Revisiting Ice Flux and Mass Balance of the Lambert Glacier–Amery Ice Shelf System Using Multi-Remote-Sensing Datasets, East Antarctica

• Published in: Remote Sensing
• Main Authors: Derui Xu, Xueyuan Tang, Shuhu Yang, Yun Zhang, Lijuan Wang, Lin Li, Bo Sun
• Format: Article in Journal/Newspaper
• Language: English
• Published: MDPI AG 2022
• Subjects: Lambert Glacier; remote sensing data; ice flux; mass balance; BedMachine v2; Landsat-8; Science; Q; Antarctic; The Antarctic; East Antarctica; Amery; Amery Ice Shelf; Antarc*; Antarctica; Ice Sheet; Ice Shelf
• Online Access: https://doi.org/10.3390/rs14020391; https://doaj.org/article/885862153e2e423b8059d8043de391dd

Due to rapid global warming, the relationship between the mass loss of the Antarctic ice sheet and rising sea levels are attracting widespread attention. The Lambert–Amery glacial system is the largest drainage system in East Antarctica, and its mass balance has an important influence on the stability of the Antarctic ice sheet. In this paper, the recent ice flux in the Lambert Glacier of the Lambert–Amery system was systematically analyzed based on recently updated remote sensing data. According to Landsat-8 ice velocity data from 2018 to April 2019 and the updated Bedmachine v2 ice thickness dataset in 2021, the contribution of ice flux approximately 140 km downstream from Dome A in the Lambert Glacier area to downstream from the glacier is 8.5 ± 1.9 <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mrow><mo> </mo><mi>Gt</mi></mrow><mo>·</mo><msup><mi mathvariant="normal">a</mi><mrow><mo>−</mo><mn>1</mn></mrow></msup></mrow></semantics></math> , and the ice flux in the middle of the convergence region is 18.9 ± 2.9 <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mrow><mo> </mo><mi>Gt</mi></mrow><mo>·</mo><msup><mi mathvariant="normal">a</mi><mrow><mo>−</mo><mn>1</mn></mrow></msup></mrow></semantics></math> . The ice mass input into the Amery ice shelf through the grounding line of the whole glacier is 19.9 ± 1.3 <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo> </mo><mi>Gt</mi><mo>·</mo><msup><mi mathvariant="normal">a</mi><mrow><mo>−</mo><mn>1</mn></mrow></msup></mrow></semantics></math> . ...