Publications des scientifiques de l'IRD

Rawat A., Ardhuin F., Ballu V., Crawford W., Corela C., Aucan Jerôme. (2014). Infragravity waves across the oceans. Geophysical Research Letters, 41 (22), p. 7957-7963. ISSN 0094-8276.

Titre du document
Infragravity waves across the oceans
Année de publication
2014
Type de document
Article référencé dans le Web of Science WOS:000346644600026
Auteurs
Rawat A., Ardhuin F., Ballu V., Crawford W., Corela C., Aucan Jerôme
Source
Geophysical Research Letters, 2014, 41 (22), p. 7957-7963 ISSN 0094-8276
Ocean infragravity (IG) waves are low-frequency waves generated along shorelines by incident seas and swell and with heights of the order of 1cm in the open ocean. Despite these small amplitudes, they can be of much importance for ice shelf break up and errors in measurements of sea level by future satellite altimeters. A combination of numerical model results and in situ data is used to show that bottom pressure signals in the infragravity frequency band can be dominated by bursts of energy that travel across ocean basins, and can last for several days. Two particularly strong events recorded in 2008 are studied, one in the North-Pacific and the other in the North-Atlantic. It is shown that infragravity waves can travel across whole oceans basins with the signal recorded on the western shores often dominated by IG waves coming from the opposite shore of that same ocean basin.
Plan de classement
Limnologie physique / Océanographie physique [032] ; Géophysique interne [066]
Description Géographique
ATLANTIQUE ; PACIFIQUE
Localisation
Fonds IRD [F B010063636]
Identifiant IRD
fdi:010063636
Contact