Volcanic management

Question 1

Prediction

Answer 1

• Volcanic eruptions tend to follow weeks of seismic activity and other warning signs
• Generally successful

Question 2

Seismographs and seismometers

Answer 2

• Monitor volcanoes

- Warnings of imminent eruptions issued

Question 3

Ground deformation

Answer 3

• Measured using tiltometers and laser-based electronic distance measurement
• Bulging = raising magma

Question 4

Magnetometers

Answer 4

• Upward movement of iron-rich magma

- Changing magnetism within volcano - common indiction of rising magma

Question 5

Hydrological instrumentation

Answer 5

• Rising groundwater temp and gas content