Innovations in Monitoring Ocean History

摘要: Proxy tracers are the tools used to make paleoceanographic and paleoclimatological inferences, they therefore backbone of paleoceanography. Research presented at ICP6 in this volume demonstrate that development new refinement existing ones both highly active research areas. Available proxies fall into three broad categories: biotic, chemical, sedimentological. The chemical largest group can be further broken down for physical properties (temperature), seawater composition, particle flux. Proxies have been developed ice volume, surface bottom water temperature, seasonality, salinity, nutrient concentration, pH pCO2, circulation current patterns, productivity carbon export, sediment origin, local ecology. These proxies, however, not all equally reliable or same stage development. For some targets, such as temperature productivity, multi-proxy studies allow cross-validation results. Other past pCO2 levels, remain more elusive, but systematic experimental observational work is bringing researchers closer goals.