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dc.contributor.authorGodin, Oleg A.
dc.contributor.authorZabotin, Nikolay A.
dc.date.accessioned2018-02-28T20:48:03Z
dc.date.available2018-02-28T20:48:03Z
dc.date.issued2016
dc.identifier.citationGodin, Oleg A., and Nikolay A. Zabotin. "Resonance vibrations of the Ross Ice Shelf and observations of persistent atmospheric waves." Journal of Geophysical Research: Space Physics 121.10 (2016).
dc.identifier.urihttp://hdl.handle.net/10945/57096
dc.descriptionThe article of record as published may be found at http://dx.doi.org/10.1002/2016JA023226
dc.description.abstractRecently reported lidar observations have revealed a persistent wave activity in the Antarctic middle and upper atmosphere that has no counterpart in observations at midlatitude and low-latitude locations. The unusual wave activity suggests a geographically specific source of atmospheric waves with periods of 3??0 h. Here we investigate theoretically the hypothesis that the unusual atmospheric wave activity in Antarctica is generated by the fundamental and low-order modes of vibrations of the Ross Ice Shelf (RIS). Simple models are developed to describe basic physical properties of resonant vibrations of large ice shelves and their coupling to the atmosphere. Dispersion relation of the long surface waves, which propagate in the floating ice sheet and are responsible for its low-order resonances, is found to be similar to the dispersion relation of infragravity waves in the ice-free ocean. The phase speed of the surface waves and the resonant frequencies determine the periods and wave vectors of atmospheric waves that are generated by the RIS resonant oscillations. The altitude-dependent vertical wavelengths and the periods of the acoustic-gravity waves in the atmosphere are shown to be sensitive to the physical parameters of the RIS, which can be difficult to measure by other means. Predicted properties of the atmospheric waves prove to be in a remarkable agreement with the key features of the observed persistent wave activity.en_US
dc.description.sponsorshipNational Science Foundation
dc.description.sponsorshipUniversity of Colorado Boulder
dc.description.sponsorshipOffice of Naval Research
dc.description.sponsorshipBasic Research Challenge program
dc.format.extent15 p.
dc.publisherAGU Publications
dc.rightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.en_US
dc.titleResonance vibrations of the Ross Ice Shelf and observations of persistent atmospheric wavesen_US
dc.typeArticleen_US
dc.contributor.corporateNaval Postgraduate School (U.S.)
dc.contributor.departmentPhysics
dc.subject.authorSimple physical models of long-period vibrations of floating ice shelves are developed
dc.subject.authorIce shelf vibrations are studied as cause of persistent atmospheric wave activity in Antarctic MLT
dc.subject.authorThe hypothesis of the Ross Ice Shelf-MLT coupling explains key features of recent lidar observations
dc.description.funderOffice of Naval Research N000141310348
dc.description.funderNational Science Foundation, award CNS-0821794


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