Anup, N and Rohith, B and Vijith, V and Rose, L and Sreeraj, P and Sabu, A and Krishnamohan, KS and Sudeepkumar, BL and Sunil, AS and Sunil, PS (2024) Volcanic Eruption Triggers a Rare Meteotsunami in the Indian Ocean. In: Geophysical Research Letters, 51 (2).
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Abstract
This study presents the observation and evaluation of a meteotsunami in the Indian Ocean triggered by the Hunga-Tonga volcanic eruption. The event was detected through tide gauges and bottom-pressure recordings across the Indian Ocean, with an amplitude of 10�15 cm, lasting for a few days. A numerical model was used to understand the ocean's response to meteotsunami and evaluate the dynamics behind it. The model results show that the sea-level oscillations result from the ocean waves generated by a propagating Lamb wave. In addition to interaction with bathymetry, refracted and reflected waves also determine the sea-level variability. Our analysis shows that bathymetric slope plays a vital role in near-shore processes. The spectral and spatial characteristics of the meteotsunami were reminiscent of seismic tsunamis. Our research on this rare event elucidates the unresolved issues and eventually leads to designing a blueprint for future observation and modeling of meteotsunamis and seismic tsunamis. © 2024. The Authors.
| Item Type: | Journal Article |
|---|---|
| Publication: | Geophysical Research Letters |
| Publisher: | John Wiley and Sons Inc |
| Additional Information: | The copyright for this article belongs to Author. |
| Keywords: | Bathymetry; Seismology; Surface waves; Tide gages; Tsunamis; Volcanoes, Bottom pressures; Eruption triggers; Gauge pressure; Hunga-tonga; Indian ocean; Meteotsunami; Modeling; Natural hazard; Tide gauges; Volcanic eruptions, Sea level, amplitude; bathymetry; sea level change; trigger mechanism; tsunami; volcanic eruption; wave generation; wave propagation, Indian Ocean; Tonga |
| Department/Centre: | Division of Mechanical Sciences > Centre for Atmospheric & Oceanic Sciences |
| Date Deposited: | 01 Mar 2024 07:24 |
| Last Modified: | 01 Mar 2024 07:24 |
| URI: | https://eprints.iisc.ac.in/id/eprint/83927 |
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