focal mechanism, earthquake

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focal mechanism, earthquake

focal mechanism, earthquake

Temporal correlations of earthquake focal mechanisms

Statistical earthquake focal mechanism forecasts

Likelihood analysis of earthquake focal mechanism distributions

Display and quantitative assessment of distributions of earthquake focal mechanisms

Double-couple earthquake focal mechanism: random rotation and display

A Bayesian approach to determining and parametrizing earthquake focal mechanisms

Focal mechanisms of recent earthquakes in the Southern Korean Peninsula

5Hz GPS seismology of the El Mayor—Cucapah earthquake: estimating the earthquake focal mechanism

Analyses of the stress field in southeastern France from earthquake focal mechanisms

Re-evaluation of focal depths and source mechanisms of selected earthquakes in the Afar depression

A reappraisal of earthquake focal mechanisms and active shortening in the Zagros mountains of Iran

Slab buckling and its effect on the distributions and focal mechanisms of deep-focus earthquakes

Probabilistic joint inversion of waveforms and polarity data for double-couple focal mechanisms of local earthquakes

Focal mechanisms of small earthquakes in the southeastern Brazilian shield: a test of stress models of the South American plate

Inversion of earthquake focal mechanisms to obtain the seismotectonic stress IV—a new method free of choice among nodal planes

Focal mechanisms of large earthquakes in the North Island of New Zealand: slip partitioning at an oblique active margin

Strain partitioning and stress rotation at the North Anatolian fault zone from aftershock focal mechanisms of the 1999 Izmit M w= 7.4 earthquake


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Shallow earthquakes are considered to occur when prolonged tectonic stress exceeds the local yield strength of rocks, so that brittle failure occurs suddenly, with associated earthquake and stress drop. Intermediate and deep earthquakes appear to have variable focal-plane mechanisms, although they are predominantly associated with slip along fracture planes. Other mechanisms include sudden phase transitions, resulting in an implosion as the mineral density increases and its volume decreases. See fault-plane solution.

Subjects: Earth Sciences and Geography.

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