As usual we can’t find any big news to report.
Texas Brine says they aren’t doing anything until New Year’s Day.
We moved ALL of the explosion news links onto one page to make the sidebar better. So now all of our items are here. It has a button link on the sidebar. The explosion tie-in is that we are worried there is a giant amount of methane underground that is related to some far flung explosions. That may be wrong but we keep the info in case.
We had an interesting query from John about helicorders - “It seems they changed the scale on the helicorders from 500 to 2000 microvolts. Why did they do that? The amplitude is now 4 times smaller on the recorder when measuring the same magnitude.”
On the helicorders with new locations topic we have this response from U of Memphis -
“We have a set of default configurations we use for all new stations. Some stations are noisy and others are quiet, so we make adjustments to make it easier to identify events in the plots. I did this for LA10 just before Christmas. It has one sensor at the surface, which is rather noisy, and one in a borehole that’s very quiet. So I reduced the amplitude on the surface channels and increased it on the borehole ones. We don’t usually change it after the initial adjustment. “
The Quake Watch website adds further info -
“Basically what they are saying is that they are getting too much ‘noise’ from the installations close to the seismographs and so they are changing the sensitivity so that the signal does not get swamped by the ‘cultural noise’. This has little effect – in fact none really – on the seismic signals as the ones they are interested in are < 10Hz normally which will still be apparent when the data is filtered.
2000 mV IS quite high. Some of the Yellowstone seismos are run at 1600 mV and they are around the highest. Many of the CERI seismos run at ~200 mV.
The borehole one will show more small motion as that is the one they have ‘turned up’ (made more sensitive). The surface one will show less detail, which was what I had noticed.”
On comments we are booting off-topic ‘Batman’ theory comments. We have room here for almost all ideas (except Maya doom times et al) so our readers can freely express themselves. Many newspapers etc. kick out comments about the sinkhole so we do try to let all ideas in. Batman idea people can go to Prison Planet or any number of blogs to put up exchanges. Sorcha Faal is very odious and his hoax-followers can get their news elsewhere.
