FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2079563792> ?p ?o ?g. }

• W2079563792 endingPage "254" @default.
• W2079563792 startingPage "235" @default.
• W2079563792 abstract "Time series analyses (from ∼ 18.7 to 5.8 Ma) of the oxygen isotopic composition of four shallow-dwelling planktic foraminifera (Globorotalia mayeri, Dentoglobigerina altispira, Globoquadrina baroemoenensis andGlobigerinoides immaturus), one deep-dwelling planktic foraminifer (Globoquadrina venezuelana) and a benthic foraminifer (Cibicidoides spp.) from Deep Sea Drilling Project Site 289 (2206 m present day depth) are used to determine the evolution of vertical thermal structure in the western equatorial Pacific. Comparisons of composite oxygen isotopic curves, representing the surface mixed-layer, the thermocline, and deep waters reveal three distinct intervals of stability in the position and strength of the thermocline during the Miocene (∼ 18.7 to 16.1 Ma; ∼ 11.1 to 9.9 Ma; and ∼ 7.5 to 5.8 Ma) separated by two intervals of instability of the thermocline (∼ 16.1 to 11.1 Ma; and ∼ 9.9 to 7.5 Ma). From ∼ 18.7 to 16.1 Ma, vertical thermal gradients were the weakest of the Miocene interval studied and the water column was highly stable. Vertical thermal gradients strengthened between ∼ 16.1 and 11.1 Ma as equatorial surface waters warmed and deep waters cooled during an inferred major growth phase of the East Antarctic ice sheet. As a consequence, the strength and position of the thermocline became highly variable. This was followed, from ∼ 11.1 to 9.9 Ma, by relative climatic stability, well-defined vertical thermal gradients and a slight warming of the water column. By ∼ 9.9 Ma, increasing restriction of surface water flow through the Indonesian Seaway led to the piling-up of warm surface waters in the western equatorial Pacific and a deepening of the thermocline. Deep waters continued to cool and vertical thermal gradients reached a Miocene maximum by ∼ 7.5 Ma. From ∼ 7.5 to 5.8 Ma, vertical thermal gradients were stable and the water column became highly stratified and marked by a thick, warm surface layer and a deep, well-defined thermocline. Based upon a previous assumption that ice volume growth during the middle Miocene (∼ 16.1 to 11.1 Ma) contributed to an increase inδ18O values of 0.5 to 0.7‰ we have estimated water column temperature changes at Site 289 between ∼ 18.7 and 5.8 Ma. Surface waters are inferred to have warmed 2° to 4°C between ∼ 18.7 and 5.8 Ma, with about half of the warming occurring from ∼ 16.1 to 11.1 Ma. Between ∼ 11.1 and 9.9 Ma the entire water column warmed and from ∼ 9.9 to 7.5 Ma the mixed-layer expanded and the thermocline deepened as warm waters piled-up in the western equatorial Pacific in response to the closure of the Indonesian Seaway. The net decrease of thermoclinalδ18O values between ∼ 11.1 and 7.5 Ma reflects an upward change in position of the deep-dwelling planktic foraminifera,Globoquadrina venezuelana, relative to the position of the thermocline as the thermocline deepened. After 7.5 Ma, relativeδ18O values indicate thatGloboquadrina venezuelana was a deep-dwelling, mixed-layer species. Deep waters (∼2400 to 2200 m) at Site 289 cooled 2° to 4°C between ∼ 18.7 and 5.8 Ma, with about half of the cooling occurring from ∼ 16.1 to 11.1 Ma and the other half from ∼ 9.9 to 7.5 Ma." @default.
• W2079563792 created "2016-06-24" @default.
• W2079563792 creator A5016751560 @default.
• W2079563792 creator A5028593109 @default.
• W2079563792 date "1993-10-01" @default.
• W2079563792 modified "2023-10-13" @default.
• W2079563792 title "Vertical thermal structure evolution of Miocene surface waters: Western equatorial Pacific DSDP Site 289" @default.
• W2079563792 cites W1965840594 @default.
• W2079563792 cites W1967220620 @default.
• W2079563792 cites W1973323075 @default.
• W2079563792 cites W1980368521 @default.
• W2079563792 cites W1996701456 @default.
• W2079563792 cites W2016564007 @default.
• W2079563792 cites W2023158618 @default.
• W2079563792 cites W2033742785 @default.
• W2079563792 cites W2040307384 @default.
• W2079563792 cites W2054410655 @default.
• W2079563792 cites W2059707956 @default.
• W2079563792 cites W2059849751 @default.
• W2079563792 cites W2062552134 @default.
• W2079563792 cites W2077764318 @default.
• W2079563792 cites W2079435827 @default.
• W2079563792 cites W2080403834 @default.
• W2079563792 cites W2081225301 @default.
• W2079563792 cites W2088282146 @default.
• W2079563792 cites W2100145260 @default.
• W2079563792 cites W2123808458 @default.
• W2079563792 cites W2137210680 @default.
• W2079563792 cites W2155738576 @default.
• W2079563792 cites W2155876872 @default.
• W2079563792 cites W2198228026 @default.
• W2079563792 cites W2309787805 @default.
• W2079563792 cites W2337149802 @default.
• W2079563792 cites W2339243953 @default.
• W2079563792 cites W2383688480 @default.
• W2079563792 cites W2464026920 @default.
• W2079563792 cites W4244903786 @default.
• W2079563792 doi "https://doi.org/10.1016/0377-8398(93)90046-z" @default.
• W2079563792 hasPublicationYear "1993" @default.
• W2079563792 type Work @default.
• W2079563792 sameAs 2079563792 @default.
• W2079563792 citedByCount "37" @default.
• W2079563792 countsByYear W20795637922012 @default.
• W2079563792 countsByYear W20795637922013 @default.
• W2079563792 countsByYear W20795637922017 @default.
• W2079563792 countsByYear W20795637922018 @default.
• W2079563792 countsByYear W20795637922019 @default.
• W2079563792 countsByYear W20795637922020 @default.
• W2079563792 countsByYear W20795637922021 @default.
• W2079563792 countsByYear W20795637922022 @default.
• W2079563792 crossrefType "journal-article" @default.
• W2079563792 hasAuthorship W2079563792A5016751560 @default.
• W2079563792 hasAuthorship W2079563792A5028593109 @default.
• W2079563792 hasConcept C105824904 @default.
• W2079563792 hasConcept C111368507 @default.
• W2079563792 hasConcept C122846477 @default.
• W2079563792 hasConcept C127313418 @default.
• W2079563792 hasConcept C151730666 @default.
• W2079563792 hasConcept C21790881 @default.
• W2079563792 hasConcept C2780275952 @default.
• W2079563792 hasConcept C2780368712 @default.
• W2079563792 hasConcept C83042747 @default.
• W2079563792 hasConceptScore W2079563792C105824904 @default.
• W2079563792 hasConceptScore W2079563792C111368507 @default.
• W2079563792 hasConceptScore W2079563792C122846477 @default.
• W2079563792 hasConceptScore W2079563792C127313418 @default.
• W2079563792 hasConceptScore W2079563792C151730666 @default.
• W2079563792 hasConceptScore W2079563792C21790881 @default.
• W2079563792 hasConceptScore W2079563792C2780275952 @default.
• W2079563792 hasConceptScore W2079563792C2780368712 @default.
• W2079563792 hasConceptScore W2079563792C83042747 @default.
• W2079563792 hasIssue "3" @default.
• W2079563792 hasLocation W20795637921 @default.
• W2079563792 hasOpenAccess W2079563792 @default.
• W2079563792 hasPrimaryLocation W20795637921 @default.
• W2079563792 hasRelatedWork W1650860606 @default.
• W2079563792 hasRelatedWork W1966552690 @default.
• W2079563792 hasRelatedWork W1988915328 @default.
• W2079563792 hasRelatedWork W1990579398 @default.
• W2079563792 hasRelatedWork W2054011332 @default.
• W2079563792 hasRelatedWork W2078475634 @default.
• W2079563792 hasRelatedWork W2093722277 @default.
• W2079563792 hasRelatedWork W2122310234 @default.
• W2079563792 hasRelatedWork W2162398311 @default.
• W2079563792 hasRelatedWork W2799946384 @default.
• W2079563792 hasVolume "22" @default.
• W2079563792 isParatext "false" @default.
• W2079563792 isRetracted "false" @default.
• W2079563792 magId "2079563792" @default.
• W2079563792 workType "article" @default.