Wilson, D. J. (2011) Investigating Nd and Pb isotopes as paleoceanographic proxies in the Indian Ocean: influences of water mass sourcing and boundary exchange. PhD thesis, Uiniversity of Cambridge.
Restricted to Registered users only
Glacial-interglacial and orbital timescale changes in the water mass sourcing to the deep Indian Ocean are investigated over the period 0-250 ka BP from a neodymium (Nd), lead (Pb) and carbon isotope perspective. Since nutrient regeneration, in addition to water mass mixing, influences carbon isotopes in the deep Indo-Pacific, Nd isotopes, a water mass tracer with an ocean residence time of 500-1000 years, may provide a more conservative proxy for deep water circulation. A comparison of Nd and carbon isotope records may therefore provide evidence on deep ocean nutrient content and carbon storage, while Pb isotopes are investigated as a short residence time tracer (~ 50-200 years) which potentially responds to shorter path length circulation or local inputs.
|Item Type:||Thesis (PhD)|
|Uncontrolled Keywords:||2012AREP; thesis 2012;|
|Subjects:||01 - Climate Change and Earth-Ocean Atmosphere Systems|
|Divisions:||01 - Climate Change and Earth-Ocean Atmosphere Systems|
|Depositing User:||Sarah Humbert|
|Date Deposited:||27 Mar 2012 14:44|
|Last Modified:||23 Jul 2013 10:03|
Actions (login required)