Revealing forerunners on Envisat's wave mode ASAR using the Global Seismic Network

Type Publication
Date 2012-08
Language English
Copyright 2012 AGU
Author(s) Husson R.1, Ardhuin FabriceORCID2, Collard Fabrice1, Chapron Bertrand2, Balanche Abel2
Affiliation(s) 1 : Collecte Localisat Satellites, F-29280 Plouzane, France.
2 : IFREMER, Plouzane, France.
Source Geophysical Research Letters (0094-8276) (Amer Geophysical Union), 2012-08 , Vol. 39 , N. L15609 , P. 6 p.
DOI 10.1029/2012GL052334
WOS© Times Cited 11
Abstract Swells radiating across ocean basins are fingerprints of the large ocean storms that generated them, which are otherwise poorly observed. Here we analyze the signature of one swell event in the seismic noise recorded all around the Pacific and we show that it is a natural complement to the global coverage provided by the Synthetic Aperture Radar wave mode data from ENVISAT. In particular the seismic stations are much more sensitive to low frequency and amplitude signals than buoys and SAR, capturing swell forerunners a couple of days before they can be detected from space or in situ data. This information helps detect in the SAR measurements the presence of very long swell, with periods of 22 s in our case example, that were otherwise excluded. Citation: Husson, R., F. Ardhuin, F. Collard, B. Chapron, and A. Balanche (2012), Revealing forerunners on Envisat's wave mode ASAR using the Global Seismic Network, Geophys. Res. Lett., 39, L15609, doi: 10.1029/2012GL052334.
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