lecture 7 pt 2

Question 1

6 earthquakes subduction zones can host

Answer 1

1. megathrust
2. forearc
3. intermediate depth
4. deep
5. outer rise normal
6. volcanic seismicity

Question 2

megathrust earthquakes

Answer 2

tohoku japan

• ruptured all the way to the seafloor
• generated a tsunami

Question 3

forearc earthquakes

Answer 3

tend to be moderate, but are shallow and close to Earth which makes them hazardous
- Victoria and Seattle

Question 4

intermediate depth earthquakes

Answer 4

mexico and anchorage

- occur in all subduction zones

Question 5

deep earthquakes

Answer 5

often too deep to cause damage

Question 6

outer rise normal faults

Answer 6

often too far off shore to cause damage

Question 7

volcanic seismicity

Answer 7

rising magma beneath arc volcanoes

- low magnitude that forewarn eruptions

Question 8

3 types that occur at continental plate boundaries

Answer 8

collision zones, rifts and strike slip

Question 9

charaacteristics of continental plate boundaries

Answer 9

spread over wide mountainous regions

• kill more people even though they are smaller due to the location of cities
  ex. Bam, Iran was settled due to the fault taht destroyed it

Question 10

intraplate earthquakes

Answer 10

happen within plates not at boundaries, stress from push and pull

• postglacial rebound
• manmade stress of fracking (Alberta and Oklahoma)