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The Japan Meteorological Agency (JMA) Seismic Intensity Scale [1] (known in Japan as the Shindo seismic scale) [2] is a seismic intensity scale used in Japan to categorize the intensity of local ground shaking caused by earthquakes. Map of Japan showing the distribution of maximum JMA Seismic Intensities by prefecture for the 2011 Tōhoku ...
scale: Which seismic intensity scale to be used.This is the first parameter. intensity: The seismic intensity corresponding to the first scale.This is the second parameter (or first parameter when the scale is invoked as a function).
The JMA announced the Earthquake Early Warning hit (accuracy) rate for the 2011 fiscal year on 31 May 2012. The hit rate is the percentage of warnings issued immediately on the detection of P-waves with a Japan Meteorological Agency seismic intensity scale (震度, shindo) number (0 to 7) within one shindo number of the measured earthquake.
Japan Time Magnitude Coordinates Depth Intensity (shindo) [1] Comment 2011-03-09 11:45 M w 7.3, Mj 7.3 [2: 32 km [USGS 1] 5- The source was estimated to have a length of 28.7 km and a width of 53.2 km with a slip of 1.25 m. [3] Caused a 55 cm tsunami. [4] 2011-03-10 06:23
The velocity of detonation is an important indicator for overall energy and power of detonation, and in particular for the brisance or shattering effect of an explosive which is due to the detonation pressure. The pressure can be calculated using Chapman-Jouguet theory from the velocity and density.
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PETN is a very powerful explosive material with a relative effectiveness factor of 1.66. [2] When mixed with a plasticizer, PETN forms a plastic explosive. [3] Along with RDX it is the main ingredient of Semtex. PETN is also used as a vasodilator drug to treat certain heart conditions, such as for management of angina. [4] [5]