diastrophism; crustal movement
Geological term for deformation and movement of the earth's crust. Used in scientific and news contexts.
Mountain ranges were formed by crustal movement.
seismic shift; upheaval; earthshaking change
Figurative extension: dramatic, fundamental change in politics, society, or an organization, likened to a geological shift.
選挙結果は政界に地殻変動をもたらした。
The election results brought about a seismic shift in the political world.
Crustal movement has been occurring in this region for many years.
A seismic shift occurred in the political world, giving rise to a new party.
Researchers are using satellites to observe crustal movement.
The emergence of new technology brought a seismic shift to the industry.
異変 refers to an unusual or alarming occurrence, while 地殻変動 (figurative sense) emphasizes a fundamental realignment of power or structure.