Earth science

Earth science

Any of several geological sciences that are concerned with the earth, its origins, and all of its various structures and physical forms and phenomena.

7Categories 223518Terms

Add a new term

Contributors in Earth science

Become a Contributors

Earth science > Seismology

head waves

Earth science; Seismology

Head waves are observed in a half-space that is in welded contact with another half-space with higher velocity when the seismic source is located in the lower velocity medium. ...

Poisson's ratio

Earth science; Seismology

Gives the absolute value of ratio given by the extension normal to applied compressive stress, divided by the extension parallel to the applied compression.

volcanism

Earth science; Seismology

Geological process which involved the eruption of molten rock.

caustic

Earth science; Seismology

Focusing of a wave where the energy is turning above and reflecting off a discontinuity, respectively - constructively interfering. The amplitude may be large, but not infinite. ...

seismic zonation

Earth science; Seismology

Geographic delineation of areas having different potentials for hazardous effects from future earthquakes. Seismic zonation can be done at any scale - national, regional, local, ...

ground motion

Earth science; Seismology

General term referring to the qualitative or quantitative aspects of movement of the Earth's surface from earthquakes or explosions. Ground motion is produced by waves that are ...