Sampling interplanetary dust from Antarctic air
Abstract We built a collector to filter interplanetary dust particles (IDPs) larger than 5 μm from the clean air at the Amundsen Scott South Pole station. Our sampling strategy used long duration, continuous dry filtering of near‐surface air in place of short duration, high‐speed impact collection o...
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Online Access: | http://dx.doi.org/10.1111/maps.13483 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fmaps.13483 https://onlinelibrary.wiley.com/doi/pdf/10.1111/maps.13483 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/maps.13483 https://onlinelibrary.wiley.com/doi/am-pdf/10.1111/maps.13483 |
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crwiley:10.1111/maps.13483 2024-10-06T13:42:06+00:00 Sampling interplanetary dust from Antarctic air Taylor, S. Lever, J. H. Burgess, K. D. Stroud, R. M. Brownlee, D. E. Nittler, L. R. Bardyn, A. Alexander, C. M. O’D. Farley, K. A. Treffkorn, J. Messenger, S. Wozniakiewicz, P. J. National Aeronautics and Space Administration National Science Foundation 2020 http://dx.doi.org/10.1111/maps.13483 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fmaps.13483 https://onlinelibrary.wiley.com/doi/pdf/10.1111/maps.13483 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/maps.13483 https://onlinelibrary.wiley.com/doi/am-pdf/10.1111/maps.13483 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#am http://onlinelibrary.wiley.com/termsAndConditions#vor Meteoritics & Planetary Science volume 55, issue 5, page 1128-1145 ISSN 1086-9379 1945-5100 journal-article 2020 crwiley https://doi.org/10.1111/maps.13483 2024-09-19T04:20:03Z Abstract We built a collector to filter interplanetary dust particles (IDPs) larger than 5 μm from the clean air at the Amundsen Scott South Pole station. Our sampling strategy used long duration, continuous dry filtering of near‐surface air in place of short duration, high‐speed impact collection on flags flown in the stratosphere. We filtered ~10 7 m 3 of clean Antarctic air through 20 cm diameter, 3 µm filters coupled to a suction blower of modest power consumption (5–6 kW). Our collector ran continuously for 2 years and yielded 41 filters for analyses. Based on stratospheric concentrations, we predicted that each month’s collection would provide 300–900 IDPs for analysis. We identified 19 extraterrestrial (ET) particles on the 66 cm 2 of filter examined, which represented ~0.5% of the exposed filter surfaces. The 11 ET particles larger than 5 µm yield about a fifth of the expected flux based on >5 µm stratospheric ET particle flux. Of the 19 ET particles identified, four were chondritic porous IDPs, seven were FeNiS beads, two were FeNi grains, and six were chondritic material with FeNiS components. Most were <10 µm in diameter and none were cluster particles. Additionally, a carbon‐rich candidate particle was found to have a small 15 N isotopic enrichment, supporting an ET origin. Many other candidate grains, including chondritic glasses and C‐rich particles with Mg and Si and FeS grains, require further analysis to determine if they are ET. The vast majority of exposed filter surfaces remain to be examined. Article in Journal/Newspaper Amundsen-Scott Antarc* Antarctic South pole South pole Wiley Online Library Amundsen Scott South Pole Station ENVELOPE(0.000,0.000,-90.000,-90.000) Amundsen-Scott ENVELOPE(0.000,0.000,-90.000,-90.000) Amundsen-Scott South Pole Station ENVELOPE(139.273,139.273,-89.998,-89.998) Antarctic South Pole Meteoritics & Planetary Science 55 5 1128 1145 |
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Open Polar |
collection |
Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract We built a collector to filter interplanetary dust particles (IDPs) larger than 5 μm from the clean air at the Amundsen Scott South Pole station. Our sampling strategy used long duration, continuous dry filtering of near‐surface air in place of short duration, high‐speed impact collection on flags flown in the stratosphere. We filtered ~10 7 m 3 of clean Antarctic air through 20 cm diameter, 3 µm filters coupled to a suction blower of modest power consumption (5–6 kW). Our collector ran continuously for 2 years and yielded 41 filters for analyses. Based on stratospheric concentrations, we predicted that each month’s collection would provide 300–900 IDPs for analysis. We identified 19 extraterrestrial (ET) particles on the 66 cm 2 of filter examined, which represented ~0.5% of the exposed filter surfaces. The 11 ET particles larger than 5 µm yield about a fifth of the expected flux based on >5 µm stratospheric ET particle flux. Of the 19 ET particles identified, four were chondritic porous IDPs, seven were FeNiS beads, two were FeNi grains, and six were chondritic material with FeNiS components. Most were <10 µm in diameter and none were cluster particles. Additionally, a carbon‐rich candidate particle was found to have a small 15 N isotopic enrichment, supporting an ET origin. Many other candidate grains, including chondritic glasses and C‐rich particles with Mg and Si and FeS grains, require further analysis to determine if they are ET. The vast majority of exposed filter surfaces remain to be examined. |
author2 |
National Aeronautics and Space Administration National Science Foundation |
format |
Article in Journal/Newspaper |
author |
Taylor, S. Lever, J. H. Burgess, K. D. Stroud, R. M. Brownlee, D. E. Nittler, L. R. Bardyn, A. Alexander, C. M. O’D. Farley, K. A. Treffkorn, J. Messenger, S. Wozniakiewicz, P. J. |
spellingShingle |
Taylor, S. Lever, J. H. Burgess, K. D. Stroud, R. M. Brownlee, D. E. Nittler, L. R. Bardyn, A. Alexander, C. M. O’D. Farley, K. A. Treffkorn, J. Messenger, S. Wozniakiewicz, P. J. Sampling interplanetary dust from Antarctic air |
author_facet |
Taylor, S. Lever, J. H. Burgess, K. D. Stroud, R. M. Brownlee, D. E. Nittler, L. R. Bardyn, A. Alexander, C. M. O’D. Farley, K. A. Treffkorn, J. Messenger, S. Wozniakiewicz, P. J. |
author_sort |
Taylor, S. |
title |
Sampling interplanetary dust from Antarctic air |
title_short |
Sampling interplanetary dust from Antarctic air |
title_full |
Sampling interplanetary dust from Antarctic air |
title_fullStr |
Sampling interplanetary dust from Antarctic air |
title_full_unstemmed |
Sampling interplanetary dust from Antarctic air |
title_sort |
sampling interplanetary dust from antarctic air |
publisher |
Wiley |
publishDate |
2020 |
url |
http://dx.doi.org/10.1111/maps.13483 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fmaps.13483 https://onlinelibrary.wiley.com/doi/pdf/10.1111/maps.13483 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/maps.13483 https://onlinelibrary.wiley.com/doi/am-pdf/10.1111/maps.13483 |
long_lat |
ENVELOPE(0.000,0.000,-90.000,-90.000) ENVELOPE(0.000,0.000,-90.000,-90.000) ENVELOPE(139.273,139.273,-89.998,-89.998) |
geographic |
Amundsen Scott South Pole Station Amundsen-Scott Amundsen-Scott South Pole Station Antarctic South Pole |
geographic_facet |
Amundsen Scott South Pole Station Amundsen-Scott Amundsen-Scott South Pole Station Antarctic South Pole |
genre |
Amundsen-Scott Antarc* Antarctic South pole South pole |
genre_facet |
Amundsen-Scott Antarc* Antarctic South pole South pole |
op_source |
Meteoritics & Planetary Science volume 55, issue 5, page 1128-1145 ISSN 1086-9379 1945-5100 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#am http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/maps.13483 |
container_title |
Meteoritics & Planetary Science |
container_volume |
55 |
container_issue |
5 |
container_start_page |
1128 |
op_container_end_page |
1145 |
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1812173580273713152 |