Basal Melt Patterns around the Deep Ice Core Drilling Site in the Dome A Region from Ice-Penetrating Radar Measurements

Wang, Hao1,2; Tang, Xueyuan2,3; Xiao, Enzhao2; Luo, Kun4; Dong, Sheng2,5,6; Sun, Bo2

2023-04-01

10.3390/rs15071726

REMOTE SENSING   影响因子和分区

2072-4292

Basal melt in the Dome A region will influence the deep-ice-core drilling at Kunlun Station. The melting point (wet bedrock) has a higher reflectivity than the surrounding area, which can be assessed using radar echoes from the bedrock. This paper uses a linear absorption model to determine wet and dry ice-bedrock interfaces around the Kunlun drilling site. In the determination process, an artificial intelligence model was applied to extract the ice-bedrock interface for inferring the ice thickness. Additionally, the various depth-averaged attenuation rates were used to identify the maximal range of basal melting. We mapped the patterns of the wet points on the bottom of the ice sheet and the modeled basal temperature to verify the results of the wet bed conditions. According to these maps of wet bed conditions, the areas with basal melting around the drilling site primarily appear in valley walls with low basal temperatures and are linked with hydraulic potential and bedrock elevation. Identifying the ice-bedrock interface is challenging in the valley bottom area, where the melting points are less than at the valley walls. Additionally, the melting proportions of 11.8% and 3.62% were calculated from two ice-penetrating radar data in this research. The mapped melting points around the site of Kunlun ice core drilling suggest complex ice flow effects and can be used to better interpret archives of old ice for paleoclimate research.

basal melt deep ice core drilling ice-penetrating radar (IPR) artificial intelligence Dome A

SCI ; EI

英语

其他

National Key Research and Development Program of China["2019YFC1509102","2021YFB3900105-7"] ; National Natural Science Foundation of China["42276257","41876230","41941006"]

Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology

Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology

WOS:000970249200001

MDPI

20231714004512

Geological surveys ; Ground penetrating radar systems ; Ice ; Infill drilling ; Landforms ; Melting point ; Radar measurement

Structural Members and Shapes:408.2 ; Geology:481.1 ; Oil Field Production Operations:511.1 ; Radar Systems and Equipment:716.2 ; Physical Properties of Gases, Liquids and Solids:931.2

Web of Science

1.China Univ Geosci, Sch Earth Sci & Resources, Beijing 100083, Peoples R China
2.Polar Res Inst China, Key Lab Polar Sci, Minist Nat Resources MNR, Shanghai 200136, Peoples R China
3.Shanghai Jiao Tong Univ, Sch Oceanog, Shanghai 200030, Peoples R China
4.Xian Univ Architecture & Technol, Inst Interdisciplinary & Innovate Res, Xian 710055, Peoples R China
5.Univ Sci & Technol China, Sch Earth & Space Sci, Hefei 230026, Peoples R China
6.Southern Univ Sci & Technol, Dept Earth & Space Sci, Shenzhen 518055, Peoples R China

Wang, Hao,Tang, Xueyuan,Xiao, Enzhao,et al. Basal Melt Patterns around the Deep Ice Core Drilling Site in the Dome A Region from Ice-Penetrating Radar Measurements[J]. REMOTE SENSING,2023,15(7).

Wang, Hao,Tang, Xueyuan,Xiao, Enzhao,Luo, Kun,Dong, Sheng,&Sun, Bo.(2023).Basal Melt Patterns around the Deep Ice Core Drilling Site in the Dome A Region from Ice-Penetrating Radar Measurements.REMOTE SENSING,15(7).

Wang, Hao,et al."Basal Melt Patterns around the Deep Ice Core Drilling Site in the Dome A Region from Ice-Penetrating Radar Measurements".REMOTE SENSING 15.7(2023).