5,326 Global Earthquakes – Average per Month.

February 11, 2012 – Average Earthquakes by Month over 39 Years: I downloaded all global earthquakes between January 1, 1973 and February 10, 2012, greater than or equal to (>=) 6.0 magnitude and totaled them by month. I divided each months total by the number of days in the month (29.25 for February) to get an average per day figure, which you see graphed above. The green line, horizontally across the data, is a linear best fit trend line. The average for all months is 14.6 per day.
With a sample this large, I would have expected a much more even distribution. Why is it that March and October have significantly more earthquakes, and July has the low? One answer I considered was the fact that the earth is close to the Sun during the first part of January and at it’s furthest point during the first part of June. The data shows relatively no difference between those months? The Moon’s distance from the Earth exerts twice the gravitational pull that the Sun does.
I discounted the Winter versus Summer effect since these are global earthquakes, and include both the Southern and Northern Hemispheres.
The high of 15.6 average earthquakes per day in March and October, and the low of 13.4 in July are statistically significant at about the 82% level. There is something else going on here, and I do not know what it is. (Credits: Data – USGS, Graphics – W. G. Foster)
The Master of Disaster

About wfoster2011

Disaster researcher and current financial and economic news and events: Accidents, economics, financial, news, nature, volcanoes, floods, earthquakes, fires; airplane, ship & train wrecks; tornadoes, mine cave-ins, hurricanes, pestilence, blizzards, storms, tzuami's, explosions, pollution, famine; heat & cold waves; nuclear accidents, drought, stampedes and general. Futures trader using high volume and open interest futures markets. Also, a financial, weather and mundane astrologer with over 30 years of experience. Three University degrees from California State University Northridge: BS - Accounting MS - Busines Administration BA - Psychology Served in the U. S. Army as an Armored Platoon Leader in the 5th Battalion, 68th Armored Regiment, 8th Infantry Division (Retired). Have published three books and 36 articles available for sale through my blog: Commodology - Secret of Soyobeans (Financial Astrology) Timing is the Key (Financial Astrology) Scum City, a fiction novel (no longer available, under contract to major publisher) Currently resident of Las Vegas, NV, USA
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7 Responses to 5,326 Global Earthquakes – Average per Month.

  1. I’m expected to travel to California for the first time this year and fear earthquakes due to my lack of experience with them. Maybe I’ll go in July when global occurrence is at the lowest. Yikes.

  2. Jacquelyn Fedyk says:

    Are there more earthquakes above or below the equator?

    • wfoster2011 says:

      I’ll post a graphic of that tomorrow. plus, we’ll do east and west longitude.
      PS: Jacquelyn is one of our long term followers, thanks Jacquenlyn.

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