Broadband Earthquake Monitoring at OAUIFE Station, Nigeria
... fault that resulted into the tremor rupture at about 10 km within the upper crust • with a stress drop of about 0.265 bar and a 3.07 km radius rupture. Considering the areas where the tremor was felt, • the rupture process propagated up to north-east and down to south-west. The majority of the fault ...
... fault that resulted into the tremor rupture at about 10 km within the upper crust • with a stress drop of about 0.265 bar and a 3.07 km radius rupture. Considering the areas where the tremor was felt, • the rupture process propagated up to north-east and down to south-west. The majority of the fault ...
Chapter 9 Lesson 3 Page 352 and 353 Earth`s Structure
... 7. What is an earthquake? _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ 8. What is the difference between the focus and the epicenter? _____________ ...
... 7. What is an earthquake? _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ 8. What is the difference between the focus and the epicenter? _____________ ...
What are Earthquakes?
... ground is called a focus, or hypocenter. • The area directly above the hypocenter on land is called the epicenter. • Earthquakes are strongest at the epicenter and become gradually weaker farther away! ...
... ground is called a focus, or hypocenter. • The area directly above the hypocenter on land is called the epicenter. • Earthquakes are strongest at the epicenter and become gradually weaker farther away! ...
Earth Science Chapter 5: Earthquakes Lecture Notes
... the forces of plate motion push or pull the crust so much that the crust breaks. There are three main types of faults: normal faults, reverse faults, and strike-slip faults. Tension causes a normal fault. In a normal fault, the fault is at an angle, and one block of rock lies above the fault while t ...
... the forces of plate motion push or pull the crust so much that the crust breaks. There are three main types of faults: normal faults, reverse faults, and strike-slip faults. Tension causes a normal fault. In a normal fault, the fault is at an angle, and one block of rock lies above the fault while t ...
Chapter 5
... types of stress act on rock layers – Tension pulls on the crust –Compression squeezes rock –Shearing pushes a mass of rock in two ...
... types of stress act on rock layers – Tension pulls on the crust –Compression squeezes rock –Shearing pushes a mass of rock in two ...
File
... Questions to Answer • How does the movement of tectonic plates affect the Earth’s surface? • How does the transfer of energy relate to earthquakes and ...
... Questions to Answer • How does the movement of tectonic plates affect the Earth’s surface? • How does the transfer of energy relate to earthquakes and ...
Earth`s History Test Review
... between two tectonic plates. The boundary between these two plates is BEST described as a: ...
... between two tectonic plates. The boundary between these two plates is BEST described as a: ...
8.3 Destruction from EQ 8.4
... moved vertically along a fault. Earth’s interior consists of three major zones defined by their chemical ...
... moved vertically along a fault. Earth’s interior consists of three major zones defined by their chemical ...
Plate Tectonics
... transmitted through rock as vibrations called seismic waves. • Hypocenter (focus) – point where earthquake is generated. –Usually depths less than 100 km. ...
... transmitted through rock as vibrations called seismic waves. • Hypocenter (focus) – point where earthquake is generated. –Usually depths less than 100 km. ...
Dynamic Notes
... The Richter magnitude scale (often shortened to Richter scale) is the most common standard of measurement for earthquakes. It was invented in 1935 by Charles F. Richter of the California Institute of Technology as a mathematical device to compare the size of earthquakes. The Richter scale is used t ...
... The Richter magnitude scale (often shortened to Richter scale) is the most common standard of measurement for earthquakes. It was invented in 1935 by Charles F. Richter of the California Institute of Technology as a mathematical device to compare the size of earthquakes. The Richter scale is used t ...
S Ch 4 Earthquakes and Volcanoes NOTES
... detects an earthquake. The earthquake didn’t happen where you are- you can’t even feel it. As a result, you don’t know what distance or direction the earthquake happened. The P-wave and S-wave are separated by 4:05 (4 minutes, 5 seconds). You need to find a spot on the graph where the P-line and the ...
... detects an earthquake. The earthquake didn’t happen where you are- you can’t even feel it. As a result, you don’t know what distance or direction the earthquake happened. The P-wave and S-wave are separated by 4:05 (4 minutes, 5 seconds). You need to find a spot on the graph where the P-line and the ...
California`s Natural Hazards
... Scientists have evidence that in the past 200 years, more than a dozen locally generated tsunamis have struck California coastlines. ...
... Scientists have evidence that in the past 200 years, more than a dozen locally generated tsunamis have struck California coastlines. ...
Summer term - Restless Earth SOL
... Explain how volcanic eruptions can often be predicted but earthquakes ...
... Explain how volcanic eruptions can often be predicted but earthquakes ...
Glossary for Plate tectonics and associated hazards
... Benioff zone Bomb Caldera Collision zone ...
... Benioff zone Bomb Caldera Collision zone ...
Exam #2: study guide
... Chapter 8: Questions 1-20, 22 and associated pages in the book. We will cover hazards after the exam. What is an earthquake Elastic Rebound theory Foreshocks and aftershocks Seismology: Seismogram; P and S wave arrival times; The types of waves and how they move Locating an earthquake Me ...
... Chapter 8: Questions 1-20, 22 and associated pages in the book. We will cover hazards after the exam. What is an earthquake Elastic Rebound theory Foreshocks and aftershocks Seismology: Seismogram; P and S wave arrival times; The types of waves and how they move Locating an earthquake Me ...
Plate Tectonics Unit Assessment Study Guide Answers
... Most fossils form when living things die and their remains are buried by sediment. Fossils are important because they provide a record of: life on Earth how organisms have changed over time how organisms responded to environmental changes over time ...
... Most fossils form when living things die and their remains are buried by sediment. Fossils are important because they provide a record of: life on Earth how organisms have changed over time how organisms responded to environmental changes over time ...
Background note on induced seismicity in the
... between “Geological England” and “Geological Scotland”, is mostly rather weak and can rarely store sufficient energy for large seismic events; we consider a tectonic event with a magnitude 6 a VERY significant event here in the UK for our own domestic purposes, but these are minnows compared with ea ...
... between “Geological England” and “Geological Scotland”, is mostly rather weak and can rarely store sufficient energy for large seismic events; we consider a tectonic event with a magnitude 6 a VERY significant event here in the UK for our own domestic purposes, but these are minnows compared with ea ...
Tectonic Landscapes Revision
... Repeated eruptions of lava will build ocean floor ridges (Mid-Atlantic Ridge) If enough lava builds to reach sea level, this will form volcanic islands (Iceland) ...
... Repeated eruptions of lava will build ocean floor ridges (Mid-Atlantic Ridge) If enough lava builds to reach sea level, this will form volcanic islands (Iceland) ...
2.4c
... Candidates should know that plotting the epicentres of major earthquakes and the sites of active volcanoes indicates the location of plate boundaries – regions where the edges of different plates are in contact. Plates move apart at a mid ocean ridge; this is called a constructive plate boundary bec ...
... Candidates should know that plotting the epicentres of major earthquakes and the sites of active volcanoes indicates the location of plate boundaries – regions where the edges of different plates are in contact. Plates move apart at a mid ocean ridge; this is called a constructive plate boundary bec ...
Magnitude 8 Peru Earthquake of August 15, 2007
... historic earthquake activity near the epicenter (star) from 1990 to present. Earthquakes are shallow at the Peru - Chile Trench and increase to > 300 km depth (blue dots) towards the east as the Nazca Plate dives deeper beneath the South American Plate. The epicenter of this M8.8 great earthquake is ...
... historic earthquake activity near the epicenter (star) from 1990 to present. Earthquakes are shallow at the Peru - Chile Trench and increase to > 300 km depth (blue dots) towards the east as the Nazca Plate dives deeper beneath the South American Plate. The epicenter of this M8.8 great earthquake is ...
AIM: Introduce you to scientific study of the world's
... –Usually about 250 km thick; it occurs between 60 & 350 km below surface –Absent beneath some continental regions –Ductility may result from partial melting; compare geothermal gradient against solidus temperature ...
... –Usually about 250 km thick; it occurs between 60 & 350 km below surface –Absent beneath some continental regions –Ductility may result from partial melting; compare geothermal gradient against solidus temperature ...
Name _____ Hour ______ Score Plate Tectonics Unit Objectives
... Identify the different layers of the Earth and their compositions Describe important milestones in geologic time eras Describe the movement of the Earth’s plates over geologic time Explain Alfred Wegener’s continental drift hypothesis and why it was not accepted in his time Explain the the ...
... Identify the different layers of the Earth and their compositions Describe important milestones in geologic time eras Describe the movement of the Earth’s plates over geologic time Explain Alfred Wegener’s continental drift hypothesis and why it was not accepted in his time Explain the the ...
Introduction to Earthquakes and Seismology
... Process: crustal rocks are placed under force or stress, the rocks undergo elastic deformation until frictional/atomic forces within the rock are exceeded, and slippage or rupture along a fault occurs. a. ...
... Process: crustal rocks are placed under force or stress, the rocks undergo elastic deformation until frictional/atomic forces within the rock are exceeded, and slippage or rupture along a fault occurs. a. ...
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.