Wave setup at Tristan da Cunha

Woodworth, PL. 2020 Wave setup at Tristan da Cunha. African Journal of Marine Science, 42 (2). 233-245. https://doi.org/10.2989/1814232X.2020.1776390

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Official URL: http://dx.doi.org/10.2989/1814232X.2020.1776390

Abstract/Summary

Wave setup was investigated using data from tide gauges in a small harbour at the island of Tristan da Cunha in the South Atlantic Ocean. Frequent examples of wave setup were found during the period 1986–1992, but were much less apparent after 1992, following extensions to the two breakwater arms of the harbour. The unambiguous association of wave setup with the several-decimetre spikes in Tristan sea level, which can persist for a day or so, are a warning that signals related to wave setup could also occur in other tide gauge records, where the wave setup signal could perhaps be misinterpreted as wind setup within the overall storm surge. One conclusion is that, in spite of the difficulties of access to Tristan da Cunha and its ever-present hostile wave climate, the island is undoubtedly now worthy of a permanent tide-gauge installation, which would be an important contribution to the global sea-level network.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	https://doi.org/10.2989/1814232X.2020.1776390
ISSN:	1814-232X
Date made live:	19 Aug 2020 12:38 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/528358

Item Type:

Publication - Article

Digital Object Identifier (DOI):

https://doi.org/10.2989/1814232X.2020.1776390

ISSN:

1814-232X

Date made live:

19 Aug 2020 12:38 +0 (UTC)

URI:

https://nora.nerc.ac.uk/id/eprint/528358