NOAA/West Coast and Alaska Tsunami Warning Center response criteria
ten Brink, Uri S.
MetadataShow full item record
West Coast/Alaska Tsunami Warning Center (WCATWC) response criteria for earthquakes occurring in the Atlantic and Caribbean basins are presented. Initial warning center decisions are based on an earthquake’s location, magnitude, depth, distance from coastal locations, and precomputed threat estimates based on tsunami models computed from similar events. The new criteria will help limit the geographical extent of warnings and advisories to threatened regions, and complement the new operational tsunami product suite. Criteria are set for tsunamis generated by earthquakes, which are by far the main cause of tsunami generation (either directly through sea floor displacement or indirectly by triggering of sub-sea landslides). The new criteria require development of a threat data base which sets warning or advisory zones based on location, magnitude, and pre-computed tsunami models. The models determine coastal tsunami amplitudes based on likely tsunami source parameters for a given event. Based on the computed amplitude, warning and advisory zones are pre-set.
This paper is not subject to U.S. copyright. The definitive version was published in Science of Tsunami Hazards 28, no. 2 (2009): 86-107.
Showing items related by title, author, creator and subject.
ten Brink, Uri S. (Elsevier B.V., 2009-03-28)Assessment of natural hazards typically relies on analysis of past occurrences of similar disaster events. Assessment of tsunami hazard to the Atlantic coast of the Unites States poses a scientific challenge because of the ...
Geist, Eric L.; Lynett, Patrick J.; Chaytor, Jason D. (Elsevier B.V., 2008-10-18)Tsunami generation from the Currituck landslide offshore North Carolina and propagation of waves toward the U.S. coastline are modeled based on recent geotechnical analysis of slide movement. A long and intermediate wave ...
ten Brink, Uri S.; Chaytor, Jason D.; Geist, Eric L.; Brothers, Daniel S.; Andrews, Brian D. (Elsevier, 2014-03-22)Tsunami hazard is a very low-probability, but potentially high-risk natural hazard, posing unique challenges to scientists and policy makers trying to mitigate its impacts. These challenges are illustrated in this assessment ...