Episodic Tremor and Slip Lab (doc)
... The figure above shows the GPS and seismic signals that are produced by different types of fault behavior along with the where they occur along the megathrust fault. Large, destructive earthquakes tend to occur in the ‘locked’ zone of the fault where the energy from the plate motions is stored elas ...
... The figure above shows the GPS and seismic signals that are produced by different types of fault behavior along with the where they occur along the megathrust fault. Large, destructive earthquakes tend to occur in the ‘locked’ zone of the fault where the energy from the plate motions is stored elas ...
Text from Narration doc
... mantle supports the oceanic ridges that forms Earth’s longest mountain systems. Because temperature increases rapidly with depth at divergent boundaries, there is only a thin layer of brittle rock to fracture in earthquakes. Most earthquakes occur within the upper ten kilometers and have magnitudes ...
... mantle supports the oceanic ridges that forms Earth’s longest mountain systems. Because temperature increases rapidly with depth at divergent boundaries, there is only a thin layer of brittle rock to fracture in earthquakes. Most earthquakes occur within the upper ten kilometers and have magnitudes ...
CHANGING EARTH NOTES
... (cracked and then pushed up) 4. ________________ Mountains (erupting or has erupted in the past) 5. ________________ Mountains (the summit has eroded away) ...
... (cracked and then pushed up) 4. ________________ Mountains (erupting or has erupted in the past) 5. ________________ Mountains (the summit has eroded away) ...
Types of Faults
... Reverse Fault The hanging wall moves up relative to the foot wall. This fault is caused by Compressional stress. ...
... Reverse Fault The hanging wall moves up relative to the foot wall. This fault is caused by Compressional stress. ...
Lecture17
... EXCEEDS ROCK STRENGTH Earthquakes are the result of stress that builds up over time. ...
... EXCEEDS ROCK STRENGTH Earthquakes are the result of stress that builds up over time. ...
plate tectonics notes
... On a separate sheet of paper, list the words below 1 to 13 and define them using your textbook, a dictionary, the Internet, or any other source you choose. Just get it done!!! Once you have defined the words read over each word so that you are able to understand its meaning. I will collect and ...
... On a separate sheet of paper, list the words below 1 to 13 and define them using your textbook, a dictionary, the Internet, or any other source you choose. Just get it done!!! Once you have defined the words read over each word so that you are able to understand its meaning. I will collect and ...
Chapter 8 Study Guide – Earthquakes 1. What is an
... 9. How is the fact that S and P waves travel at different speeds useful in determining the location of an earthquake? 10. Describe the make-up of the inner and outer core. 11. How was this information gathered? 12. At what depth does the outer core begin? At what depth does the inner core begin? 13 ...
... 9. How is the fact that S and P waves travel at different speeds useful in determining the location of an earthquake? 10. Describe the make-up of the inner and outer core. 11. How was this information gathered? 12. At what depth does the outer core begin? At what depth does the inner core begin? 13 ...
Seismic Waves
... shaking decreases with distance from epicenter (star; USGS Shake Map). M6.7, 1994 Northridge, California earthquake ...
... shaking decreases with distance from epicenter (star; USGS Shake Map). M6.7, 1994 Northridge, California earthquake ...
Geography 12
... 3. Explain what it means when the plates are locked. What is the result then? Where the rock surfaces are rough, the plates get stuck on each other. The pressure continues to build up eventually to be released as an earthquake. The longer the pressure builds, the stronger and more destructive the ea ...
... 3. Explain what it means when the plates are locked. What is the result then? Where the rock surfaces are rough, the plates get stuck on each other. The pressure continues to build up eventually to be released as an earthquake. The longer the pressure builds, the stronger and more destructive the ea ...
Text from the animation
... The map of earthquakes greater than magnitude 5 clearly delineate plate boundaries and show deepening earthquakes on the right. The largest, magnitude 7 and 8, cluster especially beneath the New Hebrides subduction zone reflecting the locked and loaded contact. We’ll look more closely at three areas ...
... The map of earthquakes greater than magnitude 5 clearly delineate plate boundaries and show deepening earthquakes on the right. The largest, magnitude 7 and 8, cluster especially beneath the New Hebrides subduction zone reflecting the locked and loaded contact. We’ll look more closely at three areas ...
Chapter 16 - Heritage Collegiate
... shallow focus earthquakes. These usually cause the most damage. ii. Those that occur between 70km and 300km under the surface are called intermediate focus earthquakes. iii. Those that occur more than 300km under the surface are called deep focus earthquakes. It was discovered that in subduction zon ...
... shallow focus earthquakes. These usually cause the most damage. ii. Those that occur between 70km and 300km under the surface are called intermediate focus earthquakes. iii. Those that occur more than 300km under the surface are called deep focus earthquakes. It was discovered that in subduction zon ...
Classroom Teacher Preparation Earth Science 15: Seismic Waves
... Crust – The solid outermost layer of the earth Mantle – The portion of the earth between the crust and the core; it makes up about 45% of the earth’s interior o Note that the uppermost part of the mantle is solid and is considered part of the lithosphere Core – The innermost layers of the earth; it ...
... Crust – The solid outermost layer of the earth Mantle – The portion of the earth between the crust and the core; it makes up about 45% of the earth’s interior o Note that the uppermost part of the mantle is solid and is considered part of the lithosphere Core – The innermost layers of the earth; it ...
Chapter 5
... A shaking and trembling that results from the sudden movement of part of the Earth’s crust. Similar to ripples from a pebble in a pond Usually occur along a fault More than 1 million per year on the planet Entire fault doesn’t all move at the same time. Energy is released at different places at anyo ...
... A shaking and trembling that results from the sudden movement of part of the Earth’s crust. Similar to ripples from a pebble in a pond Usually occur along a fault More than 1 million per year on the planet Entire fault doesn’t all move at the same time. Energy is released at different places at anyo ...
Introductory Presentation on Earthquakes
... • Earth’s crust acts in the same way. As the earth’s plates move side to side, up and down and also interact head on, they put forces on themselves and each other breaking the crust. • When this break occurs, the stress is released as energy which moves through the Earth in the form of waves, which ...
... • Earth’s crust acts in the same way. As the earth’s plates move side to side, up and down and also interact head on, they put forces on themselves and each other breaking the crust. • When this break occurs, the stress is released as energy which moves through the Earth in the form of waves, which ...
seismic waves notes - Fort Thomas Independent Schools
... (3) a shear stress (moving past) (4) torsion stress (twisting) ...
... (3) a shear stress (moving past) (4) torsion stress (twisting) ...
Word format
... 26. How many people have been killed by earthquakes in the past 4,000 years? A. 15,000 B. 130,000 C. 270,000 D. 2.7 million E. 13 million 27. Which of the following is not a major influence on the cause of earthquakes? A. friction B. elastic energy buildup C. ductile deformation D. tectonic stresses ...
... 26. How many people have been killed by earthquakes in the past 4,000 years? A. 15,000 B. 130,000 C. 270,000 D. 2.7 million E. 13 million 27. Which of the following is not a major influence on the cause of earthquakes? A. friction B. elastic energy buildup C. ductile deformation D. tectonic stresses ...
EXAM 3
... 26. How many people have been killed by earthquakes in the past 4,000 years? A. 15,000 B. 130,000 C. 270,000 D. 2.7 million E. 13 million 27. Which of the following is not a major influence on the cause of earthquakes? A. friction B. elastic energy buildup C. ductile deformation ...
... 26. How many people have been killed by earthquakes in the past 4,000 years? A. 15,000 B. 130,000 C. 270,000 D. 2.7 million E. 13 million 27. Which of the following is not a major influence on the cause of earthquakes? A. friction B. elastic energy buildup C. ductile deformation ...
Plate Tectonics PowerPoint
... here because this is where a transform boundary is and earthquakes and other natural disasters can occur here. Landslides and mudslides may rarely occur due to shaking from powerful earthquakes. We may also need to worry about our future. In 1811 one of the strongest earthquakes in history occurred ...
... here because this is where a transform boundary is and earthquakes and other natural disasters can occur here. Landslides and mudslides may rarely occur due to shaking from powerful earthquakes. We may also need to worry about our future. In 1811 one of the strongest earthquakes in history occurred ...
seismotectonic manifestations in the sou theastern chersky range
... rockfall with a volume of about 200-300 million cubic meters (Tirekhtyakh dislocation) in the Ulakhan-Chistay Range which formed a 360 m high dam that dammed in the valley of the 10 km long Yuryn-Tas Creek (tributary of Tirekhtyakh river in the Moma river basin). Water from the dammed up basin penet ...
... rockfall with a volume of about 200-300 million cubic meters (Tirekhtyakh dislocation) in the Ulakhan-Chistay Range which formed a 360 m high dam that dammed in the valley of the 10 km long Yuryn-Tas Creek (tributary of Tirekhtyakh river in the Moma river basin). Water from the dammed up basin penet ...
How frequent are earthquakes?
... A question always asked by members of the public (and reporters) to seismologists is can you predict earthquakes, and if you cannot then what is the point of seismology. Once you have a basic understanding of plate tectonics and the fundamental causes for earthquakes it becomes obvious that they are ...
... A question always asked by members of the public (and reporters) to seismologists is can you predict earthquakes, and if you cannot then what is the point of seismology. Once you have a basic understanding of plate tectonics and the fundamental causes for earthquakes it becomes obvious that they are ...
Sendai Earthquake
... 0-70 km deep = shallow; 70-300 km deep = intermediate; >300 km deep = deep. Spreading ridge EQ are always shallow and focal mechanisms indicate extension; similar EQ for continental rifts. Transform EQ are shallow and generally have strike-slip mechanisms, but sometimes show compression or extension ...
... 0-70 km deep = shallow; 70-300 km deep = intermediate; >300 km deep = deep. Spreading ridge EQ are always shallow and focal mechanisms indicate extension; similar EQ for continental rifts. Transform EQ are shallow and generally have strike-slip mechanisms, but sometimes show compression or extension ...
EGU06-A-10085 - Copernicus Meetings
... Central Alborz is the convergence point of the eastern and the western parts of the Alborz Mountains where great earthquakes have made a lot of fatalities. The central Alborz faults, especially around Tehran, are from mountain bordering type building heights and troughs that are mostly compressive o ...
... Central Alborz is the convergence point of the eastern and the western parts of the Alborz Mountains where great earthquakes have made a lot of fatalities. The central Alborz faults, especially around Tehran, are from mountain bordering type building heights and troughs that are mostly compressive o ...
Earthquake
An earthquake (also known as a quake, tremor or temblor) is the perceptible shaking of the surface of the Earth, which can be violent enough to destroy major buildings and kill thousands of people. The severity of the shaking can range from barely felt to violent enough to toss people around. Earthquakes have destroyed whole cities. They result from the sudden release of energy in the Earth's crust that creates seismic waves. The seismicity, seismism or seismic activity of an area refers to the frequency, type and size of earthquakes experienced over a period of time.Earthquakes are measured using observations from seismometers. The moment magnitude is the most common scale on which earthquakes larger than approximately 5 are reported for the entire globe. The more numerous earthquakes smaller than magnitude 5 reported by national seismological observatories are measured mostly on the local magnitude scale, also referred to as the Richter magnitude scale. These two scales are numerically similar over their range of validity. Magnitude 3 or lower earthquakes are mostly almost imperceptible or weak and magnitude 7 and over potentially cause serious damage over larger areas, depending on their depth. The largest earthquakes in historic times have been of magnitude slightly over 9, although there is no limit to the possible magnitude. The most recent large earthquake of magnitude 9.0 or larger was a 9.0 magnitude earthquake in Japan in 2011 (as of March 2014), and it was the largest Japanese earthquake since records began. Intensity of shaking is measured on the modified Mercalli scale. The shallower an earthquake, the more damage to structures it causes, all else being equal.At the Earth's surface, earthquakes manifest themselves by shaking and sometimes displacement of the ground. When the epicenter of a large earthquake is located offshore, the seabed may be displaced sufficiently to cause a tsunami. Earthquakes can also trigger landslides, and occasionally volcanic activity.In its most general sense, the word earthquake is used to describe any seismic event — whether natural or caused by humans — that generates seismic waves. Earthquakes are caused mostly by rupture of geological faults, but also by other events such as volcanic activity, landslides, mine blasts, and nuclear tests. An earthquake's point of initial rupture is called its focus or hypocenter. The epicenter is the point at ground level directly above the hypocenter.