Transcription of EARTHQUAKE MAGNITUDE, INTENSITY, ENERGY, POWER …
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EARTHQUAKE MAGNITUDE, INTENSITY, ENERGY, POWER …
EARTHQUAKE magnitude , intensity , energy , POWER LAW RELATIONS AND SOURCE MECHANISM. Kayal Geological Survey of India, 27, Nehru Road Road, Kolkata 700 016. email : EARTHQUAKE magnitude . magnitude is one of the basic and important parameters of an EARTHQUAKE . It defines the size of an EARTHQUAKE . The beginners of seismology are, in general, confused about different scales of magnitude , and sometimes they mix-up EARTHQUAKE intensity with its magnitude . Journalists often report the magnitude value of an EARTHQUAKE as its intensity ; this is wrong. There are now different magnitude scales to define the size of an EARTHQUAKE . After Richter (1935), various magnitude scales are proposed; all these scales are discussed below. Richter magnitude (or Local magnitude ) ML. Richter (1935) defined the local magnitude ML of an EARTHQUAKE observed at a station to be ML = log A - log Ao ( ) (1). where A is the maximum amplitude in millimetres recorded on the Wood- Anderson seismograph for an EARTHQUAKE at epicentral distance of km, and Ao ( ) is the maximum amplitude at km for a standard EARTHQUAKE .
EARTHQUAKE MAGNITUDE, INTENSITY, ENERGY, POWER LAW RELATIONS AND SOURCE MECHANISM J.R. Kayal Geological Survey of India, 27, J.L. Nehru Road Road, Kolkata – 700 016 email : jr_kayal@hotmail.com EARTHQUAKE MAGNITUDE Magnitude is one of the basic and important parameters of an earthquake. It defines the size of an earthquake.
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