Engineering
When a 7.8 magnitude earthquake struck southeastern Turkey in the early morning hours of Feb. 6, it was identified as the most powerful seismic incident to hit the country since 1939. When a 7.6 magnitude earthquake was triggered ...
Apr 7, 2023
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Engineering
Another extreme weather event has highlighted the weak points in New Zealand's critical infrastructure. As Cyclone Gabrielle ripped across the North Island, nearly 225,000 people lost power.
Feb 15, 2023
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Engineering
Researchers from Tokyo Metropolitan University have carried out a detailed simulation showing how a common type of bridge fails during large-scale earthquakes. They modeled I-shaped girder bridges, looking at the step-by-step ...
Dec 5, 2022
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Engineering
Caltech Hall, a 55-year-old nine-story reinforced concrete building on the Caltech campus, has been getting structurally stiffer over the past 20 years, according to a new report published in The Seismic Record.
Nov 11, 2022
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Engineering
One natural disaster can knock out electric service to millions. A new study suggests that back-to-back disasters could cause catastrophic damage, but the research also identifies new ways to monitor and maintain power grids.
Oct 21, 2022
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Energy & Green Tech
The operator of the wrecked Fukushima nuclear power plant said Thursday it is further postponing the start of the removal of highly radioactive melted fuel from its damaged reactors because of delays in the development of ...
Aug 25, 2022
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Engineering
Working with research partners from Arup, the UTS team, led by Head of Geotechnical and Transport Engineering Associate Professor Behzad Fatahi with Ph.D. student Ms Noor Sharari, has developed a rigorous computer simulation ...
Jun 2, 2022
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Energy & Green Tech
A Japanese court on Tuesday ordered a utility not to restart a nuclear power plant because of inadequate tsunami safeguards, backing the safety concerns of residents at a time the government is pushing for more reactors to ...
May 31, 2022
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Energy & Green Tech
Japan's nuclear regulator on Wednesday approved plans by the operator of the wrecked Fukushima nuclear plant to release its treated radioactive wastewater into the sea next year, saying the outlined methods are safe and risks ...
May 18, 2022
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Energy & Green Tech
A remote-controlled robot has captured images of what appears to be mounds of nuclear fuel that melted and fell to the bottom of the most damaged reactor at Japan's wrecked Fukushima nuclear plant, officials said Thursday.
Feb 10, 2022
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An earthquake (also known as a tremor or temblor) is the result of a sudden release of energy in the Earth's crust that creates seismic waves. Earthquakes are recorded with a seismometer, also known as a seismograph. The moment magnitude of an earthquake is conventionally reported, or the related and mostly obsolete Richter magnitude, with magnitude 3 or lower earthquakes being mostly imperceptible and magnitude 7 causing serious damage over large areas. Intensity of shaking is measured on the modified Mercalli scale.
At the Earth's surface, earthquakes manifest themselves by shaking and sometimes displacing the ground. When a large earthquake epicenter is located offshore, the seabed sometimes suffers sufficient displacement to cause a tsunami. The shaking in earthquakes can also trigger landslides and occasionally volcanic activity.
In its most generic sense, the word earthquake is used to describe any seismic event — whether a natural phenomenon or an event caused by humans — that generates seismic waves. Earthquakes are caused mostly by rupture of geological faults, but also by volcanic activity, landslides, mine blasts, and nuclear experiments. An earthquake's point of initial rupture is called its focus or hypocenter. The term epicenter refers to the point at ground level directly above the hypocenter.
This text uses material from Wikipedia, licensed under CC BY-SA
