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Sökning: id:"swepub:oai:DiVA.org:uu-390050" > Timing and Pacing o...

LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00004538naa a2200433 4500
001oai:DiVA.org:uu-390050
003SwePub
008190802s2019 | |||||||||||000 ||eng|
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-3900502 URI
0247 a https://doi.org/10.1029/2018PA0035122 DOI
040 a (SwePub)uu
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
1001 a Auer, Geraldu Japan Agcy Marine Earth Sci & Technol, Dept Biogeochem, Yokosuka, Kanagawa, Japan4 aut
2451 0a Timing and Pacing of Indonesian Throughflow Restriction and Its Connection to Late Pliocene Climate Shifts
264 1b AMER GEOPHYSICAL UNION,c 2019
338 a electronic2 rdacarrier
520 a The Pliocene was characterized by a gradual shift of global climate toward cooler and drier conditions. This shift fundamentally reorganized Earth's climate from the Miocene state toward conditions similar to the present. During the Pliocene, the progressive restriction of the Indonesian Throughflow (ITF) is suggested to have enhanced this shift toward stronger meridional thermal gradients. Reduced ITF, caused by the northward movement of Australia and uplift of Indonesia, impeded global thermohaline circulation, also contributing to late Pliocene Northern Hemisphere cooling via atmospheric and oceanographic teleconnections. Here we present an orbitally tuned high-resolution sediment geochemistry, calcareous nannofossil, and X-ray fluorescence record between 3.65 and 2.97 Ma from the northwest shelf of Australia within the Leeuwin Current. International Ocean Discovery Program Site U1463 provides a record of local surface water conditions and Australian climate in relation to changing ITF connectivity. Modern analogue-based interpretations of nannofossil assemblages indicate that ITF configuration culminated similar to 3.54 Ma. A decrease in warm, oligotrophic taxa such as Umbilicosphaera sibogae, with a shift from Gephyrocapsa sp. to Reticulofenestra sp., and an increase of mesotrophic taxa (e.g., Umbilicosphaera jafari and Helicosphaera spp.) suggest that tropical Pacific ITF sources were replaced by cooler, fresher, northern Pacific waters. This initial tectonic reorganization enhanced the Indian Oceans sensitivity to orbitally forced cooling in the southern high latitudes culminating in the M2 glacial event (similar to 3.3 Ma). After 3.3 Ma the restructured ITF established the boundary conditions for the inception of the Sahul-Indian Ocean Bjerknes mechanism and increased the response to glacio-eustatic variability.
650 7a NATURVETENSKAPx Geovetenskap och miljövetenskapx Geologi0 (SwePub)105042 hsv//swe
650 7a NATURAL SCIENCESx Earth and Related Environmental Sciencesx Geology0 (SwePub)105042 hsv//eng
7001 a De Vleeschouwer, Davidu Univ Bremen, MARUM Ctr Marine & Environm Sci, Bremen, Germany4 aut
7001 a Smith, Rebecca A.u Univ Massachusetts, Dept Geosci, Amherst, MA 01003 USA4 aut
7001 a Bogus, Karau Texas A&M Univ, Int Ocean Discovery Program, College Stn, TX USA;Univ Exeter, Camborne Sch Mines, Penryn, England4 aut
7001 a Groeneveld, Jeroenu Univ Bremen, MARUM Ctr Marine & Environm Sci, Bremen, Germany4 aut
7001 a Grunert, Patricku Univ Cologne, Inst Geol & Mineral, Cologne, Germany4 aut
7001 a Castaneda, Isla S.u Univ Massachusetts, Dept Geosci, Amherst, MA 01003 USA4 aut
7001 a Petrick, Benjaminu Max Planck Inst Chem, Mainz, Germany4 aut
7001 a Christensen, Bethu Adelphi Univ, Environm Studies Program, Garden City, NY USA4 aut
7001 a Fulthorpe, Craigu Univ Texas Austin, Inst Geophys, Austin, TX USA4 aut
7001 a Gallagher, Stephen J.u Univ Melbourne, Sch Earth Sci, Melbourne, Vic, Australia4 aut
7001 a Henderiks, Jorijntjeu Uppsala universitet,Paleobiologi4 aut0 (Swepub:uu)jorhe564
7102 a Japan Agcy Marine Earth Sci & Technol, Dept Biogeochem, Yokosuka, Kanagawa, Japanb Univ Bremen, MARUM Ctr Marine & Environm Sci, Bremen, Germany4 org
7730 t Paleoceanography and Paleoclimatologyd : AMER GEOPHYSICAL UNIONg 34:4, s. 635-657q 34:4<635-657x 2572-4517x 2572-4525
8564 u https://doi.org/10.1029/2018PA003512y Fulltext
8564 u https://uu.diva-portal.org/smash/get/diva2:1340215/FULLTEXT01.pdfx primaryx Raw objecty fulltext:print
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-390050
8564 8u https://doi.org/10.1029/2018PA003512

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