The situation where a sequence of upwellings is followed by downwellings of comparable extent is rarely observed; for example, upwelling-downwelling cycles in a sensitive coastal system are modelled in .
Coastal upwellings and downwellings are generally not periodic phenomena.
The present study of the influence of upwellings and downwellings on water properties in the Gulf of Finland partly relies on the data from the mooring stations near the southern coast of the Gulf in 1995-1996.
The changing wind regime in the coastlines of the Baltic Basin might have caused an alternation of upwellings and downwellings (Fig.
The mechanism supposedly regulating the primary bioproductivity and oxygen content of bottom waters and sediment of the deep shelf was alternation of wind-induced up- and downwellings. Upwelling in the Aeronian brought nutrient-rich and oxygen-depleted waters from the ocean deep to the shelf, generating high primary productivity and anoxic deep shelf environment.
" might drag lithosphere together like soapsuds collecting over an open bathtub drain, forcing the crust to bunch up into mountains and thick plateaus.
Olson sees similar sinking features in his internally heated oil tanks, and other researchers have observed the sheet-like downwellings
in computer models of convection.