Sea surface height determination by GPS in sea ice region of Lutzow-Holm Bay, Antarctica

• Main Authors: Koichiro Doi, Noritsune Seo, Shigeru Aoki, Kazuo Shibuya
• Format: Report
• Language: English
• Published: National Institute of Polar Research 2002
• Subjects: Liitzow-Holm Bay; sea ice GPS; sea surface height; Antarc*; Antarctica; Polar geoscience; Sea ice
• Online Access: https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=3112; http://id.nii.ac.jp/1291/00003112/; https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=3112&item_no=1&attribute_id=18&file_no=1

Global Positioning System (GPS) measurements were conducted at five sites on sea ice in Liitzow-Holm Bay, Antarctica We deteimined sea surface height (SSH) at each point aftei correcting for ocean tides, atmospheric pressuie and vertical distance from sea surface to ice suiface The overall erroi of the obtained SSH is estimated as smaller than 10cm We also obtained sea surface dynamic height (SSDT) by subtiacting synthetic geoidal height from the observed SSH The obtained SSDT values show good agreement with those calculated from the fine resolution Antaictic model (FRAM) After taking tempoial variations ot SSH into consideration the values took higher values at the southern end of the bay than at the northern end of the bay This spatial feature corresponds to the southward increase of SSDT across the continental slope