A citizens action group - - has erected informational billboards on Oregon Highway 30 as it runs between Portland and Linnton, Oregon. The signs warn the public of the hazard posed by tank farms containing hazardous chemicals and petroleum products that could pose serious risk to life if subjected with a natural or man created event. The group says that the aging tanks - many of which sit on infill - could be damaged or explode spilling their contents into the Willamette and downstream, the Columbia Rivers potentially causing an extreme threat to life.


The Cascadia Subduction Zone is a geological region located off the coast of the Pacific Northwest of North America. It is a tectonic plate boundary where the Juan de Fuca Plate is subducting (being forced beneath) the North American Plate. The subduction zone stretches approximately 1,000 kilometers (620 miles) from northern California to southern British Columbia, Canada. The Cascadia Subduction Zone is known for its potential to generate large, megathrust earthquakes. These are some of the most powerful and destructive earthquakes on Earth. The last major earthquake in the Cascadia Subduction Zone occurred in 1700 and is estimated to have had a magnitude of around It caused a massive tsunami that reached the coasts of Japan. Scientists and researchers continue to study the Cascadia Subduction Zone to better understand its seismic activity and the potential risks it poses to the populated areas along the Pacific Northwest. Efforts are being made to improve earthquake monitoring, early warning systems, and preparedness to mitigate the potential impact of future earthquakes in the region.


Size: 5272px × 3948px
Location: Portland,Oregon
Photo credit: © Ken Hawkins / Alamy / Afripics
License: Royalty Free
Model Released: No

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