1. Seismic observations of glaciogenic ocean waves (micro-tsunamis) on icebergs and ice shelves.
- Author
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MacAyeal, Douglas R., Okal, Emile A., Aster, Richard C., and Bassis, Jeremy N.
- Subjects
- *
SEISMIC wave studies , *TSUNAMIS , *OCEAN waves , *SEISMOMETERS , *ICEBERGS , *ICE formation & growth ,ANTARCTIC glaciers - Abstract
The article focuses on the seismic observations of glaciogenic ocean waves on icebergs and ice shelves in the Ross Sea and on the Ross Ice Shelf in Antarctica. Investigation shows that the impulsive sources of ocean surface waves are frequent in the ice-shelf and iceberg-covered environment of coastal Antarctica. Field deployment of seismometers suggests that these impulsive events are generated through glaciological mechanisms. These mechanisms include small-scale calving and edge wasting of icebergs and ice-shelf fronts, edge-on-edge closing and opening associated with iceberg collisions and the impulsive opening of void space related to ice-shelf rifting. Observations offer a background of glaciogenic ocean-wave phenomena significant to the Ross Sea.
- Published
- 2009
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