Upwelling

Origin

From - + welling.

Full definition of upwelling

Noun

1. An upward movement from a lower source.
• 2009, Diarmaid MacCulloch, A History of Christianity, Penguin 2010, p. 873:Rather separate from the abolitionist campaign, although likewise led by anglophone Evangelicals, was a sudden upwelling of commitment to worldwide mission.
2. the oceanographic phenomenon that occurs when strong, usually seasonal, winds push water away from the coast, bringing cold, nutrient-rich deep waters up to the surface