Marine heat flow research in the Adare Trough, Antarctica
- Marine heat flow research in the Adare Trough, Antarctica
- Kim, Young-Gyun
Hong, Jong Kuk
- Adare Trough
- Issue Date
- Kim, Young-Gyun, Hong, Jong Kuk. 2016. Marine heat flow research in the Adare Trough, Antarctica. 2016 fall meeting of Korean Society of Earth and Exploration Geophysicists. KOPRI, Incheon. 2016.10.06.-07.
- last few decades to investigate the crustal structure in the Ross Sea, Antarctica,
long-term observation to monitor underwater tectonic activities and changes in the
cryospheric environment still remains challenging due to existence of sea ice in the study
region. Korea Polar Research Institute has accomplished successful deployment of ocean
bottom seismometers (OBS) in the Ross Sea collaborating with Alfred Wegener Institute
during the period of 2011-2012 and 2014 by Korean icebreaker RV Araon. The OBS
system manufactured by K.U.M. contains a hydrophone sensor that allow us to monitor
underwater acoustics generated by tectonic and ice-related events. We present
spectrograms of the continuous hydroacoustic data and various types of signals, e.g.
seismic T-waves, iceequakes, and tremors. Strong harmonic tremors are recorded in
EWO03 station located on north of the Drygalski Ice Tongue during austral winter of
2011. KOPRI installed GPS on the Drygalski Ice Tongue, but recording were stopped in
that austral winter season to save power. The gap of the GPS locations during the black
period indicates that the ice tongue flows out consistently to the East direction, but it
jumped to south direction differently from its previous movements to north. This ice
tongue movement presumably generate the tremors.
- Conference Name
- 2016 fall meeting of Korean Society of Earth and Exploration Geophysicists
- Conference Place
- KOPRI, Incheon
- Conference Date
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