Results 221 to 230 of about 14,841 (265)
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2008
In seismology, linear inversion techniques were proposed to determine the moment tensor component in both time and frequency domains (Stump & Johnson 1977) and (Kanamori & Given 1981). Although all components of the moment tensor must be determined, the moment tensor inversion with constraints has been normally applied to obtaining stable solutions in ...
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In seismology, linear inversion techniques were proposed to determine the moment tensor component in both time and frequency domains (Stump & Johnson 1977) and (Kanamori & Given 1981). Although all components of the moment tensor must be determined, the moment tensor inversion with constraints has been normally applied to obtaining stable solutions in ...
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2006
We know that Euler’s first law (5.43) relates the total external applied force on a rigid body to the motion of its center of mass, and in the next chapter we shall demonstrate that Euler’s second law (5.44) relates the total external applied torque to the body’s rotational motion through its moment of momentum vector.
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We know that Euler’s first law (5.43) relates the total external applied force on a rigid body to the motion of its center of mass, and in the next chapter we shall demonstrate that Euler’s second law (5.44) relates the total external applied torque to the body’s rotational motion through its moment of momentum vector.
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Moment tensor migration imaging
Geophysical Prospecting, 2014ABSTRACTWe develop and apply an imaging procedure for simultaneous location and characterization of seismic source properties called Moment Tensor Migration Imaging. The procedure constructs images for moment tensor components using a weighted diffraction stack migration, and combines ray‐theoretical Green's functions with a reverse time moment tensor ...
Kit Chambers +4 more
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1981
Originally introduced as a physically meaningful tool to obtain the excitation coefficients of the normal modes of the earth, the moment tensor has since been appreciated as a concept of more general utility. This paper aims to review this development, and at the same time to obtain simple approximations which are hoped to bridge a gap between abstract
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Originally introduced as a physically meaningful tool to obtain the excitation coefficients of the normal modes of the earth, the moment tensor has since been appreciated as a concept of more general utility. This paper aims to review this development, and at the same time to obtain simple approximations which are hoped to bridge a gap between abstract
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Seismological Research Letters, 2012
Online material: Software source code; examples; sample plots. The graphical representation of a focal mechanism as a plot of the radiation pattern on the focal sphere (sometimes referred to as “beachball diagram”) is well established. It consists of a spherical projection on a unit sphere centered at the source point of a seismic event.
Krieger, L., Heimann, S.
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Online material: Software source code; examples; sample plots. The graphical representation of a focal mechanism as a plot of the radiation pattern on the focal sphere (sometimes referred to as “beachball diagram”) is well established. It consists of a spherical projection on a unit sphere centered at the source point of a seismic event.
Krieger, L., Heimann, S.
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Visualization and multivariate clustering of scattered moment tensors
Information Visualization, 2012Moment tensors are indefinite tensors derived from seismic measurements and encode important information about earthquakes and surface displacement in the earth's mantle. Appropriate analysis of scattered moment tensor fields requires multi-scale visualization to identify related seismic events.
Harald Obermaier +4 more
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The Interpretation of Moment Tensor Inversions
1981The moment tensor formalism provides a concise means of expressing the body force equivalents for a variety of simple point sources; consequently, it is ideally suited for use in the forward problem of generating synthetic seismograms for most sorts of natural and artificial sources.
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Tensor Method for Constructing 3D Moment Invariants
2011A generalization from 2D to 3D of the tensor method for derivation of both affine invariants and rotation, translation and scaling (TRS) invariants is described. The method for generation of the 3D TRS invariants of higher orders is automated and experimentally tested.
Tomás Suk, Jan Flusser
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Relative Moment Tensors Rejuvenated
We here present a recent approach to compute relative moment tensors for clustered seismicity tied to a reference moment tensor. It takes advantage of the similarity in subsurface Green’s functions for closely spaced events, facilitating accurate moment tensor calculations, especially for small earthquakes.Bloch, Wasja +4 more
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