TECTONICS

Question 1

Intra-plate processes

Answer 1

FAULTS: smaller magnitude EQ’s where ancient faults are located
COLLISION: plates can crumple and crack
HOT SPOTS: occur where there is upwelling

Question 2

Why are EQ’s are distributed globally?

Answer 2

Because in any plate movement direction or tension forces can build up and release.

•tsunamis=less sparsely than EQ’s. they require a boundary both destructive and only with big enough magnitude

Question 3

Plate boundaries

Answer 3

DESTRUCTIVE= most intense EQ’s occur here
TRANSFORM=conservativ plate boundaries create large EQ’s due to stress buildup —> San Andreas
CONSTRUCTIVE=friction generated is far lower than at boundaries, EQ magnitude reflects this

Question 4

Geophysical + Hydro meteorological effects

Answer 4

Pyroclastic flow + monsoon rainfall = lahars
•Ash/Tephra + monsoon rains = collapse roofs
•High winds + any event = difficult search and rescue

Question 5

Hazard management cycle

Answer 5

1- short term + emergency responses
2- medium term response following assessment of damage
3- long term reconstruction of infrastructure
4- prevention measure considers including land use planning
5- preparing for a future event through risk assessment + planning