>>1300912

PS - I highly doubt there would be a breakoff shelf on the south side of the Big Island (Hawaii is its proper name) and the reason is, to be as big a volcanic island as it is, the underwater profile is huge!

With such a large base underwater, only a gigantic explosion could take out the south beach side. That can happen, but the lava is nonexplosive when compared to the high gas content of strombolic explosive events. It flows and although it can erupt into the air, a few hundred feet of explosives is nothing compared to even a small stromboli volcano.

When gas makeup in the lava is high, no other dynamic is needed. The gas does it all. Think Krakatoa or Vesuvius.

BOOM!

And a gas-driven boom that goes to 50000 feet in no time.

A very large explosion on Hawaii would be that a jillion gallons of seawater made it into the lava dome. Not too likely as the water steams out instantly and cannot penetrate deep enough to BOOM.

>>1301016

The earthquakes are probably from lava cracking colder hard rock as the lava dome melts more rock

Hot as hell lava makes for a nasty encounter with unmelted bedrock. Expansion from heat can rock the area with shakes.

>>1301067

Could be a series of preshocks, but not likely. That volcano has been an oozer for centuries. Those eruptions are slaggy and long-lived. Still hot lava can cause lots of issues. Big Strombolic volcanoes can have hundreds of larger quakes before it takes out the region with a multimegaton-equivalent blast

>>1301143

Thanks!

We all have a lifetime of work and hobbies. This whole seismic and volcanic hobby of mine has decades of study.

I have seen pre and post seismic and volcanic events and studies all over the world.

This volcano is having all the activity on the south side of the island, FAR AWAY from the cone, showing that the lava dome is at the south side after hundreds of years and this will continue.

If the south side blows out, it will be an event but the island is not likely to disappear, and nothing but Easter Island is south of it. Far South!

So, blobby pahoeoe lava is most likely.

But, again, hot lava can be hell on earth when it hits cold ocean water.

That would be a huge geyser, but explosion? Not too likely.