{"id":{"repo_id":"cape-town","oai_identifier":"oai:open.uct.ac.za:11427/4204"},"canonical_url":"https://search.dev.ndltd.org/etd/cape-town/oai:open.uct.ac.za:11427/4204","repository":{"repo_id":"cape-town","name":"University of Cape Town","base_url":"https://open.uct.ac.za/oai/request"},"display":{"title":"Seasonal variability of sediment oxygen demand and biogeochemistry on the Namibian inner shelf","abstract":"The Central Benguela inner shelf is characterised by hypoxic to anoxic sub-thermocline water conditions on a semi-permanent basis. Historical understanding of the incidence of hypoxia is that the inner shelf area off Namibia is one of the main areas of formation of low oxygen water (LOW) in the Benguela upwelling system. Local biogeochemical remineralization of organic matter mostly related to the primary production in surface waters (Chapman and Shannon, 1985) is thought to drive seasonal variability in sediment oxygen demand. New understanding of the system suggests that shelf hypoxia is driven by a remotely forced equatorial hypoxic boundary condition thought to trigger anaerobic remineralization and increased sediment fluxes of reduced metabolites (Monteiro et al., in press). The study focused on seasonal variability of sediment oxygen demand on the Namibian inner shelf and its relation to particulate organic carbon and reduced metabolite fluxes.","abstract_html":"The Central Benguela inner shelf is characterised by hypoxic to anoxic sub-thermocline water conditions on a semi-permanent basis. Historical understanding of the incidence of hypoxia is that the inner shelf area off Namibia is one of the main areas of formation of low oxygen water (LOW) in the Benguela upwelling system. Local biogeochemical remineralization of organic matter mostly related to the primary production in surface waters (Chapman and Shannon, 1985) is thought to drive seasonal variability in sediment oxygen demand. New understanding of the system suggests that shelf hypoxia is driven by a remotely forced equatorial hypoxic boundary condition thought to trigger anaerobic remineralization and increased sediment fluxes of reduced metabolites (Monteiro et al., in press). The study focused on seasonal variability of sediment oxygen demand on the Namibian inner shelf and its relation to particulate organic carbon and reduced metabolite fluxes.","abstract_has_math":false,"creators":["Joubert, Warren R"],"institution":"Department of Geological Sciences","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["Roychoudhury, Alakendra N","Monteiro, Pedro M S"],"committee_chairs":[],"committee_members":[],"year":2006,"date_issued":"2006","date_published":"2006","updated_at":"2026-07-22T22:23:35Z","subjects":[],"languages":["eng"],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/11427/4204","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Roychoudhury, Alakendra N","Monteiro, Pedro M S"]},{"key":"dc:creator","label":"Author","values":["Joubert, Warren R"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2014-07-30T17:26:25Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2014-07-30T17:26:25Z"]},{"key":"dc:date.issued","label":"Date","values":["2006"]},{"key":"dc:publisher.department","label":"Dc Publisher Department","values":["Department of Geological Sciences"]},{"key":"dc:publisher.institution","label":"Dc Publisher Institution","values":["University of Cape Town"]},{"key":"dc:type","label":"Dc Type","values":["Master Thesis"]},{"key":"dc:type.qualificationlevel","label":"Dc Type Qualificationlevel","values":["Masters"]},{"key":"dc:type.qualificationname","label":"Dc Type Qualificationname","values":["MSc"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["eng"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/11427/4204"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Includes bibliographical references (leaves 82-89)."]},{"key":"dc:description.abstract","label":"Abstract","values":["The Central Benguela inner shelf is characterised by hypoxic to anoxic sub-thermocline water conditions on a semi-permanent basis. Historical understanding of the incidence of hypoxia is that the inner shelf area off Namibia is one of the main areas of formation of low oxygen water (LOW) in the Benguela upwelling system. Local biogeochemical remineralization of organic matter mostly related to the primary production in surface waters (Chapman and Shannon, 1985) is thought to drive seasonal variability in sediment oxygen demand. New understanding of the system suggests that shelf hypoxia is driven by a remotely forced equatorial hypoxic boundary condition thought to trigger anaerobic remineralization and increased sediment fluxes of reduced metabolites (Monteiro et al., in press). The study focused on seasonal variability of sediment oxygen demand on the Namibian inner shelf and its relation to particulate organic carbon and reduced metabolite fluxes."]},{"key":"dc:title","label":"Title","values":["Seasonal variability of sediment oxygen demand and biogeochemistry on the Namibian inner shelf"]}]}],"canonical_facts":{"dc:contributor.advisor":["Roychoudhury, Alakendra N","Monteiro, Pedro M S"],"dc:creator":["Joubert, Warren R"],"dc:date.accessioned":["2014-07-30T17:26:25Z"],"dc:date.available":["2014-07-30T17:26:25Z"],"dc:date.issued":["2006"],"dc:description":["Includes bibliographical references (leaves 82-89)."],"dc:description.abstract":["The Central Benguela inner shelf is characterised by hypoxic to anoxic sub-thermocline water conditions on a semi-permanent basis. Historical understanding of the incidence of hypoxia is that the inner shelf area off Namibia is one of the main areas of formation of low oxygen water (LOW) in the Benguela upwelling system. Local biogeochemical remineralization of organic matter mostly related to the primary production in surface waters (Chapman and Shannon, 1985) is thought to drive seasonal variability in sediment oxygen demand. New understanding of the system suggests that shelf hypoxia is driven by a remotely forced equatorial hypoxic boundary condition thought to trigger anaerobic remineralization and increased sediment fluxes of reduced metabolites (Monteiro et al., in press). The study focused on seasonal variability of sediment oxygen demand on the Namibian inner shelf and its relation to particulate organic carbon and reduced metabolite fluxes."],"dc:identifier.uri":["http://hdl.handle.net/11427/4204"],"dc:language.iso":["eng"],"dc:publisher.department":["Department of Geological Sciences"],"dc:publisher.institution":["University of Cape Town"],"dc:title":["Seasonal variability of sediment oxygen demand and biogeochemistry on the Namibian inner shelf"],"dc:type":["Master Thesis"],"dc:type.qualificationlevel":["Masters"],"dc:type.qualificationname":["MSc"]},"updated_at":"2026-07-22T22:23:35Z"}