Researchers in the Science Advances journal have found a "megathrust fault" that could ... long strip beneath North America ...

Based on new calculations, it’s believed the water seeping through the leak in the ocean could be coming from the Cascadia megathrust, where temperatures are estimated to be 300 to 500 degrees ...

Additionally, understanding that Cascadia is broken up into segments is key to assessing earthquake hazard, Watt said. That's ...