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Mollie McCann NIAS REGION, INDONESIA Magnitude: 5.3 Location: 0.864°N, 98.838°E Date: Monday, February 7, 2011 Time: 03:07:38 PM at epicenter Depth: 82.8 km (51.5 miles) set by location program Type: Ocean-Continental because it sits on the edge of the land where it meets the water Myanmar, Burma Magnitude: 4.4 Location: 20.007°N, 95.316°E Date: Monday, February 28, 2011 Time: 07:25:04 AM at epicenter Depth: 112.3 km (69.8 miles) Type: continental-continental because it is located in Asia where you can see the white line indicating the continental convergence. Off the coast of Oregon Magnitude: 4.7 Location: Date: Tuesday, February 8, 2011 Time: 10:44:36 PM at epicenter Depth: 10.2 km (6.3 miles) Type: Oceanic Transform because it sits on the fault and is a strike slip earthquake ANDREANOF ISLANDS, ALEUTIAN IS., ALASKA Magnitude: 4.0 Location: 50.163°N, 179.280°W Date: Saturday, February 12, 2011 Time:04:08:09 PM at epicenter Depth: 32.2 km (20.0 miles) Type: Oceanic-Oceanic, it lies in the ocean MARIANA ISLANDS REGION Magnitude: 4.4 Date: Friday, February 11, 2011 Location: 21.572°N, 143.078°E Time: 07:06:04 PM at epicenter Depth: 295 km (183.3 miles) Type: Divergent Volcanoes Name: Sanbe Type: Caldera Plate Boundary: Oceanic-Continental Name: Marsabit Type: Shield Volcano Plate boundary: Oceanic-Continental Name: Isla Tortuga Type: Cinder Cone Plate Boundary: Oceanic-Continental Name: Tarso Voon Type: Composite or Stratovolcano Plate Boundary: Oceanic-Continental Volcanoes and earthquakes are both directly connected to plate tectonics. Many earthquakes and volcanoes are located on or near plate boundaries. To expand on, earthquakes can occur on three different types: convergent, divergent, and transform plate boundaries. The earth’s crust and even the inside of the earth are moving. This movement causes the plates to push against each other or pull away which causes much pressure and results to the different types of faults; or in the case of volcanoes, results in spreading or sinking. When the plates spread or sink it causes melting, that creates molten rock. When this molten rock is beneath earth’s surface it is called magma and it moves around while underneath the crust until eruption. When two tectonic plates collide the denser plate submerges under the continental crust. This causes the production of subduction zones where many of these natural disasters are found. Earthquakes occur along faults, where the crust is weak and can’t withstand the pressure. The spatial relationship between volcanoes and earthquakes is they occur really close to each other. Most of them can be found along plate boundaries such as the Ring of Fire. When using Google Maps you will see many of the dots right in a row of each other. Also, while using Google maps, it has lines of different colors showing you what kind of boundary it lies on. There was so much I have learned from studying earthquakes and volcanoes. One of the biggest things I have learned was how often earthquakes happen and how many volcanoes there are. I honestly had no idea until I used Google Maps and saw all of them. Many of the earthquakes aren’t felt but there are still so many happening. I also was reminded of the different types of faults there are. There is the strike-slip, reverse, and normal fault. I now know that the Wasatch Front is a normal fault. I also learned about the different types of volcanoes and how they erupt differently. This includes how powerful their explosions are which depends on the viscosity and that there are two different types of lava: aa or pahoehoe. I have always considered volcanoes were bad because of the injuries or deaths involved and the property that is destroyed. However, I have learned there is a plus sign to having them because volcanoes are good for agriculture, geothermal hotsprings, and geothermal power potential.