Methods To Monitor Volcanoes Flashcards
1
Q
How is ground deformation measured?
A
Using tiltmetres
2
Q
How do tiltmetres work?
A
Bulging of the ground is caused by rising magma - increasing distance between set points can be measured
3
Q
What do magnetometers measure?
A
Upward movement of iron rich magma
4
Q
What does remote solar powered digital camera surveillance do?
A
Records physical changes in and around the crater - thermal imaging and gas sampling
5
Q
What does hydrological instrumentation measure?
A
Raising groundwater temperature or gas content
