Evaluation of Seasonal Sea Level Variation at Syowa Station, Antarctica, Using GPS Observations |
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| Authors: | Shigeru Aoki Kazuo Shibuya Akihiro Masuyama Taku Ozawa Koichiro Doi |
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| Institution: | (1) Center for Antarctic Environment Monitoring, National Institute of Polar Research, Kaga, Itabashi-ku, Tokyo 173-8515, Japan;(2) Hydrographic Department, Japan Coast Guard, 5-3-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan |
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| Abstract: | Global Positioning System (GPS) measurements of the vertical displacement of fast ice near Syowa Station, Antarctica, were
conducted between April and December 1998 to evaluate measurements of sea level variation derived with a conventional bottom
pressure gauge (BPG). The BPG-derived sea level revealed a seasonal variation of about 0.13 m, with a high in April–June and
a low in November–December. The GPS-derived sea level, combined with observed sea ice thickness, supported the BPG result,
with an RMS error of 0.007 m. Our result also demonstrates that GPS is a powerful technique for monitoring sea level variations.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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| Keywords: | Sea level seasonal variation GPS bottom pressure gauge Antarctica |
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