Revisiting the anomalous shelf water oscillation of Buckles Bay, Macquarie Island

Historic observations of sea-level on Macquarie Island recorded an ~6 min oscillation with a perceived beat of ~3h, interpreted as two counter-rotating edge waves of slightly different frequencies. Alternative evidence is presented here that the oscillations are consistent with the fundamental shelf...

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Bibliographic Details
Published in:Continental Shelf Research
Main Authors: Galton-Fenzi, B, Scott, WD, Farrow, DE, Handsworth, R
Format: Article in Journal/Newspaper
Language:English
Published: Pergamon-Elsevier Science Ltd 2006
Subjects:
Earth Sciences
Oceanography
Physical Oceanography
Macquarie Island
Online Access:http://www.sciencedirect.com
https://doi.org/10.1016/j.csr.2006.07.010
http://ecite.utas.edu.au/71181
Description
Summary:Historic observations of sea-level on Macquarie Island recorded an ~6 min oscillation with a perceived beat of ~3h, interpreted as two counter-rotating edge waves of slightly different frequencies. Alternative evidence is presented here that the oscillations are consistent with the fundamental shelf period of Buckles Bay; an envelope characteristic of local coast and shelf features. New data from a shore-mounted tide gauge, analyzed using fourier and wavelet techniques, show an ~6:6 min phenomenon occurring in bursts every 14 h. A simple model shows that the fundamental resonant frequency may spread and comply with maximum and minimum coast and shelf features.

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