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 ∼ 3 h, interpreted as two counter-rotating edge waves of slightly different frequencies. Alternative evidence is presented here that the oscillations are consistent with the fundamental sh...
| Published in: | Continental Shelf Research |
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| Main Authors: | , , , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Elsevier BV
2006
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| Subjects: | |
| Online Access: | https://doi.org/10.1016/j.csr.2006.07.010 https://researchportal.murdoch.edu.au/esploro/outputs/journalArticle/Revisiting-the-anomalous-shelf-water-oscillation/991005540371307891 https://researchportal.murdoch.edu.au/view/delivery/61MUN_INST/12135202430007891/13137087120007891 |
| Summary: | Historic observations of sea-level on Macquarie Island recorded an ∼ 6 min oscillation with a perceived beat of ∼ 3 h, 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 1-4 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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