Ground-penetrating radar as a tool for determining the interface between temperate and cold ice, and snow depth: a case study for Hurd-Johnsons glaciers, Livingston Island, Antarctica
We analyze the internal structure of two polythermal glaciers, Hurd and Johnsons, located on Livingston Island, Antarctica, using 200 and 750 MHz GPR data collected in 2003/04, 2008/09 and 2016/17 field campaigns. Based on the different permittivities of snow and ice, we determined the thickness dis...
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Cambridge University Press
2023-09-01
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| Series: | Annals of Glaciology |
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| Online Access: | https://www.cambridge.org/core/product/identifier/S0260305523000733/type/journal_article |
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| author | Unai Letamendia Francisco Navarro Beatriz Benjumea |
| author_facet | Unai Letamendia Francisco Navarro Beatriz Benjumea |
| author_sort | Unai Letamendia |
| collection | DOAJ |
| description | We analyze the internal structure of two polythermal glaciers, Hurd and Johnsons, located on Livingston Island, Antarctica, using 200 and 750 MHz GPR data collected in 2003/04, 2008/09 and 2016/17 field campaigns. Based on the different permittivities of snow and ice, we determined the thickness distribution of the end-of winter snow cover and of the cold ice layer. Their knowledge is fundamental for mass balance and glacier dynamics studies due to the different densities and rheological properties of such media. The average measured thicknesses for the snow and cold ice layers (the latter including the snow layer) were of 1.44 ± 0.09 and 29.1 ± 1.5 m, and their corresponding maxima were of 2.45 ± 0.21 and 80.8 ± 2.5 m. GPR snow profiling allowed for extension of the coverage of the snow thickness survey, but added little information to that supplied by snow pits, stake readings and manual snow probing, because of the multiplicity of reflections within the seasonal snowpack caused by internal ice layers and lenses. The polythermal structure determined for Hurd Glacier fits into the so-called Scandinavian type, seldom reported for the Antarctic region. |
| format | Article |
| id | doaj-art-a478df258d5c4ecf99705b4c400f98a1 |
| institution | Kabale University |
| issn | 0260-3055 1727-5644 |
| language | English |
| publishDate | 2023-09-01 |
| publisher | Cambridge University Press |
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| series | Annals of Glaciology |
| spelling | doaj-art-a478df258d5c4ecf99705b4c400f98a12024-11-27T11:13:48ZengCambridge University PressAnnals of Glaciology0260-30551727-56442023-09-016434335110.1017/aog.2023.73Ground-penetrating radar as a tool for determining the interface between temperate and cold ice, and snow depth: a case study for Hurd-Johnsons glaciers, Livingston Island, AntarcticaUnai Letamendia0https://orcid.org/0000-0002-7659-0006Francisco Navarro1https://orcid.org/0000-0002-5147-0067Beatriz Benjumea2https://orcid.org/0000-0002-0673-3411Departamento de Matemática Aplicada a las TIC, ETSI de Telecomunicación, Universidad Politécnica de Madrid, Madrid, SpainDepartamento de Matemática Aplicada a las TIC, ETSI de Telecomunicación, Universidad Politécnica de Madrid, Madrid, SpainInstituto Gelógico y Minero de España, CSIC, Madrid, SpainWe analyze the internal structure of two polythermal glaciers, Hurd and Johnsons, located on Livingston Island, Antarctica, using 200 and 750 MHz GPR data collected in 2003/04, 2008/09 and 2016/17 field campaigns. Based on the different permittivities of snow and ice, we determined the thickness distribution of the end-of winter snow cover and of the cold ice layer. Their knowledge is fundamental for mass balance and glacier dynamics studies due to the different densities and rheological properties of such media. The average measured thicknesses for the snow and cold ice layers (the latter including the snow layer) were of 1.44 ± 0.09 and 29.1 ± 1.5 m, and their corresponding maxima were of 2.45 ± 0.21 and 80.8 ± 2.5 m. GPR snow profiling allowed for extension of the coverage of the snow thickness survey, but added little information to that supplied by snow pits, stake readings and manual snow probing, because of the multiplicity of reflections within the seasonal snowpack caused by internal ice layers and lenses. The polythermal structure determined for Hurd Glacier fits into the so-called Scandinavian type, seldom reported for the Antarctic region.https://www.cambridge.org/core/product/identifier/S0260305523000733/type/journal_articleGround-penetrating radarice thickness measurementssnow |
| spellingShingle | Unai Letamendia Francisco Navarro Beatriz Benjumea Ground-penetrating radar as a tool for determining the interface between temperate and cold ice, and snow depth: a case study for Hurd-Johnsons glaciers, Livingston Island, Antarctica Annals of Glaciology Ground-penetrating radar ice thickness measurements snow |
| title | Ground-penetrating radar as a tool for determining the interface between temperate and cold ice, and snow depth: a case study for Hurd-Johnsons glaciers, Livingston Island, Antarctica |
| title_full | Ground-penetrating radar as a tool for determining the interface between temperate and cold ice, and snow depth: a case study for Hurd-Johnsons glaciers, Livingston Island, Antarctica |
| title_fullStr | Ground-penetrating radar as a tool for determining the interface between temperate and cold ice, and snow depth: a case study for Hurd-Johnsons glaciers, Livingston Island, Antarctica |
| title_full_unstemmed | Ground-penetrating radar as a tool for determining the interface between temperate and cold ice, and snow depth: a case study for Hurd-Johnsons glaciers, Livingston Island, Antarctica |
| title_short | Ground-penetrating radar as a tool for determining the interface between temperate and cold ice, and snow depth: a case study for Hurd-Johnsons glaciers, Livingston Island, Antarctica |
| title_sort | ground penetrating radar as a tool for determining the interface between temperate and cold ice and snow depth a case study for hurd johnsons glaciers livingston island antarctica |
| topic | Ground-penetrating radar ice thickness measurements snow |
| url | https://www.cambridge.org/core/product/identifier/S0260305523000733/type/journal_article |
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