Mohorovicic discontinuity

Mohorovicic discontinuity

The boundary surface or sharp seismic-velocity discontinuity (pronounced Mo-ho-ro-vi-chich) that separates the Earth's crust from the underlying mantle. Named for Andrija Mohorovicic, the Croatian seismologist who first suggested its existence. Under Eastern Canada, it can be found at around 40 km depth.

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Industry/Domain: Earth science
Category: Seismology
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mohorovicic discontinuity

Earth science; Seismology

The boundary surface or sharp seismic-velocity discontinuity (pronounced Mo-ho-ro-vi-chich) that separates the Earth's crust from the underlying mantle. Named for Andrija ...

mohorovicic discontinuity (MOHO)

Geography; Physical geography

After mohorovicic, the junction between the crust and the mantle.

discontinuity

Engineering; Electronic engineering

1. A break in a conductor. 2. A point at which the impedance in a transmission line abruptly changes.

discontinuity

Fire safety; Prevention & protection

A change in the normal, physical structure of a material that can affect its serviceability.

discontinuity

Earth science; Soil science

Any interruption in sedimentation, whatever its cause or length, usually a manifestation of nondeposition and accompanying erosion.

discontinuity

Weather; Meteorology

The abrupt variation or jump of a variable at a line or surface. Discontinuities are said to be of zero order when an undifferentiated quantity is discontinuous, or of first order ...

seismic survey

Earth science; Seismology

A technique for determining the detailed structure of the rocks underlying a particular area by passing acoustic shock waves into the strata and detecting and measuring the ...

shot

Earth science; Seismology

A small explosion used to produce shock waves during a seismic survey.

jug hustler

Earth science; Seismology

A member of a seismic crew who operates the geophones.

seismic exploration

Earth science; Seismology

An exploration technique involving the use of seismic methods.

seismic observer

Earth science; Seismology

A seismic observer operates geophysical recording instruments used in seismic surveys and performs routine maintenance to ensure optimum data quality.

scarp

Earth science; Seismology

A roughly linear, cliff-like slope or face that breaks the continuity of a surface into distinct levels. Scarps are often produced by faulting, especially that which involves a ...

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