Measuring Hazards

Question 1

What is VEI

Answer 1

Volcanic explosive index and it measures how explosive the eruption is (scale 0-8). This takes in to account plume height, volume, eruption type etc.
Doesn’t look at the impact of the eruption

Question 2

What is seismograph

Answer 2

Pen on paper and measures the shakes. The graph produced will show the intensity (high peaks=high intensity). Also measures fore and after shocks

Question 3

What is the mercalli scale

Answer 3

Subjective scale, based from the amount of damage done from a hazard

Question 4

What is the Richter scale

Answer 4

Measures the magnitude and amount of energy released from earthquakes

Question 5

What was developed due to the inaccuracy of the Richter scale

Answer 5

Moment magnitude scale, looks at the force required to move tithe ground and the distance which was moved. Done through the use of computer models

Question 6

What is the Saffir-Simpson scale

Answer 6

Measures the magnitude of tropical storm events, takes in to consideration wind speed and potential damage. Doesn’t include rainfall