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What are the three reason why the moment magnited scale has gained wide acceptance among seismologists?
Wiki User
∙ 13y ago
1. It is the only magnitude scale that estimates adequately the size of very large earthquakes, it is a measure established from the size of the rupture surface and the amount of displacement, thus it better reflects the total energy released during an earthquake, and it can be verified by two independent methods.
Wiki User
∙ 13y ago
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What do seismologists use that describesthe magnitude of earth?
The moment magnitude scale (MW) provides an estimate of the total energy released in an earthquake and is currently the preferred magnitude scale in use by seismologists .It is calculated from the seismic moment (M0 - which has the unit of dynes/cm =where 1 dyne/cm = 1x10-7 N/m) which is a measure of the total energy released during an earthquake and is derived based on the elastic moduli of the crust where the earthquake occurred, the length of the slip surface and the cross sectional area of the slip surface as follows:M0 = G x AFx DFWhere:G = Shear modulus of the rock massAF = Area of the rupture along the faultDF = average displacement on AFSeismic moment can also be estimated from the amplitude spectra of seismic waves as recorded by a seismometer.In order to make the moment magnitude scale (Mw) consistent with older magnitude scales such as the Local Moment (or "Richter") scale the seismic moment (M0) is converted into a logarithmic scale using the following equation:Mw = 2/3 x log10 x (M0) - 10.7This ultimately yields a dimensionless number and as such, Moment Magnitude has no units.
What is the unit used to measure shock?
The energy released during an earthquake (termed it's strength or more correctly it's magnitude) is measured using the Moment Magnitude scale, the Richter scale is commonly quoted in the press, but is no longer in common usage by seismologists. The intensity (based on the perceived shaking as well as measured ground accelerations from seismometers) is measured or quantified using the Modified Mercalli scale. Neither of these scales have units, however the Moment Magnitude scale value is derived from the seismic moment which has the units of dyne centimetres. See the Related Links below.
The scale that measures the strength of an earthquake based on seismic waves and movement along a fault?
The Moment magnitude scale (used for earthquakes larger than magnitude 7) and Richter scales can both be used to measure earthquake magnitude (the energy released) although seismologists now predominately use the moment magnitude scale.Earthquake intensity is measured using the Modified Mercalli Scale or the European Macroseismic Intensity Scale (essentially a tweaked version of the Moddified Mercalli Scale).The Moment Magnitude Scale is used by seismologists to rate the energy released by earthquakes, replacing the now outdated Richter or Local Magnitude Scale (still commonly used in the media).Earthquake severity is measured using the Modified Mercalli Intensity Scale.Please see the related question.
How can seismologists and other scientist predict earthquakes and protect people fro the damage caused by earthquakes?
They can't at the moment, at least not to the extent they would like. Seismologists want, more than anything, to be able to confidently announce: "There will be an earthquake of between 6.1 and 6.3 Richter occurring in Pleasant Valley within the next 48 hours." That's the ideal. Unfortunately, the technology is a long way from there yet. To paraphrase into the vernacular, the very best earthquake warning system we have at present would be to hear an annoucement that said: "There is somewhere between a pretty good chance and a really good chance there will be an earthquake of undetermined strength in the Pleasant Valley Area anywhere between today and nine months from now".
When was The Anatomy of a Moment created?
The Anatomy of a Moment was created in 2009.
Who invented the moment magnitude scale?
The Moment Magnitude Scale (Mw) was developed by the seismologists Hanks and Kanamori during the 70's and their work was published in the Journal of Geophysical Research in 1979.
What does the moment magnitude scale measure?
the moment magnitude scale rates an earthquake by estimating the total energy released during an earthquake
What does moment magnitude scale measures?
The moment magnitude scale (MW) provides an estimate of the total energy released in an earthquake and is currently the preferred magnitude scale in use by seismologists for measuring large (magnitude greater than 7) earthquakes.
What scale describes an earthquake with a magnitude?
There are a number of earthquake magnitude scales, including the moment magnitude scale (the scale currently favoured by seismologists), the Richter or local magnitude scale and the surface wave magnitude scale.
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The letter was found inside the Letters from School moment. This has since been removed from Pottermore.
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No. It is a sexual orientation that has always existed among humans. However, there is a social trend going on at the moment. The social trend is the acceptance of people for who they are.
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A bit yes, but it has been cold out and eating seems a better expendature of time then exercising at the moment.
What is the moment magnitude scale and how does it work?
The Moment Magnitude Scale (Mw) was developed by the seismologists Hanks and Kanamori during the 70's and their work was published in the Journal of Geophysical Research in 1979 (see the related link).It was developed to enable seismologists to better estimate the magnitude of large earthquakes (those greater than 7) as the Local Magnitude (ML) or Richter scale originally developed in 1935 is not accurate at estimating earthquake magnitudes where the epicentre was greater than 600 km from the seismometer station or where the earthquake magnitude was greater than 7.0.As such, the moment magnitude scale (MW) provides an estimate of the total energy released in an earthquake and is currently the preferred magnitude scale in use by seismologists in large earthquakes.It is calculated from the seismic moment (M0 - which has the unit of dynes/cm =where 1 dyne/cm = 1x10-7 N/m) which is a measure of the total energy released during an earthquake and is derived based on the elastic moduli of the crust where the earthquake occurred, the length of the slip surface and the cross sectional area of the slip surface as follows:M0 =G x AFx DFWhere:G = Shear modulus of the rock massAF = Area of the rupture along the faultDF = average displacement on AFSeismic moment can also be estimated from the amplitude spectra of seismic waves as recorded by a seismometer.In order to make the moment magnitude scale (Mw) consistent with older magnitude scales such as the Local Moment (or "Richter") scale the seismic moment (M0) is converted into a logarithmic scale using the following equation:Mw = 2/3 x log10 x (M0) - 10.7This ultimately yields a dimensionless number and as such, Moment Magnitude has no units.Please see the related links.
What is the effect of death or insanity of the offeror?
Death or insanity of the offeror automatically terminates the offer. This applies even though the offeree is not aware of the death or the insanity of the offeror and communicates an acceptance of the offer. Both parties must be alive and competent to contract at the moment the acceptance is properly communicated to the offeror.
What do seismologists use that describesthe magnitude of earth?
The moment magnitude scale (MW) provides an estimate of the total energy released in an earthquake and is currently the preferred magnitude scale in use by seismologists .It is calculated from the seismic moment (M0 - which has the unit of dynes/cm =where 1 dyne/cm = 1x10-7 N/m) which is a measure of the total energy released during an earthquake and is derived based on the elastic moduli of the crust where the earthquake occurred, the length of the slip surface and the cross sectional area of the slip surface as follows:M0 = G x AFx DFWhere:G = Shear modulus of the rock massAF = Area of the rupture along the faultDF = average displacement on AFSeismic moment can also be estimated from the amplitude spectra of seismic waves as recorded by a seismometer.In order to make the moment magnitude scale (Mw) consistent with older magnitude scales such as the Local Moment (or "Richter") scale the seismic moment (M0) is converted into a logarithmic scale using the following equation:Mw = 2/3 x log10 x (M0) - 10.7This ultimately yields a dimensionless number and as such, Moment Magnitude has no units.
What system do seismologists use today for rating the magnitude of an earthquake?
Earthquake magnitudes are rated using the moment magnitude scale. Moderate and small earthquakes (those with a magnitude below 7) are also measured using the Richter scale. Please see the related question for more information.
Describe the scales that scientists use to measure the magnitude of an earthquake?
The most commonly referred to scale by the press and the public is the Richter scale for measuring earthquake magnitude. However this was actually replaced in the 1970s by the Moment Magnitude scale which is the magnitude scale favoured and in use by seismologists.
