Natural Threats Flashcards
1
Q
3 natural threats
A
Glacial Outburst Floods
Lahars
Avalanches
2
Q
GOF (Jokulhalup)
A
Powerful flood due to sudden discharge of subglacial or ice moraine-dammed lake
3
Q
Lahar
A
Water, mud + rock mixture flow down volcanic slope
4
Q
Avalanche
A
Stress > Strength of mass of snow on a slope
5
Q
2 types of snow pack failure
A
Loose Snow
Slab Avalanche (Cohesive, strong snow)
6
Q
Lahar Example
A
1985
Nevado Del Ruiz, Columbia
23,000 deaths
3-8m deep mudflow
