seismogram
Earth tremor printout
A seismogram is a visual record produced by a seismograph, showing ground vibrations from earthquakes or other seismic events.
The characteristic zigzag lines trace the intensity and duration of shaking: The seismogram showed a magnitude 6.2 earthquake centered offshore.
Scientists analyze seismograms to determine an earthquake's location, depth, and strength.
Involuntary rhythmic shaking
- aftershockSmaller quake following larger
- epicenterPoint above seismic origin
- magnitudeSize or scale
- RichterSeismological scale eponym
fault · rupture · foreshock · mainshock · hypocenter · quake · intensity · shaking
Longitudinal seismic wave
- S-waveTransverse seismic vibration
- amplitudeMaximum oscillation displacement
- frequencyRate of recurrence
- oscillationRepeated back-and-forth movement
trace · wiggle · deflection · baseline · onset · peak · trough · duration
Interpreting written text
- interpretationAssigned meaning
- waveformGraphed oscillation pattern
- signalMessage-conveying cue
- dataFacts for analysis
plot · graph · chart · picking · locating · triangulation · inversion · modeling
tremor
Involuntary rhythmic shaking
- aftershockSmaller quake following larger
- epicenterPoint above seismic origin
- magnitudeSize or scale
Richter · fault · rupture · foreshock · mainshock · hypocenter · quake · intensity · shaking · displacement
P-wave
Longitudinal seismic wave
- S-waveTransverse seismic vibration
- amplitudeMaximum oscillation displacement
- frequencyRate of recurrence
oscillation · trace · wiggle · deflection · baseline · onset · peak · trough · duration · period
reading
Interpreting written text
- interpretationAssigned meaning
- waveformGraphed oscillation pattern
- signalMessage-conveying cue
data · plot · graph · chart · picking · locating · triangulation · inversion · modeling · software
seismometer
Detects ground vibrations
ink · pen · needle · sensor · accelerometer · geophone · broadband · short-period · digital · analog
tectonics
Study of crustal deformation
- subductionPlate descending beneath another
- lithosphereCrust plus upper mantle
- crustHard outer layer
mantle · volcanic · explosion · induced · natural · depth · distance
- earthquakesearthquake, quake, earthquakes, quakes, epicenter
- diagramsflowchart, cross section, cross-section, schematic, concept map
seismogramseismograph
Earthquake measuring device
seismometer · geophone · accelerometer · sensor · detector