O(1S) Effective Lifetimes
Metadata record for data from ASAC Project 43 See the link below for public details on this project. From the abstract of the referenced paper: Intensity time-series with a 0.05 s time resolution were obtained for the 428 nm N2+ (1NG) band and 558 nm O(1S) line emissions during intervals of rapidly...
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Australian Antarctic Data Centre
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Online Access: | https://researchdata.ands.org.au/o1s-effective-lifetimes/700213 https://data.aad.gov.au/metadata/records/ASAC_43 http://nla.gov.au/nla.party-617536 |
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ftands:oai:ands.org.au::700213 2023-05-15T13:46:58+02:00 O(1S) Effective Lifetimes BURNS, GARY B. (hasPrincipalInvestigator) BURNS, GARY B. (processor) KLEKOCIUK, ANDREW R. (hasPrincipalInvestigator) KLEKOCIUK, ANDREW R. (processor) Australian Antarctic Data Centre (publisher) Spatial: northlimit=-67.602; southlimit=-67.602; westlimit=62.873; eastLimit=62.873; projection=WGS84 Spatial: northlimit=-54.619; southlimit=-54.619; westlimit=158.86; eastLimit=158.86; projection=WGS84 Temporal: From 1992-09-01 to 1994-03-31 https://researchdata.ands.org.au/o1s-effective-lifetimes/700213 https://data.aad.gov.au/metadata/records/ASAC_43 http://nla.gov.au/nla.party-617536 unknown Australian Antarctic Data Centre https://researchdata.ands.org.au/o1s-effective-lifetimes/700213 474ca011-b995-497f-92ad-aa1a89df18d9 ASAC_43 https://data.aad.gov.au/metadata/records/ASAC_43 http://nla.gov.au/nla.party-617536 Australian Antarctic Data Centre geoscientificInformation ENERGY DEPOSITION EARTH SCIENCE SUN-EARTH INTERACTIONS SOLAR ENERGETIC PARTICLE PROPERTIES ANARE Research Notes impulse function pulse excitation Photometers GROUND STATIONS OCEAN > SOUTHERN OCEAN SOUTHERN OCEAN > MACQUARIE ISLAND CONTINENT > ANTARCTICA GEOGRAPHIC REGION > POLAR VERTICAL LOCATION > IONOSPHERE MESOSPHERE dataset ftands 2020-01-05T21:17:19Z Metadata record for data from ASAC Project 43 See the link below for public details on this project. From the abstract of the referenced paper: Intensity time-series with a 0.05 s time resolution were obtained for the 428 nm N2+ (1NG) band and 558 nm O(1S) line emissions during intervals of rapidly fluctuating auroral intensities at Macquarie Island during 1988. Similar measurements have been used by previous workers to infer the effective lifetimes of the O(1S) state and the existence of, and percentage contribution from, an indirect excitation process. Using 'constructed data' and an impulse function analysis technique, we introduce a method of analysis that shows that variations in the energy of the precipitating auroral electrons during the intensity fluctuations may be misinterpreted as an indirect excitation process of low percentage contribution. Subsequent to our analysis of the data presented here, we became aware of 'pulse pile-up' contaminations of our raw data files. We have not corrected for this in the examples presented. However, our analysis shows that noise on the intensity time-series by itself, or in combination with the energy fluctuations, may result in a significant over-estimation of the contribution of an indirect excitation process. Measurement of the O(1S) effective lifetime is accurate to within 0.05 s. The method we introduce allows determination of an upper limit for the misinterpretation as an indirect process of non-linearites known to exist between the 428 nm N2+ (1NG) band and and 558 nm O(1S) line emissions. These non-linearites have been ignored in previous investigations of O(1S) excitation processes. Dataset Antarc* Antarctica Macquarie Island Southern Ocean Research Data Australia (Australian National Data Service - ANDS) Southern Ocean ENVELOPE(62.873,62.873,-67.602,-67.602) ENVELOPE(158.86,158.86,-54.619,-54.619) |
institution |
Open Polar |
collection |
Research Data Australia (Australian National Data Service - ANDS) |
op_collection_id |
ftands |
language |
unknown |
topic |
geoscientificInformation ENERGY DEPOSITION EARTH SCIENCE SUN-EARTH INTERACTIONS SOLAR ENERGETIC PARTICLE PROPERTIES ANARE Research Notes impulse function pulse excitation Photometers GROUND STATIONS OCEAN > SOUTHERN OCEAN SOUTHERN OCEAN > MACQUARIE ISLAND CONTINENT > ANTARCTICA GEOGRAPHIC REGION > POLAR VERTICAL LOCATION > IONOSPHERE MESOSPHERE |
spellingShingle |
geoscientificInformation ENERGY DEPOSITION EARTH SCIENCE SUN-EARTH INTERACTIONS SOLAR ENERGETIC PARTICLE PROPERTIES ANARE Research Notes impulse function pulse excitation Photometers GROUND STATIONS OCEAN > SOUTHERN OCEAN SOUTHERN OCEAN > MACQUARIE ISLAND CONTINENT > ANTARCTICA GEOGRAPHIC REGION > POLAR VERTICAL LOCATION > IONOSPHERE MESOSPHERE O(1S) Effective Lifetimes |
topic_facet |
geoscientificInformation ENERGY DEPOSITION EARTH SCIENCE SUN-EARTH INTERACTIONS SOLAR ENERGETIC PARTICLE PROPERTIES ANARE Research Notes impulse function pulse excitation Photometers GROUND STATIONS OCEAN > SOUTHERN OCEAN SOUTHERN OCEAN > MACQUARIE ISLAND CONTINENT > ANTARCTICA GEOGRAPHIC REGION > POLAR VERTICAL LOCATION > IONOSPHERE MESOSPHERE |
description |
Metadata record for data from ASAC Project 43 See the link below for public details on this project. From the abstract of the referenced paper: Intensity time-series with a 0.05 s time resolution were obtained for the 428 nm N2+ (1NG) band and 558 nm O(1S) line emissions during intervals of rapidly fluctuating auroral intensities at Macquarie Island during 1988. Similar measurements have been used by previous workers to infer the effective lifetimes of the O(1S) state and the existence of, and percentage contribution from, an indirect excitation process. Using 'constructed data' and an impulse function analysis technique, we introduce a method of analysis that shows that variations in the energy of the precipitating auroral electrons during the intensity fluctuations may be misinterpreted as an indirect excitation process of low percentage contribution. Subsequent to our analysis of the data presented here, we became aware of 'pulse pile-up' contaminations of our raw data files. We have not corrected for this in the examples presented. However, our analysis shows that noise on the intensity time-series by itself, or in combination with the energy fluctuations, may result in a significant over-estimation of the contribution of an indirect excitation process. Measurement of the O(1S) effective lifetime is accurate to within 0.05 s. The method we introduce allows determination of an upper limit for the misinterpretation as an indirect process of non-linearites known to exist between the 428 nm N2+ (1NG) band and and 558 nm O(1S) line emissions. These non-linearites have been ignored in previous investigations of O(1S) excitation processes. |
author2 |
BURNS, GARY B. (hasPrincipalInvestigator) BURNS, GARY B. (processor) KLEKOCIUK, ANDREW R. (hasPrincipalInvestigator) KLEKOCIUK, ANDREW R. (processor) Australian Antarctic Data Centre (publisher) |
format |
Dataset |
title |
O(1S) Effective Lifetimes |
title_short |
O(1S) Effective Lifetimes |
title_full |
O(1S) Effective Lifetimes |
title_fullStr |
O(1S) Effective Lifetimes |
title_full_unstemmed |
O(1S) Effective Lifetimes |
title_sort |
o(1s) effective lifetimes |
publisher |
Australian Antarctic Data Centre |
url |
https://researchdata.ands.org.au/o1s-effective-lifetimes/700213 https://data.aad.gov.au/metadata/records/ASAC_43 http://nla.gov.au/nla.party-617536 |
op_coverage |
Spatial: northlimit=-67.602; southlimit=-67.602; westlimit=62.873; eastLimit=62.873; projection=WGS84 Spatial: northlimit=-54.619; southlimit=-54.619; westlimit=158.86; eastLimit=158.86; projection=WGS84 Temporal: From 1992-09-01 to 1994-03-31 |
long_lat |
ENVELOPE(62.873,62.873,-67.602,-67.602) ENVELOPE(158.86,158.86,-54.619,-54.619) |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Antarc* Antarctica Macquarie Island Southern Ocean |
genre_facet |
Antarc* Antarctica Macquarie Island Southern Ocean |
op_source |
Australian Antarctic Data Centre |
op_relation |
https://researchdata.ands.org.au/o1s-effective-lifetimes/700213 474ca011-b995-497f-92ad-aa1a89df18d9 ASAC_43 https://data.aad.gov.au/metadata/records/ASAC_43 http://nla.gov.au/nla.party-617536 |
_version_ |
1766245900523405312 |