(09-14-2024, 05:24 PM)guyfriday Wrote: More negative altitude quakes today.
at 9:21 PDT a 1.1 over Anderson Springs California depth -0.5 Mi
I only looked at this one.
It's on a mountain, near a geothermal power plant, so it's no surprise it was above sea level.
Quote:One of the issues here the kind of disputes the location of the equipment is that there have been a few light tremors in locations near where some of these negative altitudes and those tremors are showing in ground epicenters.
The reason is not the location of the equipment, it's the way they measure it now, with reference to sea level.
Regarding in ground epicentres, do you know the definition of epicentre?
Quote:The point on the earth's surface vertically above the focus of an earthquake.
An epicentre is always on the surface, the original location (or focus) of an earthquake is the hypocentre.
Quote:I wonder if a backlog of lightning strikes or better yet cloud to cloud, I guess we have to see thunderstorm histories, lightning might be the cause of these seismic hits.
The Portuguese meteorological service has a record lightnings, so I suppose the US should have too, probably local, as lightnings are local events.
