Natural Disasters Revised

Kenny Nielsen
Lauren Parker
Natural Disasters 1700
Earthquakes e-portfolio project
Magnitude: 4.4
Location: 14.569 degrees north 91.938 degrees west
Date: Saturday February 19th 2011
Time: 4:31.17 at epicenter
Depth: 79.4 km (49.3 miles)
Type: Oceanic- continental, because it’s located on oceanic and continental boundaries
Off the coast of the Fiji Islands
Magnitude: 6.4
Location: 26.083 degrees south, 178.439 degrees east.
Date: February 21, 2011
Time: 10:57.53 PM at epicenter
Depth: 561.8 km (349.1 miles)
Type: Oceanic to Oceanic because it is located in the middle of oceanic boundaries.
Gansu, China
Magnitude: 4.6
Location: 34.521 degrees north, 103.782 degrees east.
Date: Wednesday February 23, 2011.
Time: 9:32.13 PM at epicenter
Depth: 10 km (6.2 miles)
Type: Divergent , because is nearest to a rift.
Chipas, Mexico
Magnitude: 4.5
Location: 16.347 degrees North, 91.129 degrees West
Date: Tuesday, March 1, 2011
Time: 6:59:58 at epicenter
Depth: 23.5 km (14.6 miles)
Type: Transform, the plates are moving past each other and rubbing.
Sothern Iran
Magnitude; 4.5
Location: 26.789 degrees north, 57.493 degrees east
Date: Wednesday February 23, 2011
Time: 6:55.59 AM at epicenter
Depth: 24.7 km (15.3 miles)
Type: Continental- continental because southern Iran is along a convergent boundary.
Kenny Nielsen
Lauren Parker
Natural Disasters
Volcanoes e- portfolio project
Name: Alban Hills, Italy.
Type: Stratovolcano/composite
Plate boundary: Subduction zone, covergent boundary.
Name: Oku Volcanic Field, Cameroon
Type: Caldera
Plate Boundary: Seduction zone, covergent boundary.
Name: Andrus, Antarctica
Type: Shield
Plate Boundary: Located near a rift, divergent boundary.
Name: Volcan Azul, Nicaragua
Type: Cinder Cone
Plate Boundary: Subduction zone, Covergent boundary.
1) The correlation between earthquakes and volcanoes with plate tectonics?
The cause of earthquakes and the formation of the volcanoes all have to do with
plate tectonics. When plates move or shift this is what creates and earthquake. Three
main types of movements of the plates are involved, convergent, transform and divergent
boundaries, causing earthquakes on land and in the ocean. The correlation between
volcanoes and earthquakes is heat. The heat from the core of the earth causes convection
which is the driving force to the plates.
When the plates shift this is what creates mountains. Through the process of
volcanism, the process that creates volcanoes, we get a volcano. Once again the heat from
the core heats up molten rock that is below the surface and flows up to the surface and
becomes lava. The correlation between Earthquakes and volcanoes is the heat from the
core causing the plates to shift.
2) The spatial relationship and distribution that exist with these forces of nature?
When earthquakes happen, they spread out the earth or plates and this can cause
volcanoes to appear. For instance, when the oceanic crust dives under continental
crust (subduction) the continental crust is pushed up. This can create mountains, or
volcanoes. These two almost work as a team to create each other. The relationship
between these two always comes back to the shifting of the plates. The heating of the
earth’s core casing both to distribute natural disasters, in their own ways.
3) Describe what you learned about earthquakes and volcanoes that you did not know
before this class…
I always had a basic knowledge about volcanoes and earthquakes, but now my
knowledge is much deeper. I didn’t know that boundary types and plate tectonics
played such a big role in the different types of volcanoes and earthquakes. I guess I
always thought that when the earth got really hot we had a volcano and that when the
earth was shifting we had an earthquake.
Understanding that the heat from the core drives plate tectonics and that
depending on fault lines and the crust that is under the earth, you get a variation of
different results. I learned that there is an upside to these disasters and that it can
create better agricultural, geothermal power, and improve technology. I understand
how we size earthquakes and I can look at readings and know what earthquakes were
more destructive then others. I also learned about the different types of volcanoes and
can pick them out and name them and tell which ones will be more destructive or
likely to go off.
4) How has this helped shift your worldview of natural disasters now that you have a
strong scientific understanding of the concept?
I really have enjoyed learning about this and enjoy reading articles about
volcanoes and recent earthquakes in the paper now, because I understand it better. I
don’t feel like this changed my life drastically and I want to become a natural hazard
scientist, but I defiantly find it a great subject to be educated in. I feel like I will
understand better what to do when these natural hazards happen. I understand a lot
more about how the earth functions and will enjoy telling people about what I have
learned when the subject comes up. I like that I understand how and why volcanoes
and earthquakes happen.