Journal articles
Low-frequency bursts of horizontally polarized waves in the Arctic sea-ice cover
Abstract : We report the detection of bursts of low-frequency waves, typically f = 0.025 Hz, on horizontal channels of broadband seismometers deployed on the Arctic sea-ice cover during the DAMOCLES (Developing Arctic Modeling and Observing Capabilities for Long-term Environmental Studies) experiment in spring 2007. These bursts have amplitudes well above the ambient ice swell and a lower frequency content. Their typical duration is of the order of minutes. They occur at irregular times, with periods of relative quietness alternating with periods of strong activity. A significant correlation between the rate of burst occurrences and the ice-cover deformation at the ~400 km scale centered on the seismic network suggests that these bursts are caused by remote, episodic deformation involving shearing across regional-scale leads. This observation opens the possibility of complementing satellite measurements of ice-cover deformation, by providing a much more precise temporal sampling, hence a better characterization of the processes involved during these deformation events.
https://hal-insu.archives-ouvertes.fr/insu-00647088
Contributor : Pascale Talour <>
Submitted on : Wednesday, May 26, 2021 - 11:37:08 AM
Last modification on : Thursday, May 27, 2021 - 3:35:29 AM
Contributor : Pascale Talour <>
Submitted on : Wednesday, May 26, 2021 - 11:37:08 AM
Last modification on : Thursday, May 27, 2021 - 3:35:29 AM
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