A
worst-case scenario shows that nearly 37,000 jobs along Oregon’s coast lie
within the boundary of a tsunami inundation zone associated with a 9.1
magnitude or greater earthquake.
Many factors determine tsunami wave heights, including how much of the
fault ruptures, how much ground upheaval or displacement occurs, the duration
of the ground shaking, how high the tide is during an earthquake, among others.
In addition, coastal geography varies greatly in Oregon. Some communities sit atop
bluffs, relatively safer and better positioned to escape an incoming wall of
water. Others face the reality that there is little elevation gain between the
normally placid Pacific and hundreds of yards if not miles inland.
In the
worst-case scenarios, all Oregon counties adjacent to the ocean would be
impacted. While Lane and Douglas counties have little of their total employment
in this zone (0.5% and 2.4%, respectively), coastal communities within those
counties are at risk. The remaining coastal counties have between 32 percent
and 47 percent of their total payroll employment within the borders of the
worst-case tsunami inundation zones.
Shown in the graph below, in a worst-case scenario (referred to as "CZXXL"), almost 80 percent of Clatsop County's employment lies in the tsunami inundation zone.
For a much more in-depth look at how different scenarios could affect employment in Oregon, read Erik Knoder and Guy Tauer's full article: Employment in Oregon's Tsunami Inundation Zones
Shown in the graph below, in a worst-case scenario (referred to as "CZXXL"), almost 80 percent of Clatsop County's employment lies in the tsunami inundation zone.
For a much more in-depth look at how different scenarios could affect employment in Oregon, read Erik Knoder and Guy Tauer's full article: Employment in Oregon's Tsunami Inundation Zones
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