The Spatiotemporal Surface Velocity Variations and Analysis of the Amery Ice Shelf from 2000 to 2022, East Antarctica
Abstract
:1. Introduction
2. Materials and Methods
2.1. Inter-Annual Surface Velocity between 2000 and 2022
2.2. Intra-Annual Surface Velocity between 2017 and 2022
2.2.1. The Surface Velocity Derived from Offset Tracking
2.2.2. The Surface Velocity Derived from DInSAR
2.2.3. Combination of the DInSAR Range Surface Velocity and Offset-Tracking Azimuth Surface Velocity
2.3. Ocean Temperatures
2.4. Fast-Ice Area and Thickness
2.5. Thickness of the Amery Ice Shelf
3. Results
3.1. Assessment of the Accuracy of Annual Mean Surface Velocity
3.2. Assessment of the Accuracy of Monthly Average Surface Velocity
3.3. Inter-Annual Variation in Surface Velocity from 2000 to 2022
3.4. Seasonal Variation in Surface Velocity from 2017 to 2021
4. Discussion
4.1. Analysis of Factors of Inter-Annual Variation in Surface Velocity
4.2. Effect of Fast-Ice on Variations in Intra-Annual Surface Velocity
4.3. Effect of Ocean Temperatures on Seasonal Variations in Surface Velocity
4.4. Effect of Ice Shelf Calving on Variation in Surface Velocity
5. Conclusions
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Points | R1 (m/yr) | R2 (m/yr) | R3 (m/yr) | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Methods | (1) | (2) | (3) | MEaSUREs | (1) | (2) | (3) | MEaSUREs | (1) | (2) | (3) | MEaSUREs |
Mean | 1.77 | 0.25 | 2.8 | 1.74 | 1.84 | 0.20 | 3.2 | 1.16 | 1.68 | 0.28 | 3.82 | 1.43 |
Standard | 1.81 | 0.28 | 1.28 | 0.23 | 1.73 | 0.21 | 2.03 | 0.16 | 1.75 | 0.15 | 2.56 | 0.17 |
Monitoring Point | Maximum (m/yr) | Minimum (m/yr) | Magnitude (m/yr) |
---|---|---|---|
LG0 | 122.1 | 119.7 | 2.4 |
LG1 | 397.5 | 394.8 | 2.7 |
LG2 | 786.3 | 768.2 | 18.1 |
LG3 | 398.2 | 409.64 | 11.5 |
LG4 | 368.8 | 363.5 | 12.7 |
LG5 | 362.1 | 350.1 | 12.0 |
LG6 | 399.2 | 387.3 | 11.9 |
LG7 | 1246.6 | 1076.1 | 170.5 |
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Ma, Y.; Wang, Z.; Zhang, B.; An, J.; Geng, H.; Li, F. The Spatiotemporal Surface Velocity Variations and Analysis of the Amery Ice Shelf from 2000 to 2022, East Antarctica. Remote Sens. 2024, 16, 3255. https://doi.org/10.3390/rs16173255
Ma Y, Wang Z, Zhang B, An J, Geng H, Li F. The Spatiotemporal Surface Velocity Variations and Analysis of the Amery Ice Shelf from 2000 to 2022, East Antarctica. Remote Sensing. 2024; 16(17):3255. https://doi.org/10.3390/rs16173255
Chicago/Turabian StyleMa, Yuanyuan, Zemin Wang, Baojun Zhang, Jiachun An, Hong Geng, and Fei Li. 2024. "The Spatiotemporal Surface Velocity Variations and Analysis of the Amery Ice Shelf from 2000 to 2022, East Antarctica" Remote Sensing 16, no. 17: 3255. https://doi.org/10.3390/rs16173255