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Originally posted by LittleDragon
Is it just me or are these occurring in a pattern? I recall that the Haiti had two Seven+ quakes before it occurred, then the major... then Chile as well, and now we get these two.
posted on 25-3-2010 @ 07:43 AM
11.3 (On Plate Boundaries Just West Of) Sumatra / Indonesia
In 1935, Charles Richter developed the local magnitude, ML scale for moderate-size (3 < ML < 7) earthquakes in southern California. The ML scale is often called the “Richter scale” by the press and the public. All of the currently used methods for measuring earthquake magnitude (ML, duration magnitude mD, surface-wave magnitude MS, teleseismic body-wave magnitude mb, moment magnitude M, etc.) yield results that are consistent with ML. In fact, most modern methods for measuring magnitude were designed to be consistent with the Richter scale. There is some confusion, however, about earthquake magnitude, primarily in the media, because seismologists often no longer follow Richter's original methodology. Richter's original methodology is no longer used because it does not give reliable results when applied to M >= 7 earthquakes and it was not designed to use data from earthquakes recorded at epicentral distances greater than about 600 km. It is, therefore, useful to separate the method and the scale in releasing estimates of magnitude to the public.
For historical earthquakes, the preferred magnitude will be the best estimate of the moment magnitude (see attached Appendix 2 – Magnitudes of Significant Earthquakes). This estimate, however, should not simply be a conversion from some other historical magnitude scale, but an estimate obtained using supplementary information (ground rupture, macroseismic data, etc.).
Originally posted by Phage
reply to post by projectvxn
Earthquakes of 7.0 and greater since 1900.
This is number 6 for 2010.
[edit on 4/6/2010 by Phage]
Originally posted by angrymomma
From what I've read from other threads all these earthquakes are happening at a normal rate. What I think the real question we should be asking is this: why is there suddenly so much hype about if it such a normal occurrence?