noaa-ocean-6416 Southwest Pacific ODP1123 Mid-Pleistocene Transition Foraminiferal SST Data Crundwell, M.P.; Scott, G.; Naish, T.; Carter, L. Southwest Pacific ODP1123 Mid-Pleistocene Transition Foraminiferal SST Data 2008-07-01 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/6416 Investigator M.P. Crundwell Investigator G. Scott Investigator T. Naish Investigator L. Carter earth science paleoclimate paleoceanography total sponge spicules,null,null,count,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography identified foraminifer,null,null,count,null,paleoceanography,null,null,N,Turborotalita humilis earth science paleoclimate paleoceanography Trilobatus sacculifer,null,null,count,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography pyrite,sediment,null,count,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography total radiolarians,null,null,count,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography identified foraminifer,null,null,count,null,paleoceanography,null,null,N,Truncorotalia crassula earth science paleoclimate paleoceanography identified foraminifer,null,null,count,null,paleoceanography,null,null,N,Globigerinella calida; Unaccepted name: Globigerina calida earth science paleoclimate paleoceanography Globorotalia inflata,null,null,count,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography fish index,null,null,count,null,paleoceanography,null,null,N,fish teeth earth science paleoclimate paleoceanography total benthic foraminifers,null,null,count,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography identified foraminifer,null,null,count,null,paleoceanography,null,null,N,Sphaeroidinella dehiscens earth science paleoclimate paleoceanography Globorotalia truncatulinoides,null,null,count,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography volcanic material,null,null,count,null,paleoceanography,null,null,N,Glass shards/pumice earth science paleoclimate paleoceanography identified brachiopod,null,null,count,null,paleoceanography,null,null,N,Hirsutella hirsuta earth science paleoclimate paleoceanography total ostracods,null,null,count,null,paleoceanography,null,null,N,ostracods earth science paleoclimate paleoceanography Pulleniatina obliquiloculata,null,null,count,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography Globorotalia truncatulinoides,null,null,count,null,paleoceanography,null,null,N,left coiling earth science paleoclimate paleoceanography age,null,null,radiocarbon year before present,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography Globigerina bulloides,null,null,count,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography identified foraminifer,null,null,count,null,paleoceanography,null,null,N,Globigerinita glutinata earth science paleoclimate paleoceanography Globigerinoides ruber,null,null,count,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography Neogloboquadrina incompta,null,null,count,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography Neogloboquadrina pachyderma,null,null,count,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography total planktic foraminifers,null,null,count,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography Globigerinella siphonifera,null,null,count,null,paleoceanography,null,null,N,Unaccepted name: Globigerinella aequilateralis earth science paleoclimate climate reconstructions|paleoceanography sea surface temperature,null,null,degree Celsius,null,climate reconstructions|paleoceanography,null,artificial neural network,N,null earth science paleoclimate paleoceanography identified foraminifer,null,null,count,null,paleoceanography,null,null,N,Globigerina falconensis earth science paleoclimate paleoceanography foraminifer fragmentation,null,null,count,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography foraminifer fragmentation,null,null,percent,null,paleoceanography,null,null,N,planktic foraminifera earth science paleoclimate paleoceanography Orbulina universa,null,null,count,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography identified foraminifer,null,null,count,null,paleoceanography,null,null,N,Turborotalita quinqueloba earth science paleoclimate paleoceanography Globorotalia truncatulinoides,null,null,count,null,paleoceanography,null,null,N,right coiling earth science paleoclimate paleoceanography depth,null,null,centimeter,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography identified foraminifer,null,null,count,null,paleoceanography,null,null,N,Beella digitata earth science paleoclimate paleoceanography echinoid index,null,null,count,null,paleoceanography,null,null,N,echinoids earth science paleoclimate paleocean reconstruction earth science paleoclimate paleocean population abundance earth science paleoclimate paleocean age control geoscientificInformation Sea Surface Temperature Reconstruction 1185500 14C yr BP 630 14C yr BP 1185500 cal yr BP 603 cal yr BP Complete -41.78 -41.78 -171.5 -171.5 -3290 -3290 Ocean Pacific Ocean South Pacific Ocean ODP1123>LATITUDE -41.78>LONGITUDE -171.5 None Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site. English DOC/NOAA/NESDIS/NCEI National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce https://www.ncdc.noaa.gov/data-access/paleoclimatology-data DATA Center Contact Bruce Bauer bruce.a.bauer@noaa.gov paleo@noaa.gov 303-497-6280 303-497-6513

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Boulder CO 80305-3328 USA online ASCII Crundwell, M., G. Scott, T. Naish, and L. Carter. 2008. Glacial-interglacial ocean climate variability from planktonic foraminifera during the Mid-Pleistocene transition in the temperate Southwest Pacific, ODP Site 1123. Palaeogeography, Palaeoclimatology, Palaeoecology, 260(1-2), 202-229.

Planktonic foraminiferal assemblages and artificial neural network estimates of sea-surface temperature (SST) at ODP Site 1123 (41°47.2'S, 171°29.9'W; 3290 m deep), east of New Zealand, reveal a high-resolution history of glacialŋinterglacial (GŋI) variability at the Subtropical Front (STF) for the last 1.2 million years, including the Mid-Pleistocene climate transition (MPT). Most GŋI cycles of ~ 100 kyr duration have short periods of cold glacial and warm deglacial climate centred on glacial terminations, followed by long temperate interglacial periods. During glacialŋdeglacial transitions, maximum abundances of subantarctic and subtropical taxa coincide with SST minima and maxima, and lead ice volume by up to 8 kyrs. Such relationships reflect the competing influence of subantarctic and subtropical surface inflows during glacial and deglacial periods, respectively, suggesting alternate polar and tropical forcing of southern mid-latitude ocean climate. The lead of SSTs and subtropical inflow over ice volume points to tropical forcing of southern mid-latitude ocean-climate during deglacial warming. This contrasts with the established hypothesis that southern hemisphere ocean climate is driven by the influence of continental glaciations.Based on wholesale changes in subantarctic and subtropical faunas, the last 1.2 million years are subdivided into 4-distinct periods of ocean climate. 1) The pre-MPT (1185ŋ870 ka) has high amplitude 41-kyr fluctuations in SST, superimposed on a general cooling trend and heightened productivity, reflecting long-term strengthening of subantarctic inflow under an invigorated Antarctic Circumpolar Current. 2) The early MPT (870ŋ620 ka) is marked by abrupt warming during MIS 21, followed by a period of unstable periodicities within the 40ŋ100 kyr orbital bands, decreasing SST amplitudes, and long intervals of temperate interglacial climate punctuated by short glacial and deglacial phases, reflecting lower meridional temperature gradients. 3) The late MPT (620ŋ435 ka) encompasses an abrupt decrease in the subantarctic inflow during MIS 15, followed by a period of warm equable climate. Poorly defined, low amplitude GŋI variations in SSTs during this interval are consistent with a relatively stable STF and evenly balanced subantarctic and subtropical inflows, possibly in response to smaller, less dynamic polar icesheets. 4) The post-MPT (435ŋ0 ka) is marked by a major climatic deterioration during MIS 12, and a return to higher amplitude 100 kyr-frequency SST variations, superimposed on a long term trend towards cooler SSTs and increased mixed-layer productivity as the subantarctic inflow strengthened and polar icesheets expanded.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/odp1123-tab.txt GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/crundwell2008 USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11