Prof. LIU Lin

• Cryosphere Geophysics
• Geodesy and Near Surface Geophysics
• Remote sensing
• Deep Learning Applications in Earth System Science

• Chung Chi College (Department Coordinator)

• Van Dam, T., Whitehouse, P., and Liu, L. (2024), GNSS and the Cryosphere, in GNSS Monitoring of the Terrestrial Environment: Earthquakes, Volcanoes, and Climate Changes, C. Kreemer and Y. Aoki, Elsevier 

• Liu, L. (2021), A review of Deep Learning for Cryospheric Studies, in Deep Learning for the Earth Sci- ences, G. Camps-Valls, D. Tuia, X. X. Zhu, and M. Reichstein, Eds., Wiley & Sons. https://doi.org/10.1002/9781119646181.ch17.  

(please refer to my lab website or my Google Scholar profile for full publication list) 

• Ran, J., Liu, L., Zhang, G., Shum, C.K., Qiu, J., Hu, R., Li, J., Peng, J., Hwang, C., Luan, Y., Sun, Y., Xu, M., Chen, D., Ding, J., and Zhong, Y. (2024), Contrasting lake changes in Tibet revealed by recent multi-modal satellite observations, Science of The Total Environment, 908, 168342, https://doi.org/10.1016/j.scitotenv.2023.168342.  

• Hu, Y., Liu, L., Huang, L., Zhao, L., Wu, T., Wang, X., and Cai, J. (2023), Mapping and Characterizing Rock Glaciers in the Arid Western Kunlun Mountains Supported by InSAR and Deep Learning, Journal of Geophysical Research: Earth Surface, 128, e2023JF007206, https://doi.org/10.1029/2023JF007206.  

• Luo, X., Hu, Z., and Liu, L. (2023), Investigating the seasonal dynamics of surface water over the Qinghai-Tibet Plateau using Sentinel-1 imagery and a novel gated multiscale ConvNet, International Journal of Digital Earth, 16(1), 1373-1395, https://doi.org/10.1080/17538947.2023.2198266.  

• Wu, Z., Ma, P., Zheng, Y., Gu, F., Liu, L., and Lin, H. (2023), Automatic detection and classification of land subsidence in deltaic metropolitan areas using distributed scatterer InSAR and Oriented R-CNN, Remote Sensing of Environment, 290, 113545, https://doi.org/10.1016/j.rse.2023.113545.  

• Xia, Z., Huang, L., Fan, C., Jia, S., Lin, Z., Liu, L., Luo, J., Niu, F., and Zhang, T. (2022), Retro- gressive thaw slumps along the Qinghai-Tibet Engineering Corridor: a comprehensive inventory and their distribution characteristics, Earth System Science Data, 14, 3875-3887, https://doi.org/10.5194/essd-14-3875-2022.  

• Chen, J., Wu, T., Liu, L., Gong, W., Zwieback, S., Zou, D., Zhu, X., Hu, G., Du, E., Wu, X., Li, R., and Yang S. (2022), Increased water content in the active layer revealed by regional-scale InSAR and independent component analysis on the central Qinghai-Tibet Plateau, Geophysical Research Letters, 49, e2021GL097586, https://doi.org/10.1029/2021GL097586.  

• Lai, Y., Zhang, B., Yao, Y., Liu, L., Yan, X., He, Y., and Ou, S. (2022), Reconstructing the Data Gap between GRACE and GRACE Follow-On at the Basin Scale Using Artificial Neural Network, Science of The Total Environment, 153770, https://doi.org/10.1016/j.scitotenv.2022.153770.  

• Chen, J., Wu, T., Zou, D., Liu, L., Wu, X., Gong, W., Zhu, X., Li, R., Hao, J., Hu, G., Pang, Q., Zhang, J., and Yang, S. (2022), Magnitudes and patterns of large-scale permafrost ground deformation revealed by Sentinel-1 InSAR on the central Qinghai-Tibet Plateau, Remote Sensing of Environment, 268, 112778, https://doi.org/10.1016/j.rse.2021.112778.  

• Wang, X., Liu, L., Hu, Y., Wu, T., Zhao, L., Liu, Q., Zhang, R., Zhang, B., and Liu, G. (2021), Multi-decadal geomorphic changes of a low-angle valley glacier in East Kunlun Mountains: remote sensing observations and detachment hazard assessment, Natural Hazards and Earth System Sciences, 21, 2791- 2810, https://doi.org/10.5194/nhess-21-2791-2021.  

• Ran, J., Ditmar, P., Liu, L., Xiao, Y., Klees, R., and Tang, X. (2021), Analysis and mitigation of biases in Greenland ice sheet mass balance trend estimates from GRACE mascon products, Journal of Geophysical Research: Solid Earth, 126, e2020JB020880, https://doi.org/10.1029/2020JB020880.  

• Zhang, J., Liu, L., Su, L., and Che, T. (2021), Three in one: GPS-IR measurements of ground surface elevation changes, soil moisture, and snow depth at a permafrost site in the northeastern Qinghai–Tibet Plateau, The Cryosphere, 15, 3021–3033, https://doi.org/10.5194/tc-15-3021-2021. 

• Zhang, E., Liu, L., Huang, L., and Ng, K. S.(2021), An automated, generalized, deep-learning-based method for delineating the calving fronts of Greenland glaciers from multi-sensor remote sensing imagery, Remote Sensing of Environment, 254, 112265, https://doi.org/10.1016/j.rse.2020.112265. 

• Khan, S. A., Bjørk, A.A., Bamber, J.L., Morlighem, M., Bevis, M., Kjær, K.H., Mouginot, J., Løkkegaard, A., Holland, D.M., Aschwanden, A. and Zhang, B., Helm, V., Korsgaard, N., Colgan, W., Larsen, N., Liu, L., Hansen, K., Barletta, V., Dahl-Jensen, T., Søndergaard, A. S., Csatho, B., Sasgen, I., Box, J., and Schenk, T. (2020), Centennial response of Greenland’s three largest outlet glaciers, Nature Communications, 11, 5718, https://doi.org/10.1038/s41467-020-19580-5. 

• Huang, L., J. Luo, Z. Lin, F. Niu, and L. Liu (2020), Using Deep Learning to Map Retrogressive Thaw Slumps in the Beiluhe Region (Tibetan Plateau) from CubeSat Images, Remote Sensing of Environment, 237, 111534, https://doi.org/10.1016/j.rse.2019.111534. 

• Jiang, G. , X. Qiao, X. Wang, R. Lu, L. Liu, H. Yang, Y. Su, L. Song, B. Wang, T-f. Wong (2020), GPS observed horizontal ground extension at the Hutubi (China) underground gas storage facility and its application to geomechanical modeling for induced seismicity, Earth and Planetary Science Letters, https://doi.org/10.1016/j.epsl.2019.115943. 

• Zhang, E., L. Liu, L. Huang (2019), Automatically delineating the calving front of Jakobshavn Isbræ from multitemporal TerraSAR-X images: a deep learning approach, The Cryosphere, 13, 1729-1741, https://doi.org/10.5194/tc-13-1729-2019. 

• Chen, X., L. Liu, A. Bartsch (2019), Detecting soil freeze/thaw onsets in Alaska using SMAP and ASCAT data, Remote Sensing of Environment, 220, 59–70, https://doi.org/10.1016/j.rse.2018.10.010. 

• Zhang, B., E. Zhang, L. Liu, S. A. Khan, T. van Dam, Y. Yao, M. Bevis, V. Helm (2018), Geodetic measurements characterize the short-term changes of glacial mass near Jakobshavn Isbræ (Greenland) from 2007 to 2017, Earth and Planetary Science Letters, 503, 216–226, https://doi.org/10.1016/j.epsl.2018.09.029. 

• Chen, J., L. Liu, T. Zhang, B. Cao, H. Lin (2018), Using Persistent Scatterer Interferometry to map and quantify permafrost thaw subsidence: a case study of Eboling Mountain on the Qinghai-Tibet Plateau, Journal of Geophysical Research: Earth Surface, 123, https://doi.org/10.1029/2018JF004618. 

• Hu, Y., Liu, L., Larson, K. M., Schaefer, K. M., Zhang, J., & Yao, Y. (2018). GPS interferometric reflectometry reveals cyclic elevation changes in thaw and freezing seasons in a permafrost area (Barrow, Alaska). Geophysical Research Letters, 45, 5581–5589, https://doi.org/10.1029/2018GL077960. 

• Liu, L. and K. M. Larson (2018), Decadal changes of surface elevation over permafrost area estimated using reflected GPS signals, The Cryosphere, 12, 477-489, https://doi.org/10.5194/tc-12-477-2018. 

• Schuster, P. F., et al., including Liu, L. (2018). Permafrost stores a globally significant amount of mercury, Geophysical Research Letters, 45, 1463-1471, https://doi.org/10.1002/2017GL075571. 

• Liu, L., S. A. Khan, T. van Dam, J. H. Y. Ma, and M. Bevis (2017), Annual variations in GPS-measured vertical displacements near Upernavik Isstrøm (Greenland) and contributions from surface mass loading, Journal of Geophysical Research: Solid Earth, 122, 677-691, https://doi.org/10.1002/2016JB013494. 

• Wang, X., L. Liu, L. Zhao, T. Wu, Z. Li, and G. Liu (2017), Mapping and inventorying active rock glaciers in the northern Tien Shan of China using satellite SAR interferometry, The Cryosphere, 11, 997-1014, https://doi.org/10.5194/tc-11-997-2017. 

• Liu, L., K. M. Schaefer, A. C. Chen, A. Gusmeroli, H. A. Zebker, and T. Zhang (2015), Remote sensing measurements of thermokarst subsidence using InSAR, Journal of Geophysical Research: Earth Surface, 120, 1935-1948, https://doi.org/10.1002/2015JF003599. 

• Liu, L., E. Jafarov, K. Schaefer, B. M. Jones, H. Zebker, C. Williams, J. Rogan, and T. Zhang (2014), InSAR detects increase in surface subsidence caused by an Arctic tundra fire, Geophysical Research Letters, 41, 3906-3913, https://doi.org/10.1002/2014GL060533. 

• Khan, S. A., K. H. Kjær, M. Bevis, J. L. Bamber, J. Wahr, K. K. Kjeldsen, A. A. Bjørk, N.J. Korsgaard, L. A. Stearns, M. R. Broeke, L. Liu, N. K. Larsen, I. S. Muresan (2014), Sustained mass loss of the Northeast Greenland ice sheet triggered by regional warming, Nature Climate Change, 4, 292-299, https://doi.org/10.1038/nclimate2161. 

Jia, S., Zhang, T., Fan, C., Liu, L., and Shao, W. (2021), Research Progress of InSAR Technology in Permafrost, Advances in Earth Science (in Chinese), 36(7), 694–711.

Active 

• 2024 – present: Multi-sensor monitoring, geophysical interpretation and prediction of sea level rise in Hong Kong, Hong Kong Research Grants Council (RGC) Collaborative Research Fund 

• 2023 – present: Rock glacier distribution across the Hindu Kush Himalaya and the French Alps based on remote sensing and deep learning, PROCORE-France/Hong Kong Joint Research Scheme 

• 2022 – present: Characterization of ancient lake basins on Mars using advanced topographic modelling and innovative spectroscopic techniques, RGC Collaborative Research Fund 

• 2022 – present: Deep-learning-based mapping of rock glaciers on the Qinghai-Tibet Plateau, RGC General Research Grant 

• 2022 – present: Thermokarst Landforms on the Qinghai-Tibet Plateau: Spatio-temporal evolution and future changes, Hong Kong Research Grants Council NSFC/RGC Joint Research Scheme 

Past 

• 2020 – 2023:  DeepThaw: Deep-learning-based mapping of thermokarst landforms on the Tibetan Plateau, Hong Kong RGC General Research Grant 

• 2019 – 2021: GNSS-RECIPE: Global Navigation Satellite System Reflectometry Studies of Elevation Changes in Permafrost Areas, Hong Kong RGC General Research Grant 

• 2018 – 2021: Kinematics and dynamics of active rock glaciers in western China, Hong Kong RGC General Research Grant 

• 2016 – 2019: Investigation of characteristics and mechanism of earthquakes associated with the Hutubi gas reservoir, Hong Kong Research Grants Council NSFC/RGC Joint Research Scheme, Co-investigator 

• 2016 – 2019: Radar remote sensing investigations on thermokarst dynamics on the Qinghai-Tibet Plateau, China, Hong Kong RGC General Research Grant 

• 2015 – 2018: Mass Balance of Greenland Outlet Glaciers: Non-secular Variations From Space Geodetic Measurements, Hong Kong RGC Early Career Scheme Grant