seismo-, seism-, -seism, -seisms, -seisma, -seismically, -seismical, -seismal, -seismic +

1. Connecting points on a map at which the intensity of an earthquake-shock is the same.
2. A line connecting points at which the intensity of an earthquake was felt equally or a line on a chart or map connecting points of equal earthquake intensity.

Strong trimmers in the lithospheric part of the earth.

A major earthquake.

A violent earthquake.

Pertaining to the points of maximum disturbance in an earthquake; a curve traced through these points.

An almost imperceptible earth tremor caused by a violent sea storm or an earthquake and detected only by a microseismometer.

Nonrhythmic spasmodic muscular contractions.

The detailed study of landforms across fault zones, analysis of deformed layers of sediment in the walls of trenches excavated across active faults and the determination of the age of carbonaceous material found in the sediments, using radiometric techniques. Specialists have gone back into earthquake history, not in terms of years or decades, but in terms of centuries to arrive at long-term patterns.

1. Relating to or ocurring during the time following an earthquake.
2. Frictional afterslip or deformation following a seismic event.

After a large earthquake, postseismic deformation may result from earthquake-induced slip along the plate interface, commonly referred to as "afterslip", and as viscoelastic relaxation in the volume surrounding the fault rupture. Thus, well-positioned postseismic observations can probe the mechanical properties of subduction megathrusts and the media that surround them.

An instrument for recording the beginning or first trace of an earthquake shock.

The process and instrument for recording the beginning or first trace of an earthquake shock.

Tremors (quakes) caused by volcanic eruptions.

A reference to tremors (quakes) resulting from volcanic eruptions.

1. A sense of shaking or vibration.
2. Tactile perception of vibrations in a liquid or aerial medium.
3. The perception of vibrations; being aware of vibrations or motions.

A reference to earthquakes or surface waves produced with acoustic or sonic energy for geophysical explorations of minerals, oil, etc.