Detection of grounding line and vertical displacement of ice shelf by SAR interferometry -A case study for the Stanjukovicha Ice Shelf, East Antarctica, using ERS tandem SAR data-

• Main Authors: Taku Ozawa, Kazuo Shibuya, Koichiro Doi, Shigeru Aoki
• Format: Report
• Language: English
• Published: National Institute of Polar Research/National Institute of Polar Research/National Institute of Polar Research/National Institute of Polar Research 2002
• Subjects: SAR interferometry; Stanjukovicha Ice Shell; ocean tide grounding line; ERS tandem mission; Antarctic; The Antarctic; East Antarctica; Stanjukovicha; Antarc*; Antarctica; Ice Sheet; Ice Shelf; Polar geoscience
• Online Access: https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=3113; http://id.nii.ac.jp/1291/00003113/; https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=3113&item_no=1&attribute_id=18&file_no=1

Synthetic Aperture Radai (SAR) interfeiometiy was applied to the Stanjukovicha Ice Shelf, East Antarctica, to detect its grounding lines and vertical motion and to monitoi the ice shelf behavior The ERS-1 and -2 tandem mission data were used Fringes were clearly revealed on the obtained interferograms By tracing the inland side of the dense fringes, the grounding lines weie obtained not only for the boundary between the continental ice sheet and the ice shelf, but also foi the boundaries around the small "islands" The grounding lines derived from SAR interferometry were not always accompanied by cleai changes in surface pioperties of SAR intensity images Since the displacement fringes include the component of horizontal ice flow, the component of vertical displacement was extiacted by counting only the phase difference along the ice flow lines not absolute phase difference The derived vertical displacements agreed well with modeled sea surface height changes with a standaid deviation of 4 9 cm Thus the SAR inteiferometry demonstrated its ability and applicability in monitoimg the Antarctic ice shelf