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An aftershock is a smaller earthquake that occurs after a previous large earthquake, in the same area of the main shock. If an aftershock is larger than the main shock, the aftershock is redesignated as the main shock and the original main shock is redesignated as a foreshock. Aftershocks are formed as the crust around the displaced fault plane adjusts to the effects of the main shock.
Omori's Law The rate of aftershocks with time follows Omori's law.[1] Omori's law, or more correctly the modified Omori's law, is an empirical relation for the temporal decay of aftershock rates. In 1894, Fusakichi Omori published his work on the aftershocks of earthquakes, in which he stated that aftershock frequency decreases by roughly the reciprocal of time after the main shock. n(t) = \frac [K] [c+t] where: n(t) is the rate of earthquakes measured in a certain time t after the main shock, K is the amplitude, and c is the "time offset" parameter. The modified version of Omori's law, now commonly used, was proposed by Utsu in 1961.[2][3] n(t) = \frac [k] [(c+t)^p] where p modifies the decay rate and typically falls in the range 0.7–1.5. According to these equations, the rate of aftershocks decreases quickly with time. The rate of aftershocks is proportional to the inverse of time since the mainshock and this relationship can be used to estimate the probability of future aftershock occurrence.[4] Thus whatever the probability of an aftershock are on the first day, the second day will have 1/2 the probability of the first day and the tenth day will have approximately 1/10 the probability of the first day (when p is equal to 1). These patterns describe only the statistical behavior of aftershocks; the actual times, numbers and locations of the aftershocks are stochastic, while tending to follow these patterns. As this is an empirical law, values of the parameters are obtained by fitting to data after a mainshock has occurred, and they imply no specific physical mechanism in any given case.
Originally posted by daaskapital
It made me angry when watching the events of the Fukushima crisis play out. Quakes verging on the 7's and 8's were considered aftershocks, even when weeks had passed.
Bloody stupid!
Wow. I hope these people are doing okay? Just in the time I was writing this post they have had more. And the area north of that in Alaska seems to be doing some shaking. Last month it was California, but those swarms dont't seem to have the same intensity as this one. I have not seen this activity in Canada for the time I have been following patterns. Maybe they have had this before. i know that area has had earthquakes, but like this, in a 12-24 hour time frame?
I know it can be frustrating at times. I have something I say to my self often when dealing with disruptive souls. I am sure you have heard it in some form of semantics before. Here it is in my own translation:
Give me the Compassion I Need To Accept The Things I Can Not Change (people, places and things),
The Ability I Need To Change The Things About Myself That I Want To Change,
The Capacity To Accept The Differences.
Try to apply this to any situation and find a way to set a time aside for yourself each day to reflect and breath at peace. Meditation/Prayer, whatever works for you. Take care. Much love and understanding. Ascension211
Originally posted by ascension211
........Tried to line these up, hardly matters. This is not normal behavior for any a earthquake/aftershocks/swarms,
whatever you call them.
Wow. I hope these people are doing okay? Just in the time I was writing this post they have had more. And the area north of that in Alaska seems to be doing some shaking. Last month it was California, but those swarms dont't seem to have the same intensity as this one. I have not seen this activity in Canada for the time I have been following patterns. Maybe they have had this before. i know that area has had earthquakes, but like this, in a 12-24 hour time frame?
Adcension211
Originally posted by ascension211
reply to post by Ghostfreak1
No fear mongering spam here.
Fear mongering (or scaremongering or scare tactics) is the use of fear to influence the opinions and actions of others towards some specific end. The feared object or subject is sometimes exaggerated, and the pattern of fear mongering is usually one of repetition, in order to continuously reinforce the intended effects of this tactic, sometimes in the form of a vicious circle.
Originally posted by ascension211
Such a cavalier attitude about the people that are there. 61 quakes in less than 30 hours. That seems very high to me. Thanks for informing me.
reply to post by Nyiah