Term and Lanform - Madison Public Schools
... other and collide The denser oceanic crust will subduct under the other oceanic crust. Volcanoes and earthquakes are very common Forms an island arc of volcanic islands. Examples on Earth: Japan Aleutian Islands Philippines ...
... other and collide The denser oceanic crust will subduct under the other oceanic crust. Volcanoes and earthquakes are very common Forms an island arc of volcanic islands. Examples on Earth: Japan Aleutian Islands Philippines ...
S waves
... – The inner core and outer core boundary is at a depth of 5,200 km, here P waves increase in speed again (because inner core is solid like the lithosphere) ...
... – The inner core and outer core boundary is at a depth of 5,200 km, here P waves increase in speed again (because inner core is solid like the lithosphere) ...
A Q A G E O G R A P H Y
... majority of earthquakes are related to plate motion and are therefore found around plate boundaries. *Most powerful are related to destructive margins where the descent of the oceanic crust creates frequent shallow to deep focus earthquakes. *Earthquakes at constructive margins are often submarine a ...
... majority of earthquakes are related to plate motion and are therefore found around plate boundaries. *Most powerful are related to destructive margins where the descent of the oceanic crust creates frequent shallow to deep focus earthquakes. *Earthquakes at constructive margins are often submarine a ...
Japan Earthquake and Tsunami
... The USGS PAGER map shows the population exposed to different Modified Mercalli Intensity (MMI) levels. MMI describes the severity of an earthquake in terms of its effect on humans and structures and is a rough measure of the amount of shaking at a given location. Overall, the population in this regi ...
... The USGS PAGER map shows the population exposed to different Modified Mercalli Intensity (MMI) levels. MMI describes the severity of an earthquake in terms of its effect on humans and structures and is a rough measure of the amount of shaking at a given location. Overall, the population in this regi ...
Where plates meet
... A fault is a fracture in a rock. The sections of rock on either side of the fracture move upward, downward or sideways. Large faults can extend as far as several kilometres along the crust. However, some faults are much smaller. Major faults appear near plate boundaries, but smaller ones are found t ...
... A fault is a fracture in a rock. The sections of rock on either side of the fracture move upward, downward or sideways. Large faults can extend as far as several kilometres along the crust. However, some faults are much smaller. Major faults appear near plate boundaries, but smaller ones are found t ...
Page 1
... sea-floor spreading that allows lava or magma up through the cracks. OR when two continental plates move apart (or diverge) creating rift valleys Transform Boundary 9. A plate boundary where two plates slide past one another in opposite directions (or transform) creating earthquakes ...
... sea-floor spreading that allows lava or magma up through the cracks. OR when two continental plates move apart (or diverge) creating rift valleys Transform Boundary 9. A plate boundary where two plates slide past one another in opposite directions (or transform) creating earthquakes ...
Tectonic Plates The theory of plate tectonics has done for geology
... to the rest of California. Since motion along the fault is sideways and not vertical, Los Angeles will not crack off and fall into the ocean as popularly thought, but it will simply creep towards San Francisco at about 6 centimeters per year. In about ten million years, the two cities will be side b ...
... to the rest of California. Since motion along the fault is sideways and not vertical, Los Angeles will not crack off and fall into the ocean as popularly thought, but it will simply creep towards San Francisco at about 6 centimeters per year. In about ten million years, the two cities will be side b ...
File
... – a vibration of the Earth produced by a rapid release of energy. Most often caused by slippage along a ...
... – a vibration of the Earth produced by a rapid release of energy. Most often caused by slippage along a ...
File
... Other volcanoes form in areas where plates are separating. They are less violent because magma escapes with less pressure. The lava contributes to the formation of new soil. ...
... Other volcanoes form in areas where plates are separating. They are less violent because magma escapes with less pressure. The lava contributes to the formation of new soil. ...
1.1 How and why do the Earth`s tectonic plates move? a The Earth`s
... the plates grind together as the oceanic plate subducts into the mantle. The movement of the grinding and friction between the plates is felt on land as an earthquake. The oceanic plate can also become stuck against the continental plate until some of the crust breaks, making the oceanic plate desce ...
... the plates grind together as the oceanic plate subducts into the mantle. The movement of the grinding and friction between the plates is felt on land as an earthquake. The oceanic plate can also become stuck against the continental plate until some of the crust breaks, making the oceanic plate desce ...
1 GEOLOGICAL CONSTRAINTS ON ACTIVE
... where N is the number earthquakes of magnitude M, and a and b are constants. The avalue indicates the background level of seismicity (or activity rate), and the b-value characterises the ratio of small magnitude events to large events. In order to evaluate the a and b-values, the method used here de ...
... where N is the number earthquakes of magnitude M, and a and b are constants. The avalue indicates the background level of seismicity (or activity rate), and the b-value characterises the ratio of small magnitude events to large events. In order to evaluate the a and b-values, the method used here de ...
Document
... ____ 7. A fault is classified by the A. number of earthquakes that occur along it B. type of plate boundary it occurs along C. directions in which rocks move along it D. distance that rocks on either side of the fault move ...
... ____ 7. A fault is classified by the A. number of earthquakes that occur along it B. type of plate boundary it occurs along C. directions in which rocks move along it D. distance that rocks on either side of the fault move ...
Earthquake Notes
... __________________________: a break in the Earth’s Crust (is where an earthquake takes place) _____________________________________: is the energy that is being sent out from the focus ...
... __________________________: a break in the Earth’s Crust (is where an earthquake takes place) _____________________________________: is the energy that is being sent out from the focus ...
Seismicity, crustal structure, and morphology of the Louisville Ridge
... overthrusting Indo-Australian and subducting Pacific plates. We have found in previous studies, for example, that seamounts of the type that make up the Louisville Ridge may act as either a barrier or asperity during large subduction zone earthquakes. Shallow earthquakes for the period 1964-present ...
... overthrusting Indo-Australian and subducting Pacific plates. We have found in previous studies, for example, that seamounts of the type that make up the Louisville Ridge may act as either a barrier or asperity during large subduction zone earthquakes. Shallow earthquakes for the period 1964-present ...
Revision Audit
... Shock waves released by tectonic movement and measured using a seismometer. The generally preferred scale to measure magnitude (energy released at the epicentre). It measures total energy released by an earthquake the moment it occurs. Focus or hypocentre - The point within the ground where the stra ...
... Shock waves released by tectonic movement and measured using a seismometer. The generally preferred scale to measure magnitude (energy released at the epicentre). It measures total energy released by an earthquake the moment it occurs. Focus or hypocentre - The point within the ground where the stra ...
Earthquake in a Box
... Convection current: the movement of the mantle. It brings the hot mantle toward surface, where it moves laterally and then falls when cool. Hot mantle replaces it. This cycle moves the crust. Convergent plate movement: Area where plates are moving toward each other. Divergent plate movement: A ...
... Convection current: the movement of the mantle. It brings the hot mantle toward surface, where it moves laterally and then falls when cool. Hot mantle replaces it. This cycle moves the crust. Convergent plate movement: Area where plates are moving toward each other. Divergent plate movement: A ...
Earthquakes
... – a vibration of the Earth produced by a rapid release of energy. Most often caused by slippage along a ...
... – a vibration of the Earth produced by a rapid release of energy. Most often caused by slippage along a ...
Earthquake magnitude Richter magnitude (Local Magnitude ML
... best known of these is the Richter Magnitude which was defined for local earthquakes in southern California ML = logA + 2.56logD - 1.67 Where A is the measured ground motion (in micrometers) and D is the distance from the event (in km). This is still used for measuring the magnitude of shallow event ...
... best known of these is the Richter Magnitude which was defined for local earthquakes in southern California ML = logA + 2.56logD - 1.67 Where A is the measured ground motion (in micrometers) and D is the distance from the event (in km). This is still used for measuring the magnitude of shallow event ...
Instructions
... Volcano: A volcano is created when an opening, or rupture, in a planet's surface or crus! allows hot rnagma, ash and gases to escape from below the surface much like the picture of the volcano to the righf forming in the ocean, off the island of New Zealand. The ash and lava pile up and can produce ...
... Volcano: A volcano is created when an opening, or rupture, in a planet's surface or crus! allows hot rnagma, ash and gases to escape from below the surface much like the picture of the volcano to the righf forming in the ocean, off the island of New Zealand. The ash and lava pile up and can produce ...
Seismic Waves Activity
... order to support the theory of plate tectonics. The evidence proves that there is a distinct relationship between seismic activity, volcanic activity, and the lithospheric plate boundaries. Seismic Data and Plate Tectonics: The interaction along ___________ boundaries results in an increased frequen ...
... order to support the theory of plate tectonics. The evidence proves that there is a distinct relationship between seismic activity, volcanic activity, and the lithospheric plate boundaries. Seismic Data and Plate Tectonics: The interaction along ___________ boundaries results in an increased frequen ...
Unit Two Part Two Notes
... • Derived from the amount of displacement that occurs along the fault zone • Moment magnitude is the most widely used measurement for earthquakes because it is the only magnitude scale that estimates the energy released by earthquakes. ...
... • Derived from the amount of displacement that occurs along the fault zone • Moment magnitude is the most widely used measurement for earthquakes because it is the only magnitude scale that estimates the energy released by earthquakes. ...
Scientific news n°460 ( PDF , 1051 Ko)
... causes major earthquakes. Glossary GPS:#39'?*9#4'.!$!'"!"2#5;.$&06#*#29'?*9#)'.!$!'"!"2#.;.$&0< Fault: the boundary between two tectonic blocks or plates on which earthquakes occur. ...
... causes major earthquakes. Glossary GPS:#39'?*9#4'.!$!'"!"2#5;.$&06#*#29'?*9#)'.!$!'"!"2#.;.$&0< Fault: the boundary between two tectonic blocks or plates on which earthquakes occur. ...
DQ_SIN_04_17_2006
... Tectonic plates can cause earthquakes as they move. Modern instruments show that about ninety percent of all earthquakes take place along a few lines in several places around the Earth. These lines follow underwater mountains where hot liquid rock flows up from deep inside the planet. Sometimes, the ...
... Tectonic plates can cause earthquakes as they move. Modern instruments show that about ninety percent of all earthquakes take place along a few lines in several places around the Earth. These lines follow underwater mountains where hot liquid rock flows up from deep inside the planet. Sometimes, the ...
Signature of fault zone deformation in nearsurface soil visible in
... along a shallow subsoil layer boundary, indicating synsedimentary faulting. We also recognize a consistent distortion in the moveout of the reflection events in the raw shear wave data. Synthetic modeling of seismic data helps in interpreting these observations and identifying backscattered energy fr ...
... along a shallow subsoil layer boundary, indicating synsedimentary faulting. We also recognize a consistent distortion in the moveout of the reflection events in the raw shear wave data. Synthetic modeling of seismic data helps in interpreting these observations and identifying backscattered energy fr ...
Tsunamis - Laconia School District
... wave devastated nearby areas where the wave may have been as high as 25 meters (80 feet) tall and killed nearly 300,000 people from nations in the region and tourists from around the world. The tsunami wave itself also traveled the globe, and was measured in the Pacific and many other places by tide ...
... wave devastated nearby areas where the wave may have been as high as 25 meters (80 feet) tall and killed nearly 300,000 people from nations in the region and tourists from around the world. The tsunami wave itself also traveled the globe, and was measured in the Pacific and many other places by tide ...
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.