caltech.edu/49942/ https://authors.library.caltech.edu/49942/1/jgrd766.pdf https://resolver.caltech.edu/CaltechAUTHORS:20140923-113235820 |
id |
ftcaltechauth:oai:authors.library.caltech.edu:49942 |
---|---|
record_format |
openpolar |
spelling |
ftcaltechauth:oai:authors.library.caltech.edu:49942 2023-05-15T13:24:27+02:00 Relative levels of natural and anthropogenic lead in recent Antarctic snow Boutron, Claude F. Patterson, Clair C. 1987-07-20 application/pdf https://authors.library.caltech.edu/49942/ https://authors.library.caltech.edu/49942/1/jgrd766.pdf https://resolver.caltech.edu/CaltechAUTHORS:20140923-113235820 en eng American Geophysical Union https://authors.library.caltech.edu/49942/1/jgrd766.pdf Boutron, Claude F. and Patterson, Clair C. (1987) Relative levels of natural and anthropogenic lead in recent Antarctic snow. Journal of Geophysical Research D, 92 (D7). pp. 8454-8464. ISSN 0148-0227. doi:10.1029/JD092iD07p08454. https://resolver.caltech.edu/CaltechAUTHORS:20140923-113235820 <https://resolver.caltech.edu/CaltechAUTHORS:20140923-113235820> other Article PeerReviewed 1987 ftcaltechauth https://doi.org/10.1029/JD092iD07p08454 2021-11-11T18:59:58Z Concentrations of lead have been measured by ultraclean isotope dilution mass spectrometry in large blocks of surface snow collected along a 433-km coast-interior axis in East Antarctica and near the geographic south pole. Slight contamination existed on the outside of the blocks, but concentration profiles from their exteriors to their interiors indicate that lead concentrations in the innermost parts of the blocks do represent the original concentrations in present-day Antarctic snow. Geographical variations of lead concentrations appear to be mainly due to local emissions from Dumont d'Urville and Amundsen Scott stations. The globally significant lead concentration in present-day Antarctic snow is found to be about 2 pg Pb/g. The corresponding value in Antarctic air is estimated to be about 7 pg Pb/m^3 STP, which is approximately fivefold larger than total natural lead contributed by soil dusts, volcanoes and sea salts. A tentative temporal curve of globally significant lead concentrations in Antarctic ice and snow for the last 13,000 years is given. It shows concentrations of about 0.4 pg Pb/g throughout most of the Holocene, with recent fivefold increases to about 2 pg Pb/g today. The general picture is then that four-fifths of total lead in the Antarctic troposphere today is anthropogenic. Article in Journal/Newspaper Amundsen-Scott Antarc* Antarctic Antarctica East Antarctica South pole South pole Caltech Authors (California Institute of Technology) Amundsen-Scott ENVELOPE(0.000,0.000,-90.000,-90.000) Antarctic Dumont d'Urville ENVELOPE(140.017,140.017,-66.667,-66.667) Dumont-d'Urville ENVELOPE(140.013,140.013,-66.667,-66.667) East Antarctica South Pole The Antarctic Journal of Geophysical Research 92 D7 8454 |
institution |
Open Polar |
collection |
Caltech Authors (California Institute of Technology) |
op_collection_id |
ftcaltechauth |
language |
English |
description |
Concentrations of lead have been measured by ultraclean isotope dilution mass spectrometry in large blocks of surface snow collected along a 433-km coast-interior axis in East Antarctica and near the geographic south pole. Slight contamination existed on the outside of the blocks, but concentration profiles from their exteriors to their interiors indicate that lead concentrations in the innermost parts of the blocks do represent the original concentrations in present-day Antarctic snow. Geographical variations of lead concentrations appear to be mainly due to local emissions from Dumont d'Urville and Amundsen Scott stations. The globally significant lead concentration in present-day Antarctic snow is found to be about 2 pg Pb/g. The corresponding value in Antarctic air is estimated to be about 7 pg Pb/m^3 STP, which is approximately fivefold larger than total natural lead contributed by soil dusts, volcanoes and sea salts. A tentative temporal curve of globally significant lead concentrations in Antarctic ice and snow for the last 13,000 years is given. It shows concentrations of about 0.4 pg Pb/g throughout most of the Holocene, with recent fivefold increases to about 2 pg Pb/g today. The general picture is then that four-fifths of total lead in the Antarctic troposphere today is anthropogenic. |
format |
Article in Journal/Newspaper |
author |
Boutron, Claude F. Patterson, Clair C. |
spellingShingle |
Boutron, Claude F. Patterson, Clair C. Relative levels of natural and anthropogenic lead in recent Antarctic snow |
author_facet |
Boutron, Claude F. Patterson, Clair C. |
author_sort |
Boutron, Claude F. |
title |
Relative levels of natural and anthropogenic lead in recent Antarctic snow |
title_short |
Relative levels of natural and anthropogenic lead in recent Antarctic snow |
title_full |
Relative levels of natural and anthropogenic lead in recent Antarctic snow |
title_fullStr |
Relative levels of natural and anthropogenic lead in recent Antarctic snow |
title_full_unstemmed |
Relative levels of natural and anthropogenic lead in recent Antarctic snow |
title_sort |
relative levels of natural and anthropogenic lead in recent antarctic snow |
publisher |
American Geophysical Union |
publishDate |
1987 |
url |
https://authors.library.caltech.edu/49942/ https://authors.library.caltech.edu/49942/1/jgrd766.pdf https://resolver.caltech.edu/CaltechAUTHORS:20140923-113235820 |
long_lat |
ENVELOPE(0.000,0.000,-90.000,-90.000) ENVELOPE(140.017,140.017,-66.667,-66.667) ENVELOPE(140.013,140.013,-66.667,-66.667) |
geographic |
Amundsen-Scott Antarctic Dumont d'Urville Dumont-d'Urville East Antarctica South Pole The Antarctic |
geographic_facet |
Amundsen-Scott Antarctic Dumont d'Urville Dumont-d'Urville East Antarctica South Pole The Antarctic |
genre |
Amundsen-Scott Antarc* Antarctic Antarctica East Antarctica South pole South pole |
genre_facet |
Amundsen-Scott Antarc* Antarctic Antarctica East Antarctica South pole South pole |
op_relation |
https://authors.library.caltech.edu/49942/1/jgrd766.pdf Boutron, Claude F. and Patterson, Clair C. (1987) Relative levels of natural and anthropogenic lead in recent Antarctic snow. Journal of Geophysical Research D, 92 (D7). pp. 8454-8464. ISSN 0148-0227. doi:10.1029/JD092iD07p08454. https://resolver.caltech.edu/CaltechAUTHORS:20140923-113235820 <https://resolver.caltech.edu/CaltechAUTHORS:20140923-113235820> |
op_rights |
other |
op_doi |
https://doi.org/10.1029/JD092iD07p08454 |
container_title |
Journal of Geophysical Research |
container_volume |
92 |
container_issue |
D7 |
container_start_page |
8454 |
_version_ |
1766379783504003072 |