10-ESCI461-EQPHYSICS
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Transcript of 10-ESCI461-EQPHYSICS
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week 9, 03/18,20week 9, 03/18,20 Earthquakes: Kinematics and PhysicsEarthquakes: Kinematics and Physics slideslide 11
Physics of EarthquakesPhysics of Earthquakes
Equivalent forces of a dislocation modelEquivalent forces of a dislocation model Single forceSingle force
Force coupleForce couple Single coupleSingle couple
Double coupleDouble couple
Moment tensorMoment tensor Double couple componentDouble couple component
NonNon--double couple componentdouble couple component
IsotropicIsotropic
Compensated linear vector dipole (CLVD)Compensated linear vector dipole (CLVD)
Stress drop, Scaling laws, moment magnitude,Stress drop, Scaling laws, moment magnitude,source spectrasource spectra
week 9, 03/18,20week 9, 03/18,20 Earthquakes: Kinematics and PhysicsEarthquakes: Kinematics and Physics slideslide 22
Fault Area and Slip DistributionFault Area and Slip Distribution
week 9, 03/18,20week 9, 03/18,20 Earthquakes: Kinematics and PhysicsEarthquakes: Kinematics and Physics slideslide 33
First Motion PlotFirst Motion Plot
week 9, 03/18,20week 9, 03/18,20 Earthquakes: Kinematics and PhysicsEarthquakes: Kinematics and Physics slideslide 44
How to Represent a Slip of Fault?How to Represent a Slip of Fault?
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week 9, 03/18,20week 9, 03/18,20 Earthquakes: Kinematics and PhysicsEarthquakes: Kinematics and Physics slideslide 55
Force and Force Couple (Dipole)Force and Force Couple (Dipole)
week 9, 03/18,20week 9, 03/18,20 Earthquakes: Kinematics and PhysicsEarthquakes: Kinematics and Physics slideslide 66
Radiation Pattern of Single and Double CoupleRadiation Pattern of Single and Double Couple
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week 9, 03/18,20week 9, 03/18,20 Earthquakes: Kinematics and PhysicsEarthquakes: Kinematics and Physics slideslide 77
Double Couple and Fault SlipDouble Couple and Fault Slip
week 9, 03/18,20week 9, 03/18,20 Earthquakes: Kinematics and PhysicsEarthquakes: Kinematics and Physics slideslide 88
Seismic Moment TensorSeismic Moment Tensor
Scalar moment
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Scalar Moment
week 9, 03/18,20week 9, 03/18,20 Earthquakes: Kinematics and PhysicsEarthquakes: Kinematics and Physics slideslide 99
Examples of Moment Tensor andExamples of Moment Tensor and
the Associated Focal Mechanismthe Associated Focal Mechanism
Isotropic (IIsotropic (I--
component)component)
NonNon-- isotropicisotropic
componentcomponent
Double coupleDouble couple
CompensatedCompensated
Linear VectorLinear Vector
Dipoles (Dipoles (CLVDsCLVDs))
week 9, 03/18,20week 9, 03/18,20 Earthquakes: Kinematics and PhysicsEarthquakes: Kinematics and Physics slideslide 1010
Quantify the CLVDQuantify the CLVD
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week 9, 03/18,20week 9, 03/18,20 Earthquakes: Kinematics and PhysicsEarthquakes: Kinematics and Physics slideslide 1111
Examples of CLVD ObservationsExamples of CLVD Observations
week 9, 03/18,20week 9, 03/18,20 Earthquakes: Kinematics and PhysicsEarthquakes: Kinematics and Physics slideslide 1212
Static Similarity and Scaling LawsStatic Similarity and Scaling Laws
W/L=k1 (constant fault aspect ratio)W/L=k1 (constant fault aspect ratio)
D/L =k2 (constant strain)D/L =k2 (constant strain)
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week 9, 03/18,20week 9, 03/18,20 Earthquakes: Kinematics and PhysicsEarthquakes: Kinematics and Physics slideslide 1313
Stress Drop andStress Drop and MMoo
LFLS
LSL
DSDM
SSDM
SLD
LDLawSimilarityBased
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D
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==
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=
}{
(strain)constant/
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