We measure ocean tides as experienced by sea ice or ice shelves using a single GPS receiver. Such a method allows for tidal measurements to be made with the same precision regardless of its distance from a GPS base station, since such a base station is not required. Single epoch observations are shown to be accurate to about 50 mm when compared with concurrent Bottom Pressure Gauge (BPG) observations. The differences between the GPS and BPG observations are largely free from power at tidal frequencies. Furthermore, harmonic tidal analyses show that these GPS observations allow the correct determination of diurnal and semi-diurnal tidal constituents, meaning that observations of this type can be assimilated into numerical tide models.

Item Type:	Refereed Article
Keywords:	Global positioning system; Ice; Mathematical models; Pressure gages; Signal receivers; Tsunamis; Tidal measurements; Geophysics; GPS; numerical model; ocean tide; sea ice
Research Division:	Earth Sciences
Research Group:	Physical Geography and Environmental Geoscience
Research Field:	Physical Geography and Environmental Geoscience not elsewhere classified
Objective Division:	Expanding Knowledge
Objective Group:	Expanding Knowledge
Objective Field:	Expanding Knowledge in the Earth Sciences
UTAS Author:	King, MA (Professor Matt King)
ID Code:	81804
Year Published:	2003
Deposited By:	Geography and Environmental Studies
Deposited On:	2013-01-08
Last Modified:	2013-01-08
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