Dissolved Gases in the Ocean Oxygen profile Anoxic environment
Transcription
Dissolved Gases in the Ocean Oxygen profile Anoxic environment
Heat enters ocean-atmosphere in tropics, goes out at poles (Pinet) Major ocean current systems Surface patterns extend as deep as 1000 m Snapshot of ocean temperature – shows lots of eddies… Warm-core ring Cold-core ring Dissolved Gases in the Ocean Oxygen profile Anoxic environment Respiration: Animal, plants and microbial decomposition Dissolved Gases in the Ocean Oxygen profile Thermohaline sources Mediterranean water North Atl Deep Water Pacific Deep water Red Sea Ant. Inter. water Antarctic Bottom Water Mediterranean and Red Sea make Atlantic and Indian Oceans salty And warmer than the Pacific…. Atlantic temp and salinity Atlantic – O2 and water mass types (along western Atlantic) AAIW NADW Pacific (160W) temperature and salinity Pacific O2 and water masses AAIW More sluggish in Indian and Pacific Oceans. Particle flux is cumulative, means older water more nutrient enriched… T-S curve T-S diagram T and S‰ as tracers of water masses • ‘signature’ generally set at surface ocean • T and S‰ are considered conservative properties • Conservative properties: altered only by processes happening at the boundaries of the oceans. Within the ocean interior, see changes ONLY as a result of the mixing of water masses T/S for Atlantic and Indian Oceans