The biggie is that you can take a zoom lens and look across water and there is no measurable curve. No matter how far you go. Zero.
So what do we have totally wrong?
Optics or the shape of the earth?
10KM Deep Worldwide Earthquakes, USGS Raw Data Dig/Analysis, 2000-Present
An Anon (https://shepardessoffire.home.blog/) was working on this earlier and it peaked my interest so I did a little digging, as per request.
The percent values in the chart (Y-axis) represents the percentage of total earthquakes (between 3-9 Richter) that occurred at that depth in the first 6 months of that year. I also included the total percentage of all depths analyzed. The data goes from 2000-2019, but it's listed as 1-20 (on the X), so whatever.
I started by looking at 10km deep, as requested, but found there were also anomalies at 5km (not really), 30km, 33km and 35km as well. As was stated previously by Anon, the USGS uses 'default' numbers to estimate depth when unable to get exact data, for whatever reason (the real question I guess). Again, I used the first 6 months of every year, maybe I'll fill in the rest later.
Anyway, it looks interesting, I figured I'd post it since I had it done, might help someone. I don't know what to make of it really. There are certainly a huge number of earthquakes whose depths are total guesses it seems. Something to think about.
I never thought I'd be exploring the history of earthquakes today, but here we are.
Good Night, God Bless.