Articles | Volume 15, issue 10
https://doi.org/10.5194/tc-15-4727-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-15-4727-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Semi-automated tracking of iceberg B43 using Sentinel-1 SAR images via Google Earth Engine
YoungHyun Koo
Center for Advanced Measurements in Extreme Environments, University of Texas at San Antonio, San Antonio, TX 78249, USA
Hongjie Xie
CORRESPONDING AUTHOR
Center for Advanced Measurements in Extreme Environments, University of Texas at San Antonio, San Antonio, TX 78249, USA
Stephen F. Ackley
Center for Advanced Measurements in Extreme Environments, University of Texas at San Antonio, San Antonio, TX 78249, USA
Alberto M. Mestas-Nuñez
Center for Advanced Measurements in Extreme Environments, University of Texas at San Antonio, San Antonio, TX 78249, USA
Grant J. Macdonald
Center for Advanced Measurements in Extreme Environments, University of Texas at San Antonio, San Antonio, TX 78249, USA
Chang-Uk Hyun
Department of Energy and Mineral Resources Engineering, Dong-A
University, Busan 49315, Republic of Korea
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Calving, the breaking of ice bodies from the terminus of a glacier, plays an important role in the mass losses of Greenland ice sheets. However, calving parameters have been poorly understood because of the intensive computational demands of traditional numerical models. To address this issue and find the optimal calving parameter that best represents real observations, we develop deep-learning emulators based on graph neural network architectures.
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Manuscript not accepted for further review
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Polynyas are key sites of sea ice production, biological activity and carbon sequestration. The Amundsen Sea Polynya is of particular interest due to its size and location. By analyzing radar imagery and climate and sea ice data products we evaluate variations in the dynamics, area and ice production of the Amundsen Sea Polynya. In particular, we find the local sea floor topography and associated grounded icebergs play an important role in the polynyas dynamics, influencing ice production.
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Short summary
This study demonstrates for the first time the potential of Google Earth Engine (GEE) cloud-computing platform and Sentinel-1 synthetic aperture radar (SAR) images for semi-automated tracking of area changes and movements of iceberg B43. Our novel GEE-based iceberg tracking can be used to construct a large iceberg database for a better understanding of the behavior of icebergs and their interactions with surrounding environments.
This study demonstrates for the first time the potential of Google Earth Engine (GEE)...