In the superwave scenario I had suggested that the arrival of a superwave would be heralded by the arrival of a gravity potential wave which could trigger earthquakes around the world.
Update (April 21st): West coast Bay Area researcher Patrick Bailey, who for many years has been studying and predicting earthquakes today sent me this important email on the rising incidence of earthquakes:
In the Last 30 days, we have had on Earth:
2 - 8.0s
6 - 7.0s
19 - 6.0s
That's a Huge Amount of Movement. I have never seen such activity!!!
West Pacific is just of out of control… I am surprised that the USGS is not issuing EQ warnings for the US!
Never seen it look this heavy guys...
Bailey's data comes from this video which reviews this global increase in earthquake activity: http://youtu.be/Rcs6IStI6kw
April 3, 2014 posting: We have been hearing news stories of earthquakes around the world (e.g., the magnitude 8.2 earthquake of the coast of Chili), and the possibility of an impending eruption of the Yellowstone supervolcano.
However, park officials at Yellowstone deny that there is anything unusual about bison migrating in their park (source: KSDK.com):
"Those bison are running because that's what they do every day in Yellowstone. This is the time of the year when bison naturally migrate in and out through the park," said Jake Lowenstern, scientist-in-charge at Yellowstone Volcano Observatory.
Migrating to forage, the scientist in charge of the Yellowstone volcano observatory says despite recent seismic activity.
"We don't anticipate an eruption anytime soon," said Lowenstern.
Meanwhile other sources say that the U.S. government has been instructing USGS to downplay and even publicly suppress information about the seismic events because they feel that Yellowstone is going to blow and the result will be a national catastrophe which FEMA is desperately preparing for. One youtube video, now removed, discussed a letter that someone received from someone on the inside at Yellowstone attesting to this suppression.
One is left to wonder whether these current seismic events are related to an oncoming superwave, and whether an initially unitary gravity wave may have become fragmented into more minor events along the way. So far, though, we have had no announcement from gravity wave observatories of any definite wave detection. So perhaps we should not look to these as being caused by events coming from the Galactic center. One person has posted that the events are related to ongoing solar activity.
Nevertheless, in the past several decades there has been a substantial rise in the incidence of potentially destructive earthquakes, of Richter 7.0 and above.
DATES FROM & TO PERIOD NO. EARTHQUAKES (Mag. > 6.99) --------------------------- ----------- ------------------------------ 1863 to 1900 incl 38 yrs 12 1901 to 1938 incl 38 yrs 53 1939 to 1976 incl 38 yrs 71 1977 to 2014 incl * 38 yrs 164 (to Mar. 2011) predict >190 in total
(data taken from the website: http://www.earth.webecs.co.uk)
Meanwhile, one person has reported in the comments below that a seismographic pulse has been detected synchronously in 10 seismographs at the Yellowstone location, something that baffles seismologists, and raising the question whether this might be gravity wave induced; see posting by Marcus below.