UPDATED EXAM QUESTIONS WITH CORRECT
ANSWERS.
2002 Nyiragonga, Democratic Republic of the Congo, Volcano impacts - CORRECT
ANSWERS✔✔Constructive margin, continental rift zone
Basaltic magma
Composite cone volcano (a..k.a. stratovolcano)
VEI = 1
Social Impacts
147 deaths
120,000 made homeless
Economic Impacts
15% of the city of Goa destroyed by lava flows
US $1.2 billion in economic losses
Environmental ImpactsResponse
Major international aid response launched
2004 Indian Ocean Tsunami - CORRECT ANSWERS✔✔About:Magnitude 9.2
24 m tsunami height
Megathrust subduction zone
Social Impacts:
230,000 deaths
125,000 injured
1.7 million people displaced across 15 countriesEconomic Impacts:
$15 billion in economic losses
2010 Canterbury, New Zealand Earthquake impacts - CORRECT ANSWERS✔✔- Social = 100 injuries, No
deaths, A magnitude 6.3 aftershock in Christchurch killed 185 people
,- Economic = $40 million in total losses (including aftershocks), Widespread building damage due to
liquefaction
2010 Eyjafjallajokull, Iceland Volcano impacts - CORRECT ANSWERS✔✔Constructive margin
Mid-ocean ridge
Basaltic magma
Composite cone volcano (stratovolcano)
VEI = 4 (same year and VEI as Merapi)
Social Impacts:
No injuries
No deaths
Economic Impacts:
Major disruption to European and transatlantic air travel affecting 10 million passengersand costing $10
million in economic losses
Environmental Impacts:
Ice melt on the volcano caused some flash flooding
2010 Merapi, Indonesia Volcano impacts - CORRECT ANSWERS✔✔Destructive margine subduction zone
Andesitic magma
Composite cone volcano
VEI = 4
Social Impacts:353 deaths
about 500 injured
350,000 people evacuated before the eruptionEconomic Impacts
:$0.6 billion in losses
Loss of rice harvest due to ash fall
Environmental Impacts:
Some destruction of forests due to pyroclastic flows
, 2010 Talcahuano, Chile Tsunami impacts - CORRECT ANSWERS✔✔Magnitude 8.8
2.6 m tsunami height
Megathrust subduction zone
Overall, the earthquake was more damaging than the accompanying tsunami
Social Impacts
525 deaths
Felt by 80% of the population
Blackout that affected 93% of the population
Economic Impacts
370,000 homes damaged
Economic costs of $15-30 billion to Chile, and $67 million to Japan (fishing in Tôhoku)
2011 Tohoku Japan Tsunami impacts - CORRECT ANSWERS✔✔Magnitude 9.0 (median of Talcahuano
and Indian Ocean)
9.3 m tsunami height
Megathrust subduction zone (all are)
Social impacts
16,000 deaths
6000 injuries
Environmental impacts
$300 billion in economic losses
46,000 buildings destroyed
145,000 buildings damaged
Huge infrastructure damage to ports, water and electricity supply
2015 Gorkha, Nepal Earthquake facts - CORRECT ANSWERS✔✔Magnitude = 7.9 Focal depth = 82 km
Continent-continent collision zone
Social Impacts:
9000 deaths