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Related Concept Videos

Magnetostatic Boundary Conditions01:28

Magnetostatic Boundary Conditions

An electric field suffers a discontinuity at a surface charge. Similarly, a magnetic field is discontinuous at a surface current. The perpendicular component of a magnetic field is continuous across the interface of two magnetic mediums. In contrast, its parallel component, perpendicular to the current, is discontinuous by the amount equal to the product of the vacuum permeability and the surface current. Like the scalar potential in electrostatics, the vector potential is also continuous...
Elastic Strain Energy for Shearing Stresses01:20

Elastic Strain Energy for Shearing Stresses

As discussed in previous lessons, strain energy in a material is the energy stored when it is elastically deformed, a concept crucial in materials science and mechanical engineering. This energy results from the internal work done against the cohesive forces within the material. When a material undergoes shearing stress and corresponding shearing strain, the strain energy density, which is the energy stored per unit volume, is calculated. Within the elastic limit, where the stress is...
Measuring Acceleration Due to Gravity01:12

Measuring Acceleration Due to Gravity

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Impact Loading01:19

Impact Loading

Impact loading occurs when a moving object collides with a stationary structure, such as a rod with a uniform cross-sectional area fixed at one end. Under these conditions, the rod absorbs the kinetic energy from the striking object, leading to deformation and subsequent stress development. As the rod returns to its original position and reaches maximum stress, the absorbed energy, initially manifested as kinetic energy, transforms entirely into strain energy.
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Modes of Standing Waves - I01:03

Modes of Standing Waves - I

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Elastic Strain Energy for Normal Stresses

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Related Experiment Video

Updated: Jul 12, 2026

Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling
06:55

Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling

Published on: August 5, 2016

Source parameters for stick-slip and for earthquakes.

T Johnson, F T Wu, C H Scholz

    Science (New York, N.Y.)
    |January 19, 1973
    PubMed
    Summary

    Laboratory stick-slip friction experiments reveal particle and rupture velocities matching earthquake observations. This dynamic similarity strongly suggests stick-slip is the primary mechanism for shallow earthquakes.

    Area of Science:

    • Geophysics
    • Seismology
    • Friction physics

    Background:

    • Earthquakes are complex phenomena, with their underlying physical mechanisms actively researched.
    • Understanding shallow earthquake generation is crucial for seismic hazard assessment.

    Purpose of the Study:

    • To investigate the physical processes governing shallow earthquakes.
    • To determine if laboratory-observed stick-slip friction events mimic earthquake dynamics.

    Main Methods:

    • Laboratory experiments measuring source parameters of stick-slip friction events.
    • Analysis of particle and rupture propagation velocities.
    • Comparison with seismic source theory and earthquake observations.

    Main Results:

    Related Experiment Videos

    Last Updated: Jul 12, 2026

    Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling
    06:55

    Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling

    Published on: August 5, 2016

    • Stick-slip friction events exhibit particle velocities comparable to earthquake particle velocities.
    • Rupture propagation velocities in laboratory experiments align with those observed in earthquakes.
    • Dynamic similarity observed between laboratory stick-slip and natural earthquakes.

    Conclusions:

    • The findings provide strong evidence that stick-slip friction is the dominant mechanism responsible for shallow earthquakes.
    • Laboratory simulations offer valuable insights into the physics of earthquake rupture.
    • Dynamic similarity supports the application of laboratory friction studies to understand seismic events.