At last for conservations margins, the tension build up when plate are grinding past each other get stuck. Afterwards the plate will finally jerk past each other and sending out shock waves which is vibrations which is earthquakes. They both create lots of impact. For examples for the volcano eruption in Montserrat which is a LEDC, it cause 19
Today, its importance comes more from the wealth of scientific knowledge derived from it than from its sheer size. (USGS) Rupturing the northernmost 296 miles (477 kilometers) of the San Andreas Fault from northwest of San Juan Batiste to the triple junction at Cape Mnemonic. The earthquake confounded contemporary geologists with its large, horizontal displacements and great rupture length. At almost precisely 5:12 a.m., local time, a for shock occurred with sufficient force to be felt widely throughout the San Francisco Bay area. The great earthquake broke loose some 20 to 25 seconds later, with an epicenter near San Francisco.
Tension [pic] d. Compression 6. What is Earth's core composed of? [pic] a. hydrogen and iron b. magnesium and silicon [pic] c. iron and nickel d. nickel and silicon 7. A large ocean wave that is generated by vertical motions of the seafloor during an earthquake is called a(n) __________. a. upwelling current b. seiche [pic] c. tsunami d. tidal range 8.
7. The most recent major eruption of Mount Saint Helens was May 18, 1980. The eruption was so large, the whole north face of the volcano slid away. I can tell it was the north face, because the compass points north and that is where the face slid away. This eruption was an explosive eruption.
Mt. St Hellens On the 18th May, 1980, a huge explosion could be heard across the Cascade Mts, USA as Mt. St Hellens violently erupted. What caused the eruption? Mt.
Trevor Palmer 4/30/14 5th Period 1960 Chilean & Japanese Tsunami Natural disasters can happen at any moment, ranging from the most deadly to just minor natural disaster, but on this day in May of 1960 something happened that will never be forgotten. They say it was the largest earthquake that ever happened off the coast of Chile and because of that a tsunami happened also. According to the Natural Disaster Organization “the earthquake hit at 7:11 pm approximately 100 miles off the coast of Chile”. The shock of the earthquake had a large magnitude of at most 9.5, this goes without saying that there were warnings of this going to happen the day before. The deadly earthquake caused a large amount of damage and death in the country and in the pacific coastal areas.
Before 1980, the last eruption of Mount St. Helens was between 1840 and 1850. The volcano did not happen overnight however, it was caused by multiple earthquakes and lots of pressure buildup through time. The Mount St. Helens volcano eruption was the most recent volcanic eruption that did significant damage in the United States. The formation of Mount St. Helens millions of years ago is the reason why the eruption was so violent. The Juan de Fuca Ridge, which lies between the Pacific and Juan de Fuca plate pushes the two plates in opposite directions causing the Juan de Fuca plate to sub duct underneath the continental plate causing a subduction zone and large pieces of rock are pushed into the opposite plate causing a mountain to form.
Due to high temperatures in the mantle of around 3000 degrees centigrade, this oceanic crusts melts and then rises due to the convection currents in the aesthenosphere . As it joins with trapped seawater and sediment, it melts the overlying continental crust, and the magma plumes rise to the surface. They contain more silica so are more viscous, which plugs up the volcano, meaning pressure build up. This is why these volcanoes are so explosive. Another type of plate boundary are constructive, which is the margin between two diverging plates where new magma
a. Volcano: include the type of lava, where magma is derived, and why this setting produces hazards b. Earthquake: magnitude and amount of displacement or offset 6. Describe the type of hazards in terms of cause, hazard definition, and location (example-tsunami inundation occurred within 1 mile of coastline in low lying areas). 7. Fatalities 8. Damage: 2-3 specific examples of structural damage (earthquakes); areas covered with volcanic debris (volcanic eruption); any other types of damage 9.
Explain why the Philippines and California multiple hazards hotspots are affected by disasters in different ways?? Disaster hotspots are multiple hazard zones such as the Californian Coast and the Philippines. They are places which experience more than one hazard. California is on a conservative plate boundary where two plates (The North American and Pacific) are sliding past each other at different speeds and pressure hence generating frequent shallow focus earthquakes. This includes San Andreas Fault where a network of active faults underlies the LA region and San Francisco Bay Area.