A framework for attenuation method selection evaluated with ice-penetrating radar data at South Pole Lake
All radar power interpretations require a correction for attenuative losses. Moreover, radar attenuation is a proxy for ice-column properties, such as temperature and chemistry. Prior studies use either paired thermodynamic and conductivity models or the radar data themselves to calculate attenuatio...
Published in: | Annals of Glaciology |
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Cambridge University Press
2020
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ftdoajarticles:oai:doaj.org/article:1cd451bd11024d56b02fce9fece33ef9 2023-05-15T13:29:32+02:00 A framework for attenuation method selection evaluated with ice-penetrating radar data at South Pole Lake Benjamin H. Hills Knut Christianson Nicholas Holschuh 2020-04-01T00:00:00Z https://doi.org/10.1017/aog.2020.32 https://doaj.org/article/1cd451bd11024d56b02fce9fece33ef9 EN eng Cambridge University Press https://www.cambridge.org/core/product/identifier/S0260305520000324/type/journal_article https://doaj.org/toc/0260-3055 https://doaj.org/toc/1727-5644 doi:10.1017/aog.2020.32 0260-3055 1727-5644 https://doaj.org/article/1cd451bd11024d56b02fce9fece33ef9 Annals of Glaciology, Vol 61, Pp 176-187 (2020) Antarctic glaciology glacier geophysics ice temperature radio-echo sounding subglacial lakes Meteorology. Climatology QC851-999 article 2020 ftdoajarticles https://doi.org/10.1017/aog.2020.32 2023-03-12T01:31:55Z All radar power interpretations require a correction for attenuative losses. Moreover, radar attenuation is a proxy for ice-column properties, such as temperature and chemistry. Prior studies use either paired thermodynamic and conductivity models or the radar data themselves to calculate attenuation, but there is no standard method to do so; and, before now, there has been no robust methodological comparison. Here, we develop a framework meant to guide the implementation of empirical attenuation methods based on survey design and regional glaciological conditions. We divide the methods into the three main groups: (1) those that infer attenuation from a single reflector across many traces; (2) those that infer attenuation from multiple reflectors within one trace; and (3) those that infer attenuation by contrasting the measured power from primary and secondary reflections. To assess our framework, we introduce a new ground-based radar survey from South Pole Lake, comparing selected empirical methods to the expected attenuation from a temperature- and chemistry-dependent Arrhenius model. Based on the small surveyed area, lack of a sufficient calibration surface and low reflector relief, the attenuation methods that use multiple reflectors are most suitable at South Pole Lake. Article in Journal/Newspaper Annals of Glaciology Antarc* Antarctic South pole South pole Directory of Open Access Journals: DOAJ Articles Antarctic South Pole New Ground ENVELOPE(-55.215,-55.215,49.567,49.567) Pole Lake ENVELOPE(-100.645,-100.645,56.802,56.802) Annals of Glaciology 61 81 176 187 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Antarctic glaciology glacier geophysics ice temperature radio-echo sounding subglacial lakes Meteorology. Climatology QC851-999 |
spellingShingle |
Antarctic glaciology glacier geophysics ice temperature radio-echo sounding subglacial lakes Meteorology. Climatology QC851-999 Benjamin H. Hills Knut Christianson Nicholas Holschuh A framework for attenuation method selection evaluated with ice-penetrating radar data at South Pole Lake |
topic_facet |
Antarctic glaciology glacier geophysics ice temperature radio-echo sounding subglacial lakes Meteorology. Climatology QC851-999 |
description |
All radar power interpretations require a correction for attenuative losses. Moreover, radar attenuation is a proxy for ice-column properties, such as temperature and chemistry. Prior studies use either paired thermodynamic and conductivity models or the radar data themselves to calculate attenuation, but there is no standard method to do so; and, before now, there has been no robust methodological comparison. Here, we develop a framework meant to guide the implementation of empirical attenuation methods based on survey design and regional glaciological conditions. We divide the methods into the three main groups: (1) those that infer attenuation from a single reflector across many traces; (2) those that infer attenuation from multiple reflectors within one trace; and (3) those that infer attenuation by contrasting the measured power from primary and secondary reflections. To assess our framework, we introduce a new ground-based radar survey from South Pole Lake, comparing selected empirical methods to the expected attenuation from a temperature- and chemistry-dependent Arrhenius model. Based on the small surveyed area, lack of a sufficient calibration surface and low reflector relief, the attenuation methods that use multiple reflectors are most suitable at South Pole Lake. |
format |
Article in Journal/Newspaper |
author |
Benjamin H. Hills Knut Christianson Nicholas Holschuh |
author_facet |
Benjamin H. Hills Knut Christianson Nicholas Holschuh |
author_sort |
Benjamin H. Hills |
title |
A framework for attenuation method selection evaluated with ice-penetrating radar data at South Pole Lake |
title_short |
A framework for attenuation method selection evaluated with ice-penetrating radar data at South Pole Lake |
title_full |
A framework for attenuation method selection evaluated with ice-penetrating radar data at South Pole Lake |
title_fullStr |
A framework for attenuation method selection evaluated with ice-penetrating radar data at South Pole Lake |
title_full_unstemmed |
A framework for attenuation method selection evaluated with ice-penetrating radar data at South Pole Lake |
title_sort |
framework for attenuation method selection evaluated with ice-penetrating radar data at south pole lake |
publisher |
Cambridge University Press |
publishDate |
2020 |
url |
https://doi.org/10.1017/aog.2020.32 https://doaj.org/article/1cd451bd11024d56b02fce9fece33ef9 |
long_lat |
ENVELOPE(-55.215,-55.215,49.567,49.567) ENVELOPE(-100.645,-100.645,56.802,56.802) |
geographic |
Antarctic South Pole New Ground Pole Lake |
geographic_facet |
Antarctic South Pole New Ground Pole Lake |
genre |
Annals of Glaciology Antarc* Antarctic South pole South pole |
genre_facet |
Annals of Glaciology Antarc* Antarctic South pole South pole |
op_source |
Annals of Glaciology, Vol 61, Pp 176-187 (2020) |
op_relation |
https://www.cambridge.org/core/product/identifier/S0260305520000324/type/journal_article https://doaj.org/toc/0260-3055 https://doaj.org/toc/1727-5644 doi:10.1017/aog.2020.32 0260-3055 1727-5644 https://doaj.org/article/1cd451bd11024d56b02fce9fece33ef9 |
op_doi |
https://doi.org/10.1017/aog.2020.32 |
container_title |
Annals of Glaciology |
container_volume |
61 |
container_issue |
81 |
container_start_page |
176 |
op_container_end_page |
187 |
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1766001097022898176 |