Here is more evidence for those who are interested in being informed.

The Military's Pandora's Box
by Dr. Nick Begich and Jeane Manning
http://haarp.net/

Quote:
Looking at ways to cause earthquakes, as well as to detect them, was part of the project named Prime Argus, decades ago. The money for that came from the Defense Advanced Research Projects Agency (DARPA, now under the acronym ARPA.) In 1994 the Air Force revealed its Spacecast 2020 master plan which includes weather control. Scientists have experimented with weather control since the 1940's, but Spacecast 2020 noted that "using environmental modification techniques to destroy, damage or injure another state are prohibited." Having said that, the Air Force claimed that advances in technology "compels a reexamination of this sensitive and potentially risky topic."

It may be that they are piggy-backing the use of this technology, which exists, on the effects of the moon/sun.

The reports of sonic booms in Christchurch are indicators this technology is being used.

Zbigniew Brzezenski, the world’s foremost geopolitical director, wrote about using hidden weaponry to cause earthquakes over 40 years ago.

This technology can be used for social engineering purposes.

Related:
Scientist Leuren Moret – Japan earthquake and nuclear “accident” are tectonic nuclear warfare

Independent scientist Leuren Moret, whose 2004 landmark article in the Japan Times unmasked lies and distortions by government and company officials that led to the construction of nuclear power plants in seismically dangerous areas, talks about the Japanese earthquake in this 65-minute video interview with Alfred Lambremont Webre. Moret says the “Japan earthquake and “accidents” from March 11, 2011 at the Fukushima’s 6 nuclear power plant units were deliberate acts of tectonic nuclear warfare, carried out against the populations of Japan and the nations of the Northern Hemisphere, including the U.S., Canada, and Mexico.
http://chemtrailsnorthnz.wordpress.com/2011/03/22/scientist-leuren-moret-japan-earthquake-and-nuclear-accident-are-tectonic-nuclear-warfare/

Investigative journalist Ben Vidgen talks about the evidence that shows HAARP technology may have been used to cause Christchurch earthquakes:

MUST HEAR: Investigative Journalist Talks About Christchurch Earthquakes-HAARP Links Refer: http://chemtrailsnorthnz.wordpress.com/2011/03/11/must-hear-investigative-journalist-talks-about-haarp-in-relation-to-the-christchurch-earthquakes/

US Truther Girl talks about strange coincidences which indicate US authorities had prior knowledge of Feb 22nd Christchurch earthquake, plus more. Was a techtonic weapon used? Refer:
http://chemtrailsnorthnz.wordpress.com/2011/02/25/the-truther-girls-cover-the-christchurch-earthquake-the-strange-coincidences-associated-with-it/