Geochemically tracing the intermediate and surface waters in the Tasman Sea, southwest Pacific

dc.contributor.authorBostock, Helen Cen_US
dc.date.accessioned2008-02-18T04:36:51Zen_US
dc.date.accessioned2011-01-04T02:37:56Z
dc.date.available2008-02-18T04:36:51Zen_US
dc.date.available2011-01-04T02:37:56Z
dc.date.issued2005
dc.description.abstractThe relatively understudied intermediate waters of the world have been implicated as an important part of the global ocean circulation. This thesis discusses the intermediate waters of the Pacific over space and time. Initially, by using geochemical tracers to look at the present distribution, sources and mixing of the water masses. Secondly, by using oxygen and carbon isotopes from sediment cores to study changes in Antarctic Intermediate Waters (AAIW) over the late Quaternary in the north Tasman Sea. ¶ The geochemical tracers highlight the presence of three separate intermediate water masses in the Pacific: North Pacific Intermediate Water (NPIW), AAIW and Equatorial Intermediate Water (EqIW). The EqIW has previously been considered an extension of intermediate water masses to the north or south. The unique geochemical characteristics of EqIW indicate, however, that it cannot be formed by direct mixing of the NPIW and AAIW. Geochemical tracers suggest instead that EqIW must also include mixing with nutrient rich, oxygen deficient, old Pacific Deep Water (PDW). ...en_US
dc.identifier.otherb25317222
dc.identifier.urihttp://hdl.handle.net/1885/46224
dc.language.isoenen_US
dc.rights.uriThe Australian National Universityen_US
dc.subjectSouth Pacific • Tasman Sea • geochemistry • Antarctic Intermediate Water (AAIW) • ocean circulation • palaeoceanography • sedimentology • southern Great Barrier Reef • Glacial • East Australian Current (EAC)en_US
dc.titleGeochemically tracing the intermediate and surface waters in the Tasman Sea, southwest Pacificen_US
dc.typeThesis (PhD)en_US
dcterms.valid2005en_US
local.contributor.affiliationThe Australian National Universityen_US
local.contributor.affiliationFaculty of Science. Department of Earth and Marine Scienceden_US
local.description.refereedyesen_US
local.identifier.doi10.25911/5d7a2a8ad1bdc
local.mintdoimint
local.type.degreeDoctor of Philosophy (PhD)en_US

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