Which process drives abyssal ocean circulation when surface water cools and increases in salinity?

💡 Explanation

When surface water cools and salinity rises, density increases, causing density-driven convection of sinking water because denser water sinks under gravity. Therefore, abyssal ocean circulation results, rather than upwelling, mixing, or expansion, requiring shallower depths or thermal gradients.

• Which mechanism causes rhyolitic magma formation at continental volcanic arcs?
• Which mechanism generates explosive volcanism at subduction zones?
• Which localized outcome commonly occurs due to coastal upwelling?
• Which risk increases when rapid river incision exposes unconsolidated levee sediments during channel migration?
• Which outcome occurs when the descending air in a Hadley cell is significantly drier than average?
• Which atmospheric-driven effect causes enhanced coastal upwelling currents along western continental edges at mid lats?