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Research Field

Government Commissioned Projects

Explore the end of the world

Diagnosis, Investigation, and Prediction of cryosphere change around the Jang Bogo Station 이미지
Ministry of Oceans and Fisheries Diagnosis, Investigation, and Prediction of cryosphere change around the Jang Bogo Station
Research period 2014/09 ~ 2017/
Responsible person Won Sang Lee

Detail


Discovering the Causes of Sea-Level Rise in the Polar Regions


Diagnosis, Investigation, and Prediction of cryosphere change around the Jang Bogo Station



Won Sang Lee wonsang@kopri.re.kr




Variations in ice mass balance in polar regions, triggered by climate change, can interact with the lithosphere beneath the ice, and geological structures with higher seismic activity and geothermal heat flux are likely to face accelerated ice mass loss.


The enhanced ice mass loss due to an active geological structure causes additional tectonic events such as glacial isstatic adjustment, which eventually causes further ice mass changes. In terms of ocean-ice interaction, the atmospheric warming and increased melting by warm circumpolar deep water circulation beneath ice shelves can trigger enhanced ice mass flux.


To acquire reliable projections for the sea-level rise in response to warming climates, there is a necessity for improving the understanding of the processes controlling the behavior of glaciers.


Monitoring David Glacier and Nansen Ice Shelf located near the Jang Bogo Station may serve as an appropriate starting point for investigating cryospheric evolution.


During the research period, this study constructed an integrated cryosphere monitoring system. The capacity for long-term monitoring through an integrated observation network will generate deeper insight into cryosphere-lithosphere-ocean interaction.


The 2016/2017 Antarctic expedition includes helicopter geophysical survey and observation by autonomous underwater vehicle (AUV), which will contribute to the enhanced prediction of future sea-level rise by providing improved information on the ice flow mechanism.


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Figure 1. Investigation ofcryospheric evolution through understanding of interactions between subglacial lake-glacier-ice tongue-system.


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Figure 2. Acceleration of ice shelf collapse by climate change. (a) Nansen Ice Shelf surface melt pond. (b) Melt waterfall into Nansen Ice Shelf fracture.



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Figure 3.Integrated cryosphere monitoring system. (a) Installation map. (b) AMIGOS system. (c) GPS observation. (d) EIS camera. (e)Autonomous underwater vehicle. (f) Satellite remote sensing. (g) Ocean bottom seismograph. (h) Hydrophone. (i) Seismic monitoring system.


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