Sampling interplanetary dust from Antarctic air
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 f...
Published in: | Meteoritics & Planetary Science |
---|---|
Main Authors: | , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Meteoritical Society
2020
|
Subjects: | |
Online Access: | https://authors.library.caltech.edu/103496/ https://authors.library.caltech.edu/103496/9/maps.13483.pdf https://authors.library.caltech.edu/103496/13/maps13483-sup-0001-appendixs1.docx https://authors.library.caltech.edu/103496/14/maps13483-sup-0002-appendixs2.pdf https://authors.library.caltech.edu/103496/15/maps13483-sup-0003-appendixs3-a.pdf https://authors.library.caltech.edu/103496/16/maps13483-sup-0004-appendixs4.pdf https://resolver.caltech.edu/CaltechAUTHORS:20200527-131917889 |
id |
ftcaltechauth:oai:authors.library.caltech.edu:103496 |
---|---|
record_format |
openpolar |
spelling |
ftcaltechauth:oai:authors.library.caltech.edu:103496 2023-05-15T13:24:28+02:00 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. 2020-05 application/pdf application/msword https://authors.library.caltech.edu/103496/ https://authors.library.caltech.edu/103496/9/maps.13483.pdf https://authors.library.caltech.edu/103496/13/maps13483-sup-0001-appendixs1.docx https://authors.library.caltech.edu/103496/14/maps13483-sup-0002-appendixs2.pdf https://authors.library.caltech.edu/103496/15/maps13483-sup-0003-appendixs3-a.pdf https://authors.library.caltech.edu/103496/16/maps13483-sup-0004-appendixs4.pdf https://resolver.caltech.edu/CaltechAUTHORS:20200527-131917889 en eng Meteoritical Society https://authors.library.caltech.edu/103496/9/maps.13483.pdf https://authors.library.caltech.edu/103496/13/maps13483-sup-0001-appendixs1.docx https://authors.library.caltech.edu/103496/14/maps13483-sup-0002-appendixs2.pdf https://authors.library.caltech.edu/103496/15/maps13483-sup-0003-appendixs3-a.pdf https://authors.library.caltech.edu/103496/16/maps13483-sup-0004-appendixs4.pdf Taylor, S. and Lever, J. H. and Burgess, K. D. and Stroud, R. M. and Brownlee, D. E. and Nittler, L. R. and Bardyn, A. and Alexander, C. M. O'D. and Farley, K. A. and Treffkorn, J. and Messenger, S. and Wozniakiewicz, P. J. (2020) Sampling interplanetary dust from Antarctic air. Meteoritics and Planetary Science, 55 (5). pp. 1128-1145. ISSN 1086-9379. doi:10.1111/maps.13483. https://resolver.caltech.edu/CaltechAUTHORS:20200527-131917889 <https://resolver.caltech.edu/CaltechAUTHORS:20200527-131917889> other Article PeerReviewed 2020 ftcaltechauth https://doi.org/10.1111/maps.13483 2021-11-18T18:56:55Z 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 ~10⁷ m³ 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 cm² 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 ¹⁵N 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 Caltech Authors (California Institute of Technology) 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 |
institution |
Open Polar |
collection |
Caltech Authors (California Institute of Technology) |
op_collection_id |
ftcaltechauth |
language |
English |
description |
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 ~10⁷ m³ 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 cm² 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 ¹⁵N 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. |
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 |
Meteoritical Society |
publishDate |
2020 |
url |
https://authors.library.caltech.edu/103496/ https://authors.library.caltech.edu/103496/9/maps.13483.pdf https://authors.library.caltech.edu/103496/13/maps13483-sup-0001-appendixs1.docx https://authors.library.caltech.edu/103496/14/maps13483-sup-0002-appendixs2.pdf https://authors.library.caltech.edu/103496/15/maps13483-sup-0003-appendixs3-a.pdf https://authors.library.caltech.edu/103496/16/maps13483-sup-0004-appendixs4.pdf https://resolver.caltech.edu/CaltechAUTHORS:20200527-131917889 |
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_relation |
https://authors.library.caltech.edu/103496/9/maps.13483.pdf https://authors.library.caltech.edu/103496/13/maps13483-sup-0001-appendixs1.docx https://authors.library.caltech.edu/103496/14/maps13483-sup-0002-appendixs2.pdf https://authors.library.caltech.edu/103496/15/maps13483-sup-0003-appendixs3-a.pdf https://authors.library.caltech.edu/103496/16/maps13483-sup-0004-appendixs4.pdf Taylor, S. and Lever, J. H. and Burgess, K. D. and Stroud, R. M. and Brownlee, D. E. and Nittler, L. R. and Bardyn, A. and Alexander, C. M. O'D. and Farley, K. A. and Treffkorn, J. and Messenger, S. and Wozniakiewicz, P. J. (2020) Sampling interplanetary dust from Antarctic air. Meteoritics and Planetary Science, 55 (5). pp. 1128-1145. ISSN 1086-9379. doi:10.1111/maps.13483. https://resolver.caltech.edu/CaltechAUTHORS:20200527-131917889 <https://resolver.caltech.edu/CaltechAUTHORS:20200527-131917889> |
op_rights |
other |
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 |
_version_ |
1766379813571919872 |