Landslide hazard both above and under water appears to be greatly under appreciate. These landslides are present from volcanoes and ice melt from glaciers. Like the whole East Coast and the Atlantic Ocean coast is vulnerable. The Mediterranean is also threatened. The biggest threat to the West Coast is from a Hawaiian landslide. These threats are at time scales greater than earthquakes but are much larger than earth quakes. The magnitude for the New York area I have see is in the area of a fifty foot wave. This is because 1/2 an Island off the coast of Africa is close to sliding into the ocean in it's next eruption. These threats should have been mentioned in this talk.
According to core sample research and historical records, (from Japan, which also bore the brunt of the most recent large tsunami in PacNor) the most recent huge one that affected Oregon and Washington was in January 1700. The data suggests that was a 'full rip,' across the entire subduction area. Data suggests Oregon may be overdue for something similar for its segment of the offshore subduction segment, while WA may have some more time. But noone has any illusions that it's a localized concern. Any large release of the subduction zone anywhere will affect all of the states along the coast. BTW: Alaska has suffered a few earthquake-caused tsunamis as well, most notably (I believe) the Good Friday Earthquake in 1964. (need to confirm that)
I got a better question: when was the earliest knowledge of the Cascadian Subduction Zone to American Scientists? I think the answer is in the 1970's it became a theory. So, with the ignorance of American Scientists of the 1950's, NOBODY HAD A CLUE. With that in mind, there could well be tectonic activity that we are absolutely clueless about. we have been fortunate generally, but there can be forces we have no knowledge is in the works. I am not so smug as to remain ignorant. It is a fascinating curiosity
I could imagine an ocean disturbance happening nearer to Japan than US west coast, Yet still devastate the mountains of California. There's been EXTREME deep quakes within the last year... we don't see earth changes below this thin 'stable' crust we take for granted. Question for you: did you anticipate the Lituya Bay disturbance July 9th 1958? probably not. Nor did Sonny and Howard Ulrich as they tell their story
@@Garacha222 Well, in 1958 I was anticipating Christmas, Howdy Doody and Captain Kangaroo. 3 year olds are narrow minded like that. But, what was the general consensus and acceptance of plate tectonics back then? Hindsight is always 20/20. As far as the evolution of our theories and actual knowledge goes, an example is the still evolving new findings as to the driving force beneath Yellowstone. Turns out it may be an extremely old subducted oceanic plate acting as both a fluxor and a funnel. The idea behind a stable mantle plume that just so happens to be in the 'general' vicinity of the standard location of most coastal range volcanoes always struck me as a bit beyond fortuitous. Yes indeed, our knowledge of the deep places in our planet is still in it's early childhood. We're past infancy, but not by very much.
Are you aware that when Earth comes back in plane with the Sun the narrow horizontal band of magnetism the Sun has drives global Tsunamis every day everywhere,??? that is the story of the Pyramids. ET art on YT
Landslide hazard both above and under water appears to be greatly under appreciate. These landslides are present from volcanoes and ice melt from glaciers. Like the whole East Coast and the Atlantic Ocean coast is vulnerable. The Mediterranean is also threatened. The biggest threat to the West Coast is from a Hawaiian landslide. These threats are at time scales greater than earthquakes but are much larger than earth quakes. The magnitude for the New York area I have see is in the area of a fifty foot wave. This is because 1/2 an Island off the coast of Africa is close to sliding into the ocean in it's next eruption. These threats should have been mentioned in this talk.
8.48 you're welcome
8:48
Your introductions are to long and become boring
Earthquakes, volcanoes and liquifaction more likely.
I oppose deception.
I ve got a question " when was the last tsunamis in north America, do you remember some of that?!" as i thought...
According to core sample research and historical records, (from Japan, which also bore the brunt of the most recent large tsunami in PacNor) the most recent huge one that affected Oregon and Washington was in January 1700. The data suggests that was a 'full rip,' across the entire subduction area. Data suggests Oregon may be overdue for something similar for its segment of the offshore subduction segment, while WA may have some more time. But noone has any illusions that it's a localized concern. Any large release of the subduction zone anywhere will affect all of the states along the coast. BTW: Alaska has suffered a few earthquake-caused tsunamis as well, most notably (I believe) the Good Friday Earthquake in 1964. (need to confirm that)
I got a better question: when was the earliest knowledge of the Cascadian Subduction Zone to American Scientists? I think the answer is in the 1970's it became a theory. So, with the ignorance of American Scientists of the 1950's, NOBODY HAD A CLUE.
With that in mind, there could well be tectonic activity that we are absolutely clueless about. we have been fortunate generally, but there can be forces we have no knowledge is in the works.
I am not so smug as to remain ignorant. It is a fascinating curiosity
1964. Yeah, I remember that. Do you?
I could imagine an ocean disturbance happening nearer to Japan than US west coast, Yet still devastate the mountains of California. There's been EXTREME deep quakes within the last year... we don't see earth changes below this thin 'stable' crust we take for granted. Question for you: did you anticipate the Lituya Bay disturbance July 9th 1958? probably not. Nor did Sonny and Howard Ulrich as they tell their story
@@Garacha222 Well, in 1958 I was anticipating Christmas, Howdy Doody and Captain Kangaroo. 3 year olds are narrow minded like that. But, what was the general consensus and acceptance of plate tectonics back then? Hindsight is always 20/20. As far as the evolution of our theories and actual knowledge goes, an example is the still evolving new findings as to the driving force beneath Yellowstone. Turns out it may be an extremely old subducted oceanic plate acting as both a fluxor and a funnel. The idea behind a stable mantle plume that just so happens to be in the 'general' vicinity of the standard location of most coastal range volcanoes always struck me as a bit beyond fortuitous.
Yes indeed, our knowledge of the deep places in our planet is still in it's early childhood. We're past infancy, but not by very much.
Are you aware that when Earth comes back in plane with the Sun the narrow horizontal band of magnetism the Sun has drives global Tsunamis every day everywhere,??? that is the story of the Pyramids. ET art on YT