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The moment magnitude scale (abbreviated as MMS; denoted as MW or M) is used by seismologists to measure the size of earthquakes in terms of the energy released. The magnitude is based on the seismic moment of the earthquake, which is equal to the rigidity of the Earth multiplied by the average amount of slip on the fault and the size of the area that slipped. The scale was developed in the 1970s to succeed the 1930s-era Richter magnitude scale (ML). Even though the formulae are different, the new scale retains a similar continuum of magnitude values to that defined by the older one. Starting in January 2002 the MMS is officially the scale used by the United States Geological Survey to calculate and report magnitudes for all modern large earthquakes.
Popular press reports of earthquake magnitude usually fail to distinguish between magnitude scales, and are often reported as "Richter magnitudes" when the reported magnitude is a Moment magnitude (or a surface-wave or body-wave magnitude). Because the scales are intended to report the same results within their applicable conditions, the confusion is minor.
Magnitude may refer to:
In mathematics:
In astronomy:
www.iris.edu/educate Scientists have developed far-more sensitive seismometers that, with faster computers, have enabled them to record & interpret a broader spectrum of seismic signals than was possible in the 1930's, when the Richter magnitude was developed. The moment magnitude uses seismograms plus what physically occurs during an earthquake (which can also be derived from seismograms), known as the "seismic moment". The seismic moment defines how much force is needed to generate the recorded waves. That information is plugged into the moment magnitude scale to give us the amount of energy that is released during an earthquake. For an interactive magnitude calculator, please visit: http://www.iris.edu/edu/10.5/EQSimulator.html Directed by Robert Butler, University of Portland OR An...
The moment magnitude scale (abbreviated as MMS; denoted as MW or M) is used by seismologists to measure the size of earthquakes in terms of the energy released. The magnitude is based on the seismic moment of the earthquake, which is equal to the rigidity of the Earth multiplied by the average amount of slip on the fault and the size of the area that slipped. The scale was developed in the 1970s to succeed the 1930s-era Richter magnitude scale (ML). Even though the formulae are different, the new scale retains the familiar continuum of magnitude values defined by the older one. The MMS is now the scale used to estimate magnitudes for all modern large earthquakes by the United States Geological Survey. This video is targeted to blind users. Attribution: Article text available under CC-BY...
NASA Sci Files segment explaining how scientists measure the power of earthquakes by using the Richter Scale and the Moment Magnitude Scale.
We've all heard earthquakes described in terms of their magnitude number. But what does this scale really mean? This video illustrates the variation of energy released in easy-to-understand terms.
Eller her: http://www38.zippyshare.com/v/51597445/file.html Andreas Schuller med våre egne Martine A og Oda på koring! MOMENT MAGNITUDE For dere som ikke har fulgt med i geografitimene på skolen så er "Moment Magnitude" en skala som blir brukt for å måle hvor mye energi som frigjøres under et jordskjelv. Denne skalaen går bare til 10, lesninger over det har aldri blitt registrert og vil mest sannsynlig utslette jorden. Derfor kommer vi inn som det 11 nivået i 2011 og lager en vill katastrofe! When we release the energy, are you ready for catastrophy? WE'LL TAKE IT TO THE NEXT LEVEL LYRICS: I can feel the earth shaking under my feet. Something is going down are you feeling the heat yeah Do you hear the sound, do you hear the sound, do you do you, d...
The basics of the logarithmic Richter and Moment Magnitude Scales to measure earthquakes Watch the next lesson: https://www.khanacademy.org/math/algebra2/logarithms-tutorial/natural_logarithm/v/natural-logarithm-with-a-calculator?utm_source=YT&utm;_medium=Desc&utm;_campaign=AlgebraII Missed the previous lesson? https://www.khanacademy.org/math/algebra2/logarithms-tutorial/logarithm_properties/v/logarithmic-scale?utm_source=YT&utm;_medium=Desc&utm;_campaign=AlgebraII Algebra II on Khan Academy: Your studies in algebra 1 have built a solid foundation from which you can explore linear equations, inequalities, and functions. In algebra 2 we build upon that foundation and not only extend our knowledge of algebra 1, but slowly become capable of tackling the BIG questions of the universe. We'll a...
earthquake in Kathmandu in nepal its a natural desaster kills 25000 people buildings are collapse
Please Subscribe to my new channel: https://www.youtube.com/channel/UCkSSsw6mjsaZ_waMC6-G0bw [watch in HD and read the description] Woah! I can't believe, it's finished! Editing this was so fun and I really love the outcome. I actually started this video by simply testing new effects, but as I kept editing I got more and more inspired and after a while I decided I'll make it into a full. It would be a waste to edit only part of it because the song is really awesome!! *0* I've NEVER worked on anything for so long!! And I have the feeling that I improved so much, you can probably notice the difference in styles if you compare before and after 1:50 8D. And...hope you enjoy this video and see ya soon! :3 p.s. Thanks yt for the best thumbnail ever! Edit: June 17, 2014 - Thank you for 100 li...
Italy earthquake of 6.2-magnitude leaves at least 80 dead.The true horror of the Italian earthquake disaster was revealed today as witnesses described the
In this channel , I would try to provides news of the world, Specially Pakistan, India, Afghanistan etc
The USGS has scaled back underground disposal of waste water in a 725 square-mile area in the state
5.3 Magnitude Earthquake Reported Near North Korea Nuclear Site:A "possible explosion" with the power of up to 30,000 tonnes of TNT is suspected to be Pyongyang's fifth nuclear test.
5.4-Magnitude Earthquake Hits South Korea | Live Video : http://inthislink.com/youtube-videos-uploaded/
The Great Hanshin earthquake, or Kobe earthquake, occurred on Tuesday, January 17, 1995 in the southern part of Hyōgo Prefecture, Japan. It measured 6.8 on the moment magnitude scale (USGS), and Mj7.3 on JMA magnitude scale. The tremors lasted for approximately 20 seconds. The focus of the earthquake was located 16 km beneath its epicenter, on the northern end of Awaji Island, 20 km away from the city of Kobe. Approximately 6,434 people lost their lives about 4,600 of them were from Kobe. Among major cities, Kobe, with its population of 1.5 million, was the closest to the epicenter and hit by the strongest tremors. This was Japan's worst earthquake in the 20th century after the Great Kantō earthquake in 1923, which claimed 140,000 lives. It caused approximately ten trillion yen ($100 bill...
At 1:30AM (ASKT), a magnitude 7.1 earthquake rocked South Central Alaska. Here is coverage from KTUU, the NBC affiliate in Anchorage, Alaska. Copyright 2016
Strong earthquake in Delhi, NCR and whole of northern India felt this afternoon. The epicenter is reported to be Afghanistan's Hindu Kush region at a Richter scale of 7.5. Zee News is the highly popular Hindi News channel of India’s largest television network ZMCL. The channel, which has a huge following in India and abroad, has won several prestigious national and international awards. Amongst its popular programs are - Dr. Subhash Chandra Show: https://goo.gl/fCugXC Daily News and Analysis: https://goo.gl/B8eVsD Manthan: https://goo.gl/6q0wUN Fast n Facts: https://goo.gl/kW2MYV Your daily does of entertainment: https://goo.gl/ZNEfhw Sports round up: https://goo.gl/KeeYjf Aapke Sitare: https://goo.gl/X56YSa Bharat Bhagya Vidhata: https://goo.gl/QqJiOV Taal Thok Ke : https://goo.gl/yiV6...
On 11 March 2011, Japan suffered the strongest earthquake in its history (and one of the strongest in world history), which was also its costliest earthquake, and indeed the costliest natural disaster in history. The 2011 Tōhoku earthquake measured 9.0 on the moment magnitude scale and produced a tsunami approximately 10 meters (33 feet) high. Despite the warning systems, thousands were killed by the quake and tsunami. Over 100,000 buildings were damaged with several towns essentially completely destroyed. Hundreds of aftershocks, including some over 7 MW, continued after the first earthquake. As a result of the Fukushima I nuclear accidents that followed the tsunami, attention has been drawn attention to ongoing concerns over Japanese nuclear seismic design standards. Copyright: National...
SNN Late News for Aug 24 2016 At least 21 people are reported to have died in a 6.0 magnitude earthquake which struck central Italy in the early hours of Wednesday morning, while others are still trapped under collapsed buildings. www.snn.bz for more information
According to reports, an earthquake with a magnitude of 7.4 on the Richter scale has hit Nepal, sending tremors across parts of North India and Pakistan. Follow us: YouTube: https://www.youtube.com/user/headlinestoday?sub_confirmation=1 Twitter: https://twitter.com/headlinestoday Facebook: https://www.facebook.com/headlinestoday
20 minutes of devastating video footage coverage of the disaster from CNN-NHK studio in Tokyo, Japan
Ruptly is live from Amatrice following earthquake that struck at around 3:36 am local time (01:36 GMT), and was felt across the central Italy, including in the capital Rome some 126km (76 miles) away from the quake's epicentre, in the town of Norcia. The death toll has now risen to 73, according to an estimate by ANSA news agency, while hundreds of people still remain unaccounted for. The European Mediterranean Seismological Centre measured the magnitude of the earthquake at 6.1 on Richter scale, while The US Geological Survey put it at 6.2. Video on Demand: http://www.ruptly.tv Contact: cd@ruptly.tv Twitter: http://twitter.com/Ruptly Facebook: http://www.facebook.com/Ruptly