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What does this mean?

Justify the emergency measures based a seismograph reading of 8 on the Richter Scale.

Answer 1

Answer:

The Richter scale[1] – also Richter magnitude Richter magnitude scale, or Richter's magnitude scale – for measuring the strength of earthquakes refers to the original "magnitude scale" (as the author called it) developed by Charles F. Richter and presented in his landmark 1935 paper.[2] This was later revised[how?] and renamed the local magnitude scale, denoted as ML or ML . Because of various shortcomings of the ML  scale most seismological authorities now use other scales, such as the moment magnitude scale (Mw ), to report earthquake magnitudes, but much of the news media still refers to these as "Richter" magnitudes. All magnitude scales retain the logarithmic character of the original and are scaled to have roughly comparable numeric values (typically in the middle of the scale).

Answer 2

Explanation:

A seismograph, or seismometer, is an device used to identify and report earthquakes. Usually, it consists of a block connected to a fixed base. During an shake, the base progress and the block does not. The movement of the field concerning the block is generally converted into an electrical voltage. The electrical voltage is written on document, magnetic tape, or different reporting medium. This report is equivalent to the movement of the seismometer volume relation to the earth, but it can be mathematically transformed to a report of the independent movement of the earth. Seismograph usually leads to the seismometer and its reporting instrument as a single unit.

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