Influence of the Size, Shape and Orientation of the Earthquake Source Area in the Shumagin Seismic Gap on the Resulting Tsunami
Open Access
- 1 July 1987
- journal article
- Published by American Meteorological Society in Journal of Physical Oceanography
- Vol. 17 (7) , 1057-1062
- https://doi.org/10.1175/1520-0485(1987)017<1057:iotssa>2.0.co;2
Abstract
The directional properties of tsunamis generated by circular and elongated sources are being studied by means of maximum amplitude contours. For the tsunami source located in the Gulf of Alaska along the Aleutian Islands, the main lobe of energy is directed towards the south and southeast. The time dependent tsunami signal over the shelf and at the open ocean depicts a considerable difference, probably a result of the shelf resonance. Coriolis effects are only noticeable over the shelf regions where the longer period tsunami waves are generated.Keywords
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