hypocenter
Underground seismic source
The hypocenter is the point of origin of an earthquake beneath the earth's surface, directly below the epicenter.
The term also refers to the point on the ground directly beneath a nuclear or aerial explosion—the spot where the blast's effects are most concentrated: The hypocenter of the Hiroshima bomb is now a memorial park.
Imperfection or blame
- ruptureViolent tearing apart
- magnitudeSize or scale
- P-waveLongitudinal seismic wave
- S-waveTransverse seismic vibration
depth · seismograph · seismometer · seismogram · tremor · aftershock · foreshock · mainshock
Point of explosion origin
- detonationExplosive ignition event
- blastSudden forceful burst
- airburstExplosion in the atmosphere
- falloutPost-blast atmospheric particles
yield · kiloton · megaton · fireball · shockwave · radiation · Hiroshima · Nagasaki
Study of crustal deformation
- lithosphereCrust plus upper mantle
- asthenosphereDuctile upper mantle layer
- crustHard outer layer
- mantleCovering or wrap
rift · stress · strain · rock · bedrock · orogeny · geothermal · strata
Below ground or countercultural
- subterraneanBeneath earth's surface
- subsurfaceBelow the outer layer
- shallowWithout much depth
- deepFar from surface
fault
Imperfection or blame
S-wave · depth · seismograph · seismometer · seismogram · tremor · aftershock · foreshock · mainshock · shockwave
ground-zero
Point of explosion origin
- detonationExplosive ignition event
- blastSudden forceful burst
- airburstExplosion in the atmosphere
fallout · yield · kiloton · megaton · fireball · shockwave · radiation · Hiroshima · Nagasaki · crater
tectonics
Study of crustal deformation
- lithosphereCrust plus upper mantle
- asthenosphereDuctile upper mantle layer
- crustHard outer layer
mantle · rift · stress · strain · rock · bedrock · orogeny · geothermal · strata · isostasy
underground
Below ground or countercultural
- subterraneanBeneath earth's surface
- subsurfaceBelow the outer layer
- shallowWithout much depth
deep · kilometers · buried
- seismologyearthquake, earthquakes, seismograph, seismicity, seismometer
- Atomic Bombingatomic bomb, Hiroshima, Nagasaki, atomic bombing, Little Boy
- Nuclear Testsnuclear test, nuclear explosion, underground test, atmospheric test, weapons test
- seismic activityearthquake, quake, tremor, aftershock, foreshock
- geophysicsearthquake, earthquakes, seismology, seismic waves, seismograph
- faultsfault, flaw, defect, imperfection, shortcoming
concentration, centralize, eccentricity, centrality, centralized, centralization, centric, concentric, decentralize