气候变化领域集成服务门户(CCPortal): Bathymetry-Constrained Navigation of Argo Floats Under Sea Ice on the Antarctic Continental Shelf

CCPortal

DOI	10.1029/2020GL087019
	Bathymetry-Constrained Navigation of Argo Floats Under Sea Ice on the Antarctic Continental Shelf
	Wallace L.O.; van Wijk E.M.; Rintoul S.R.; Hally B.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:11
英文摘要	Antarctic continental shelf waters are poorly sampled, particularly beneath sea ice during winter. Profiling floats could help fill this gap, but floats are unable to surface to obtain a satellite position when ice is present. We deployed Argo profiling floats in a coastal polynya with a novel mission to rest on the sea floor between profiles. “Parking” on the seabed minimized the drift of the floats and allowed year-round, full-depth measurements over multiple winters. Measurements of water depth derived from the floats were used in combination with known bathymetry to constrain the position of profiles collected under ice. Errors were quantified by withholding known positions and comparing them to estimated positions; the bathymetrically constrained algorithm outperformed linear interpolation. A similar approach could potentially be used to geolocate other under-ice oceanographic platforms that measure water depth. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Bathymetry; Sea ice; Constrained algorithms; Constrained navigation; Continental shelves; Depth measurements; Linear Interpolation; Measurements of; Profiling float; Satellite position; Hydrographic surveys; algorithm; Argo; bathymetry; continental shelf; error analysis; navigation; polynya; satellite data; sea ice; seafloor; water depth
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170304
作者单位	School of Science, RMIT University, Melbourne, VIC, Australia; CSIRO Oceans and Atmosphere, Hobart, TAS, Australia; Australian Antarctic Program Partnership, University of Tasmania, Hobart, TAS, Australia; Centre for Southern Hemisphere Oceans Research, Hobart, TAS, Australia
推荐引用方式 GB/T 7714	Wallace L.O.,van Wijk E.M.,Rintoul S.R.,et al. Bathymetry-Constrained Navigation of Argo Floats Under Sea Ice on the Antarctic Continental Shelf[J],2020,47(11).
APA	Wallace L.O.,van Wijk E.M.,Rintoul S.R.,&Hally B..(2020).Bathymetry-Constrained Navigation of Argo Floats Under Sea Ice on the Antarctic Continental Shelf.Geophysical Research Letters,47(11).
MLA	Wallace L.O.,et al."Bathymetry-Constrained Navigation of Argo Floats Under Sea Ice on the Antarctic Continental Shelf".Geophysical Research Letters 47.11(2020).