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Observed variability of the South Pacific westward sea level anomaly signal in the presence of bottom topography
Citation
Maharaj, AM and Cipollini, P and Holbrook, NJ, Observed variability of the South Pacific westward sea level anomaly signal in the presence of bottom topography, Geophysical Research Letters, 32, (4) pp. L04611. ISSN 0094-8276 (2005) [Refereed Article]
Abstract
This study investigates the behavior of westward propagating sea level anomalies across the South Pacific Ocean, with a focus on the long Rossby wave signal determined from filtered TOPEX/Poseidon and ERS satellite altimeter data. An evaluation of the energy variability of the signal using a two-dimensional Radon Transform analysis suggests that Rossby waves interact with both ridges and seamounts at various locations across the basin. Anomalously slow Rossby wave phase speeds are found over steep, isolated bathymetric features in the tropical South Pacific and over the plateau around New Zealand. Interaction with ridges increases the energetic variability, range of dominant propagation speeds, and meridional deviations in the Rossby wave signal. Copyright 2005 by the American Geophysical Union.
Item Details
Item Type: | Refereed Article |
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Research Division: | Earth Sciences |
Research Group: | Oceanography |
Research Field: | Physical oceanography |
Objective Division: | Environmental Policy, Climate Change and Natural Hazards |
Objective Group: | Adaptation to climate change |
Objective Field: | Social impacts of climate change and variability |
UTAS Author: | Holbrook, NJ (Professor Neil Holbrook) |
ID Code: | 52570 |
Year Published: | 2005 |
Web of Science® Times Cited: | 16 |
Deposited By: | Geography and Environmental Studies |
Deposited On: | 2008-08-01 |
Last Modified: | 2011-10-06 |
Downloads: | 0 |
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