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: |
Wiley
2020
|
Subjects: | |
Online Access: | https://kar.kent.ac.uk/83853/ https://kar.kent.ac.uk/83853/1/IDP%20Taylor%20et%20al_KAR.pdf https://doi.org/10.1111/maps.13483 |
id |
ftkentuniv:oai:kar.kent.ac.uk:83853 |
---|---|
record_format |
openpolar |
spelling |
ftkentuniv:oai:kar.kent.ac.uk:83853 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 https://kar.kent.ac.uk/83853/ https://kar.kent.ac.uk/83853/1/IDP%20Taylor%20et%20al_KAR.pdf https://doi.org/10.1111/maps.13483 en eng Wiley https://kar.kent.ac.uk/83853/1/IDP%20Taylor%20et%20al_KAR.pdf 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., and others. Messenger, S., and Wozniakiewicz, P.J. (hide) (2020) Sampling interplanetary dust from Antarctic air. Meteoritics & Planetary Science, 55 (5). pp. 1128-1145. ISSN 1086-9379. E-ISSN 1945-5100. (doi:10.1111/maps.13483 <https://doi.org/10.1111/maps.13483>) (KAR id:83853 </83853>) QB Astronomy Article PeerReviewed 2020 ftkentuniv https://doi.org/10.1111/maps.13483 2023-03-12T19:18:12Z 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 University of Kent: KAR - Kent Academic Repository Antarctic South Pole Amundsen-Scott ENVELOPE(0.000,0.000,-90.000,-90.000) Amundsen Scott South Pole Station ENVELOPE(0.000,0.000,-90.000,-90.000) Amundsen-Scott South Pole Station ENVELOPE(139.273,139.273,-89.998,-89.998) Meteoritics & Planetary Science 55 5 1128 1145 |
institution |
Open Polar |
collection |
University of Kent: KAR - Kent Academic Repository |
op_collection_id |
ftkentuniv |
language |
English |
topic |
QB Astronomy |
spellingShingle |
QB Astronomy 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 |
topic_facet |
QB Astronomy |
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 ~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. |
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. |
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 |
https://kar.kent.ac.uk/83853/ https://kar.kent.ac.uk/83853/1/IDP%20Taylor%20et%20al_KAR.pdf https://doi.org/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 |
Antarctic South Pole Amundsen-Scott Amundsen Scott South Pole Station Amundsen-Scott South Pole Station |
geographic_facet |
Antarctic South Pole Amundsen-Scott Amundsen Scott South Pole Station Amundsen-Scott South Pole Station |
genre |
Amundsen-Scott Antarc* Antarctic South pole South pole |
genre_facet |
Amundsen-Scott Antarc* Antarctic South pole South pole |
op_relation |
https://kar.kent.ac.uk/83853/1/IDP%20Taylor%20et%20al_KAR.pdf 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., and others. Messenger, S., and Wozniakiewicz, P.J. (hide) (2020) Sampling interplanetary dust from Antarctic air. Meteoritics & Planetary Science, 55 (5). pp. 1128-1145. ISSN 1086-9379. E-ISSN 1945-5100. (doi:10.1111/maps.13483 <https://doi.org/10.1111/maps.13483>) (KAR id:83853 </83853>) |
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_ |
1766379819792072704 |