GGR112H5 Lecture Notes - Lecture 17: Ocean Drilling Program, Thermocline, Wave Power
Document Summary
Ggr112 lecture 17 oceans, coastal systems and. Dividied into 3 main zones: mixing zone, thermocline, and deep water (cold zone: mixing zone can be few hundred meters deep, well mixed, efecive heat transfer driven by wave acion. Dissolved gases in the mixing zone oxygen and carbon. Dioxide are inluence by biological acivity, some phytoplankton consume carbon dioxide and produce o2: thermocline steep temperature proile separaing deep ocean waters from the mixing zone. Salinity concentraion of all solutes, usually stable in deep waters but difers at surface and mixing zone. Carbonate compensaion depth (ccd) calcium carbonate rich sediments setling from the ocean surface to the deep ocean readily dissolve below a certain depth due to high acidity. Ocean drilling program (1985-2004: to sample deep ocean sedimentary record and provide the records needed to reconstruct and understand earths recent climate system. Botom waters are much acidic, causing a rise in the ccd.
