Shallow hot-point drill system for active layer temperature measurement along Zhongshan–Dome A traverse, Antarctica
In glaciology, snow–firn temperature at 10 m is considered a representation of the mean annual air temperature at the surface (MAAT) of the studied site. Although MAAT is an important parameter in ice-sheet investigations, it has not been widely measured in Antarctica. To measure the 10 m snow–firn...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Cambridge University Press
2021-04-01
|
| Series: | Annals of Glaciology |
| Subjects: | |
| Online Access: | https://www.cambridge.org/core/product/identifier/S0260305520000877/type/journal_article |
| _version_ | 1811157269355692032 |
|---|---|
| author | Yazhou Li Xiaopeng Fan Pavel G. Talalay Yinke Dou Siyu Lu Shichang Kang Xiao Li Jialin Hong |
| author_facet | Yazhou Li Xiaopeng Fan Pavel G. Talalay Yinke Dou Siyu Lu Shichang Kang Xiao Li Jialin Hong |
| author_sort | Yazhou Li |
| collection | DOAJ |
| description | In glaciology, snow–firn temperature at 10 m is considered a representation of the mean annual air temperature at the surface (MAAT) of the studied site. Although MAAT is an important parameter in ice-sheet investigations, it has not been widely measured in Antarctica. To measure the 10 m snow–firn temperature in Antarctica, a shallow hot-point drill system is designed. In this simple and lightweight system, a hot-point drill can melt boreholes with a diameter of 34 mm in the snow–firn to a depth of 30 m and a temperature sensors string can measure the borehole temperature precisely. In the 2018/19 field season, 16 boreholes along the Zhongshan–Dome A traverse were drilled, and the borehole temperature was measured. Although certain problems existed pertaining to the hot-point drill, a total depth of ~244 m was successfully drilled at an average penetration rate of ~10 m h−1. After borehole drilling, ~12–15 h were generally required for the borehole to achieve thermal equilibrium with the surroundings. Preliminary results demonstrated that the 10 m snow–firn temperature along the traverse route was affected by the increasing altitude and latitude, and it decreased gradually with an increase in the distance from Zhongshan station. |
| first_indexed | 2024-04-10T05:03:18Z |
| format | Article |
| id | doaj.art-1a90bae719c848fcaa463bc8892fa724 |
| institution | Directory Open Access Journal |
| issn | 0260-3055 1727-5644 |
| language | English |
| last_indexed | 2024-04-10T05:03:18Z |
| publishDate | 2021-04-01 |
| publisher | Cambridge University Press |
| record_format | Article |
| series | Annals of Glaciology |
| spelling | doaj.art-1a90bae719c848fcaa463bc8892fa7242023-03-09T12:27:43ZengCambridge University PressAnnals of Glaciology0260-30551727-56442021-04-016215716510.1017/aog.2020.87Shallow hot-point drill system for active layer temperature measurement along Zhongshan–Dome A traverse, AntarcticaYazhou Li0Xiaopeng Fan1Pavel G. Talalay2https://orcid.org/0000-0002-8230-4600Yinke Dou3Siyu Lu4Shichang Kang5Xiao Li6Jialin Hong7Polar Research Center, Jilin University, Changchun, Jilin 130021, ChinaPolar Research Center, Jilin University, Changchun, Jilin 130021, China State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, ChinaPolar Research Center, Jilin University, Changchun, Jilin 130021, ChinaCollege of Electrical and Power Engineering, Taiyuan University of Technology, Taiyuan 030024, ChinaPolar Research Center, Jilin University, Changchun, Jilin 130021, ChinaState Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, ChinaPolar Research Center, Jilin University, Changchun, Jilin 130021, ChinaPolar Research Center, Jilin University, Changchun, Jilin 130021, ChinaIn glaciology, snow–firn temperature at 10 m is considered a representation of the mean annual air temperature at the surface (MAAT) of the studied site. Although MAAT is an important parameter in ice-sheet investigations, it has not been widely measured in Antarctica. To measure the 10 m snow–firn temperature in Antarctica, a shallow hot-point drill system is designed. In this simple and lightweight system, a hot-point drill can melt boreholes with a diameter of 34 mm in the snow–firn to a depth of 30 m and a temperature sensors string can measure the borehole temperature precisely. In the 2018/19 field season, 16 boreholes along the Zhongshan–Dome A traverse were drilled, and the borehole temperature was measured. Although certain problems existed pertaining to the hot-point drill, a total depth of ~244 m was successfully drilled at an average penetration rate of ~10 m h−1. After borehole drilling, ~12–15 h were generally required for the borehole to achieve thermal equilibrium with the surroundings. Preliminary results demonstrated that the 10 m snow–firn temperature along the traverse route was affected by the increasing altitude and latitude, and it decreased gradually with an increase in the distance from Zhongshan station.https://www.cambridge.org/core/product/identifier/S0260305520000877/type/journal_articleHot-point drillice drillingpenetration ratesnow–firn temperaturethermal equilibrium |
| spellingShingle | Yazhou Li Xiaopeng Fan Pavel G. Talalay Yinke Dou Siyu Lu Shichang Kang Xiao Li Jialin Hong Shallow hot-point drill system for active layer temperature measurement along Zhongshan–Dome A traverse, Antarctica Annals of Glaciology Hot-point drill ice drilling penetration rate snow–firn temperature thermal equilibrium |
| title | Shallow hot-point drill system for active layer temperature measurement along Zhongshan–Dome A traverse, Antarctica |
| title_full | Shallow hot-point drill system for active layer temperature measurement along Zhongshan–Dome A traverse, Antarctica |
| title_fullStr | Shallow hot-point drill system for active layer temperature measurement along Zhongshan–Dome A traverse, Antarctica |
| title_full_unstemmed | Shallow hot-point drill system for active layer temperature measurement along Zhongshan–Dome A traverse, Antarctica |
| title_short | Shallow hot-point drill system for active layer temperature measurement along Zhongshan–Dome A traverse, Antarctica |
| title_sort | shallow hot point drill system for active layer temperature measurement along zhongshan dome a traverse antarctica |
| topic | Hot-point drill ice drilling penetration rate snow–firn temperature thermal equilibrium |
| url | https://www.cambridge.org/core/product/identifier/S0260305520000877/type/journal_article |
| work_keys_str_mv | AT yazhouli shallowhotpointdrillsystemforactivelayertemperaturemeasurementalongzhongshandomeatraverseantarctica AT xiaopengfan shallowhotpointdrillsystemforactivelayertemperaturemeasurementalongzhongshandomeatraverseantarctica AT pavelgtalalay shallowhotpointdrillsystemforactivelayertemperaturemeasurementalongzhongshandomeatraverseantarctica AT yinkedou shallowhotpointdrillsystemforactivelayertemperaturemeasurementalongzhongshandomeatraverseantarctica AT siyulu shallowhotpointdrillsystemforactivelayertemperaturemeasurementalongzhongshandomeatraverseantarctica AT shichangkang shallowhotpointdrillsystemforactivelayertemperaturemeasurementalongzhongshandomeatraverseantarctica AT xiaoli shallowhotpointdrillsystemforactivelayertemperaturemeasurementalongzhongshandomeatraverseantarctica AT jialinhong shallowhotpointdrillsystemforactivelayertemperaturemeasurementalongzhongshandomeatraverseantarctica |