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Geophysics

Smaller earthquake which follows a larger one in the same area

Law in rheology

Computational geophysics

Shaking of the surface of the earth caused by a sudden release of energy in the crust

Earthquake forecasting

A branch of seismology concerned with the probabilistic assessment of earthquake seismic hazard

Earthquake prediction

Branch of geophysics, primarily seismology

Earth's internal heat budget

Accounting of the energy flows at and below the planet's crust

Earth's magnetic field

Magnetic field that extends from the Earth’s outer and inner core to where it meets the solar wind

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Fault mechanics

A field of study that investigates the behavior of geologic faults

Focal mechanism

Process that generates seismic waves in an earthquake

Forensic geophysics

Use of geophysics tools in forensic science

Earthquake that occurs before a mainshock but is of lower magnitude

Science of measuring the shape, orientation, and gravity of Earth

Study of dynamics of the Earth

Geomagnetic pole

The poles of a dipole approximation to the Earth's field

Geomagnetic reversal

Reversal of direction of Earth's magnetic field

Mathematical methods for geophysics

Geophysical fluid dynamics

The fluid dynamics of naturally occurring flows, such as lava flows, oceans, and planetary atmospheres, on Earth and other planets

Physics of the Earth and its vicinity

Geothermal gradient

Rate of temperature increase with depth in Earth's interior

Measurement of the strength of a gravitational field

Gravity of Earth

Acceleration that the Earth imparts to objects on or near its surface

State of gravitational equilibrium between Earth's crust and mantle

Type of seismic wave

Magnetic anomaly

Local variation in the Earth's magnetic field

Mantle convection

The slow moving motion of Earth's solid mantle caused by convection currents carrying heat from the planet's interior to its surface

An upwelling of abnormally hot rock within the Earth's mantle

Megathrust earthquake

Type of earthquake at convergent plate boundaries

Moment magnitude scale

Measure of earthquake size, in terms of the energy released

Near-surface geophysics

Geophysics of first tens of meters below surface

North magnetic pole

Wandering point on the Northern Hemisphere

Longitudinal seismic wave

Physical geodesy

The study of the physical properties of the Earth's gravity field

Transverse seismic wave

Seismic intensity scales

Seismic refraction

Deviation of seismic waves by rock or soil layers to characterize subsurface geologic structures

Seismic tomography

Technique for imaging the subsurface of the Earth with seismic waves produced by earthquakes or explosions

Seismic, volcanic, or explosive energy that travels through Earth's layers

Scientific study of earthquakes and propagation of elastic waves through a planet

South magnetic pole

Wandering point on the Earth where the geomagnetic field lines are directed vertically upwards, at 64°S 137°E as of 2015 in the Southern Ocean

Theory of tides

Scientific interpretation of tidal forces

Van Allen radiation belt

Zone of energetic charged particles around the planet Earth