Earthquakes

The death toll from the March 11, 2011 Sendai earthquakes and tsunami continued to climb weeks after the initial destruction due to the amount of damage. The National Police Agency of Japan reported in a September 2012 report with a total of 15,870 deaths, 6,114 injured, and 2,814 people missing. The USGS reports 20,896 fatalities for this disaster. This surpasses the death toll for the 1995 Great Hanshin Earthquake. The largest number of deaths was in the Miyagi, Iwate, and Fukushima districts. Over 92% of...

Earthquakes are tremors or vibrations in the Earth's crust that are caused by the build up or accumulation of pressure (more correctly termed stress). More: The Earth's crust, or lithosphere (hard outer surface) is made up of "tectonic plates", or large plates. There are about 7 major plates and many smaller plates, around 100 km thick, which sit upon a lower soft layer (the asthenosphere). The tectonic plates are always slowly moving, but they get stuck at their edges due to friction. When the...

Convection, as heat from the mantle is transferred to the lower crust, which can move very slowly in response to the increased upward pressure. The heat makes the rock liquid (magma) in some areas, allowing it to flow upward to the surface, thus creating spongebob squarepants! ...

1. Mantle Convection. 2. Ridge Push. 3. Slab Pull. And also; Mantle Plumes and Hot Spot. ...

A brief summary of this long answer can be found by viewing the related question. For more information please read on! This is a complex question and is a subject of continuing ongoing scientific research. A summary of some of the hypothesised causal mechanisms of plate movement (based on scientists current understanding of the process) is given below: The primary source of energy for the motion of the lithospheric plates is dissipation of energy from the earth in the form of heat transfer....

A German spy who was parachuted into England in 1941. He was captured on the second day and executed. ...

Release of pressure of which the plates start to move an push an slide next to each other ...

No. The western portion of California is moving northwest and the eastern portion is moving southeast. They are "slipping" relative to one another along the separation line which is the San Andreas Fault. They are not moving apart, but sliding along the shared edge of the two tectonic plates that meet in California. ...

3.2 on the Richter scale is relatively small quake often not even felt but just recorded by instruments. Alternatively: A 3.2 magnitude star is one that is about 0.052 times as bright as a magnitude 0 star. It is a logarithmic scale. The sun has relative magnitude of -27, the full moon -13, Venus (max) -5, Saturn (max) 0, the naked eye can see light to about 6, 7 x 50 binoculars to about 10, the Hubble space telescope to 32. ...

perhaps because they are lighter. They are able to flex and sway with the surface waves, rather than masonry which has almost no give ...

A natural disaster can not be prevented, but there are things you can do to prepare for a natural disaster such as a earthquake. Although they are still studying the effects of injection, pressure along fault zones can be released by lubricating the fault surface with fluid. The idea is to release the built up stress in the form of many low magnitude events so that a much larger magnitude event is less likely to occur. ...

Yes, that is correct!

Wild animals have evolved to respond to their natural environment, coping with seasonal flooding, wild fires, volcanoes and earthquakes. Most often loss of wildlife in the face of a catastrophic environmental event is a result of changes made to the ecosystem. Habitat fragmentation, in particular, prevents them from responding as they normally would. How Wildlife Responds to Natural Disasters Wild animals are tuned in to their environment (much more than people are). Even domesticated or tamed animals often show a similar flight response in...

No There are two main causes of earthquakes. Firstly, they can be linked to explosive volcanic eruptions; they are in fact very common in areas of volcanic activity where they either proceed or accompany eruptions. Secondly, they can be triggered by Tectonic activity associated with plate margins and faults. The majority of earthquakes world wide are of this type. ...

Plutonic earthquakes-if the earthquake occur deep within the subduction zone of colliding plates. Origin of the initial shock within the earth. ...

Earthquakes cause deaths every year. Since 2000 over 250,000 people were killed in earthquakes world-wide with an average of 62,551 per year. ...

The tectonic factors that create the Caribbean islands and haiti are also what causes them to be at risk. Haiti is at the intersection of the caribbean plate and the North American plate with a sinistral (left lateral) strike slip fault to the west and a convergent subduction boundary to the East. Stresses from this oblique convergence will cause earthquakes along the near surface due to the strike slip fault and deeper plutonic earthquakes due to the subduction zone. Why is there a...

The Great Chilean Earthquake of 1960 The Valdivia earthquake or Great Chilean Earthquake (Spanish: Gran terremoto de Valdivia) of May 22, 1960, is to date the most powerful earthquake ever recorded, rating 9.5 on the Moment Magnitude scale. It occurred in the afternoon (19:11 GMT, 14:11 local time) and its resulting tsunami affected southern Chile, Hawaii, Japan, the Philippines, eastern New Zealand, southeast Australia, and the Aleutian Islands in Alaska. (Please see the Related link.) Answer From Yahoo: The biggest earthquake since 1900 recorded with modern equipment occurred...

Lots of ways. One example is that scientists have shot semantic waves through Earths layers to find out how much velocity each layer has. ...

An earthquake in an unpopulated area would cause little damage- in a major city, a great deal of damage. ...

We cannot feel some earthquakes because they are too deep in the ground. About one million earthquakes occur every year But, we cannot feel them because the rubbing of the rocks was way below the crust. ...

The Richter Magnitude Scale often shortened to Richter scale represents a number to quantify the energy released during an earthquake on a logarithmic scale. Earthquakes with magnitude less than 2.0 are generally not felt by people but only registered by sensitive machines. Earthquakes at the 9.0 and greater range cause severe damage or collapse to all buildings in the area. ...

Because it's known as 'The Pacific ring of fire' simply because volcanoes have erupted around every area included in the ring. This is where the two tectonic plates collide which forces the ground above, up. You wouldn't want to live around a bundle of volcanoes now would you? ...

there are lots but we feel about 5 of them it depends how big the quake adtually is ...

Typically, no. Spring clocks can be affects by the shaking, if it is severe enough. If the clock falls and breaks, then yes, it may stop. If the clock is electric, and the power supply is broken, then yes, the clock will stop. ...