What geological processes are actively affecting the region?
In the last 100 years the most activity that could be measured at or nearby Heceta Island, which is not caused by humans, is tectonic activity. Here is a summary of that activity.
The seismic activity in the area was low in the decades up to around the year 2000. Seismic ExplorerYou can see in between 2000, and 2010 activity picked up. Seismic ExplorerIn 2003 a 6-magnitude earthquake occurred nearby. Seismic ExplorerIt was followed the next year with a 6.8. Seismic ExplorerBetween 2010 and 2020 seismic activity steadily increased. Seismic ExplorerHere is the transform boundary between the Pacific plate and North American plate alongside the activity up to 2020. Seismic ExplorerIn 2013 a 7.5 earthquake registered nearby Heceta Island. Seismic ExplorerThe same month another earthquake followed registering a 5.9. Seismic Explorer
