Nepal radar

Reference

Just did this in geosciences+  but I'll do it here.

Lots of tight fringes, like contour lines, is bad.  North of Kat the fringes reverse.  This is the super zone, or I like to call it the 'hammer zone'.  The whole valley is formed by the broken up hanging wall.  The maximum PGV or intensity would be in the hammer zone.  Step across to the footwall, and you find it much less.  However, precarious boulders and snowpacks are very sensitive to a few cm/s, so you lose both ways.  Firm ground motion in Kat was probably only 10-20 cm/s, but you would get soft valley amplification of 10 to 100 times.

In the hammer zone, PGV would be a few metres per second, which is enough to lift giant rocks.  In a similar earthquake in California, an entire cliff was lifted and you could only see it by some junk being sucked in.  Forget subduction zones, these things are our F5 tornadoes of earthquakes.

Further thought:  We should get a really nice image, just like this one, if our M6 thrust hits OK City.  :)  A bit smaller, but just as intense.

Oklahoma earthquakes - getting close to a storm of 4's

Ok, just 2.  But I'm waiting for 4 or 5 M4's.  That would mean something really big.  This was a shallow strike-slip under the poor old Anthony courthouse.  It can't take much more!  We've also seen a fair bit of activity along the OkCity thrust fault.  It's all primed for a 5 or 6 thrust, which will shed some bricks for sure.

Because of the deep earthquakes, we're cruising with a 1% chance per month of an M7 thrust.  This would make some parts of the city look like Nepal.  But it will never happen ....  Don't worry, be happy!

 Third 4:  This just in.  Shallow thrust, intensity 5.  Ok, we can now call it a storm.  Expect one or two more, and then a fiver or six.  Dilation Theory Rules.

4th 4:  That's enough, get on with the show.

Linux - Debian turnover, a time of great confusion

Every two years, Debian throws us into a great mess.  It's good to come out the other side.  Namely, I'm talking about the shift of Jessie to stable.  I run testing on one machine, and stable on the other.  Every once in a while, I have mucked things so much that I reinstall from a usb.  Debian loves its Toy Story names, so the install always uses the cutie names.  You have the choice of using the boring generic names.

So now on my testing machine, I have to change 'jessie' to the generic 'testing', since I don't think the new name of 'Stretch' is that established yet.  There weren't too many changes.

But on my 'stable' machine, I changed the name in 'sources.list' from 'Wheezy' to 'Jessie'.  There were thousands of updates, and I had to run 'aptitude upgrade --full-resolver' to try to get it to work.

Oh neat, this update has totally bricked my machine.  Time for a re-install.  blah.  Don't try this at home, kiddies.

Update:  It totally shattered my built-in amd apu graphics, dvi output, which I worked so hard at.  Working on analog.  I can't decide whether the new installer will have this all organized by now.

Update2:  I recompiled a new kernel, adding all the radeon stuff.  dmesg looks good, but no dvi output.  There seems to be no hope to fix this now.  As usual, I'll wait for other people to have this problem.  :)  The standard vga seems better.