noaa-lake-22430 Lake Keilambete, SE Australia Holocene Sediment Data and Lake Level Wilkins, D.; De Deckker, P.; Fifield, L.K.; Gouramanis, C.; Olley, J. Lake Keilambete, SE Australia Holocene Sediment Data and Lake Level 2017-07-10 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/22430 Investigator D. Wilkins Investigator P. De Deckker Investigator L.K. Fifield Investigator C. Gouramanis Investigator J. Olley earth science paleoclimate climate reconstructions|paleolimnology strontium/calcium,strontium/calcium,null,millimole per mole,null,climate reconstructions|paleolimnology,null,null,N,Calculated Sr/Ca ratio of water from measured Sr/Ca of Diacypris compacta ostracod test; reconstructed using partition coefficients of Gouramanis and De Deckker (2010) earth science paleoclimate paleolimnology identified ostracod,null,null,count,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology strontium/calcium,ostracod,null,millimole per mole,null,paleolimnology,null,inductively-coupled plasma mass spectrometry,N,Sr/Ca ratio in Diacypris compacta ostracod valve earth science paleoclimate climate reconstructions|lake levels|paleolimnology depth,null,null,centimeter,null,climate reconstructions|lake levels|paleolimnology,null,null,N,null earth science paleoclimate climate reconstructions|lake levels|paleolimnology age,null,null,calendar year before present,null,climate reconstructions|lake levels|paleolimnology,null,null,N,null earth science paleoclimate paleolimnology depth,null,null,centimeter,null,paleolimnology,null,null,N,Midpoint depth of sample earth science paleoclimate paleolimnology organic matter,dry sediment,null,percent,null,paleolimnology,null,loss on ignition,N,null earth science paleoclimate climate reconstructions|paleolimnology depth at sample end,null,null,centimeter,null,climate reconstructions|paleolimnology,null,null,N,Top depth of sample earth science paleoclimate paleolimnology identified ostracod,null,null,count,null,paleolimnology,null,null,N,Diacypris compacta Ostracod tests earth science paleoclimate paleolimnology identified ostracod,null,null,count,null,paleolimnology,null,null,N,Reticypris clava Ostracod tests earth science paleoclimate climate reconstructions|lake levels lake level,null,null,meter,null,climate reconstructions|lake levels,null,null,N,lake depth in meters; determined through changes in sediment size earth science paleoclimate climate reconstructions|paleolimnology strontium/calcium,strontium/calcium,null,millimole per mole,null,climate reconstructions|paleolimnology,null,null,N,Calculated Sr/Ca ratio of water from measured Sr/Ca of Australocypris robusta ostracod test; reconstructed using partition coefficients of Gouramanis and De Deckker (2010) earth science paleoclimate paleolimnology strontium/calcium,ostracod,null,millimole per mole,null,paleolimnology,null,inductively-coupled plasma mass spectrometry,N,Sr/Ca ratio in Reticypris sp. ostracod valve earth science paleoclimate paleolimnology delta 18O,ostracod,null,per mil VPDB,null,paleolimnology,null,isotope ratio mass spectrometry,N,M. praenuncia ostracod tests earth science paleoclimate paleolimnology depth at sample start,null,null,centimeter,null,paleolimnology,null,null,N,Bottom depth of sample earth science paleoclimate paleolimnology depth at sample start,null,null,centimeter,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology water content,sediment,null,percent,null,paleolimnology,null,null,N,percent of dry weight earth science paleoclimate paleolimnology strontium/calcium,ostracod,null,millimole per mole,null,paleolimnology,null,inductively-coupled plasma mass spectrometry,N,Sr/Ca ratio in Australocypris robusta ostracod valve earth science paleoclimate paleolimnology strontium/calcium,ostracod,null,millimole per mole,null,paleolimnology,null,inductively-coupled plasma mass spectrometry,N,Sr/Ca ratio in Mytilocypris praenuncia ostracod valve earth science paleoclimate paleolimnology depth,null,null,centimeter,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology depth,null,null,centimeter,null,paleolimnology,null,null,N,Equivalent depths between cores extracted from the same lake; laminae sequences used to correlate depths between cores earth science paleoclimate paleolimnology magnetic susceptibility,sediment,null,dimensionless (CGS system),null,paleolimnology,null,null,N,multi-sensor core logger earth science paleoclimate paleolimnology depth at sample end,null,null,centimeter,null,paleolimnology,null,null,N,Top depth of sample earth science paleoclimate paleolimnology event layer,sediment,null,count,null,paleolimnology,null,null,N,number of laminae within a one centimeter interval earth science paleoclimate paleolimnology delta 18O,ostracod,null,per mil VPDB,null,paleolimnology,null,isotope ratio mass spectrometry,N,A. beccarii ostracod tests earth science paleoclimate climate reconstructions|lake levels lake level,null,unspecified margin of error,meter,null,climate reconstructions|lake levels,null,null,N,lake depth 2 meter curve fitting error; three point running mean earth science paleoclimate climate reconstructions|paleolimnology total dissolved solids,ostracod assemblage,null,milligram per liter,null,climate reconstructions|paleolimnology,null,modern analogue technique,N,Root Mean Square Error of MAT=0.3 R2=0.85; Modern Analogue Technique based on 491 modern salinity measurements earth science paleoclimate paleolimnology calcium carbonate,sediment,null,percent,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology grain size class,sediment,null,percent,null,paleolimnology,null,null,N,percentage of sediment with grain size greater than 63um earth science paleoclimate paleolimnology depth at sample end,null,null,centimeter,null,paleolimnology,null,null,N,null earth science paleoclimate climate reconstructions|paleolimnology depth,null,null,centimeter,null,climate reconstructions|paleolimnology,null,null,N,Midpoint depth of sample earth science paleoclimate paleolimnology identified ostracod,null,null,count,null,paleolimnology,null,null,N,Diacypris dietzi Ostracod tests earth science paleoclimate paleolimnology identified ostracod,null,null,count,null,paleolimnology,null,null,N,Platycypris baueri Ostracod tests earth science paleoclimate paleolimnology identified ostracod,null,null,count,null,paleolimnology,null,null,N,Mytilocypris praenuncia Ostracod tests earth science paleoclimate climate reconstructions|paleolimnology total dissolved solids,ostracod assemblage,one standard error,milligram per liter,null,climate reconstructions|paleolimnology,null,modern analogue technique,N,Modern Analogue Technique based on 491 modern salinity measurements earth science paleoclimate paleolimnology delta 18O,ostracod,null,per mil VPDB,null,paleolimnology,null,isotope ratio mass spectrometry,N,D. compacta ostracod tests earth science paleoclimate climate reconstructions|paleolimnology strontium/calcium,strontium/calcium,null,millimole per mole,null,climate reconstructions|paleolimnology,null,null,N,Calculated Sr/Ca ratio of water from measured Sr/Ca of Mytilocypris praenuncia ostracod test; reconstructed using partition coefficients of Gouramanis and De Deckker (2010) earth science paleoclimate climate reconstructions|paleolimnology age,null,null,calendar year before present,null,climate reconstructions|paleolimnology,null,null,N,Best rounded to whole year earth science paleoclimate paleolimnology density,sediment,null,gram per cubic centimeter,null,paleolimnology,null,gamma ray attenuation porosity evaluation,N,gamma-ray attenuation; multi-sensor core logger earth science paleoclimate paleolimnology identified ostracod,null,null,count,null,paleolimnology,null,null,N,Australocypris robusta Ostracod tests earth science paleoclimate climate reconstructions|paleolimnology strontium/calcium,strontium/calcium,null,millimole per mole,null,climate reconstructions|paleolimnology,null,null,N,Calculated Sr/Ca ratio of water from measured Sr/Ca of Reticypris sp. ostracod test; reconstructed using partition coefficients of Gouramanis and De Deckker (2010) earth science paleoclimate paleolimnology age,null,null,calendar kiloyear before present,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology delta 18O,ostracod,null,per mil VPDB,null,paleolimnology,null,isotope ratio mass spectrometry,N,null earth science paleoclimate paleolimnology delta 18O,ostracod,null,per mil VPDB,null,paleolimnology,null,isotope ratio mass spectrometry,N,A. robusta ostracod tests earth science paleoclimate paleolimnology age,null,null,calendar year before present,null,paleolimnology,null,null,N,null earth science paleoclimate climate reconstructions|paleolimnology depth at sample start,null,null,centimeter,null,climate reconstructions|paleolimnology,null,null,N,Bottom depth of sample earth science paleoclimate paleolimnology reconstruction earth science paleoclimate paleolimnology oxygen isotopes earth science paleoclimate paleolimnology population abundance earth science paleoclimate paleolimnology physical properties earth science paleoclimate paleolimnology geochemistry geoscientificInformation hydrology 9550 cal yr BP -54 cal yr BP Complete -38.207 -38.207 142.878 142.878 120 120 Continent Australia/New Zealand Australia Victoria Lake Keilambete>LATITUDE -38.207>LONGITUDE 142.878 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

325 Broadway, E/NE31

Boulder CO 80305-3328 USA online ASCII Daniel Wilkins, Chris Gouramanis, Patrick De Deckker, L. Keith Fifield, Jon Olley 2013 The Holocene 23 6 784-795 10.1177/0959683612471983 http://journals.sagepub.com/doi/10.1177/0959683612471983 Daniel Wilkins, Patrick De Deckker, L. Keith Fifield, Chris Gouramanis, Jon Olley 2012 Quaternary Geochronology 9 3-15 10.1016/j.quageo.2012.01.008 http://www.sciencedirect.com/science/article/pii/S1871101412000106

Reconstructed Holocene lake-level curves from two saline, hydrologically closed maar crater lakes in southwestern Victoria, Australia, show near synchronous lake-level changes throughout the Holocene. We show that lake levels, reconstructed from sediment particle size and ostracod valve chemistry (d18O and Sr/Ca) have undergone rapid (<100 yr), large (>10 m) fluctuations throughout the Holocene. Finer sampling resolution shows a more sensitive response to Holocene climate than was previously presented for Lake Keilambete. Both maar crater lakes show a short-lived maximum in Holocene lake levels around 7.2 ka. The period of lake filling leading to peak lake levels matches the phase of most effective precipitation (7.4-7.0 ka) reconstructed from a high-resolution speleothem record from northern Tasmania. Water levels declined in both lakes during the mid Holocene, with a more substantive decline after ~5 ka which coincides with the end of the Southern Hemisphere hypsithermal. Water levels continued to oscillate with a periodicity of around 300-700 years, before reaching a late-Holocene nadir around 1.8 ka (Keilambete) and 1.3 ka (Gnotuk). The trend and periodicity of oscillations in the maar water levels show commonalities to dD in the Dome C ice core, and suggest that temperature may be a significant component in influencing the Precipitation/Evaporation (P/E) ratio in southeastern Australia during the Holocene. STUDY NOTES: Multiproxy Holocene sediment data and lake level reconstructions from Lake Keilambete, southwestern Victoria, Australia

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/australia/keilambete2013loi.txt Formatted Text Data File; Lake Keilambete Loss on Ignition and Water Content Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/australia/keilambete2013carb.txt Formatted Text Data File; Lake Keilambete Carbonate Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/australia/keilambete2013ms.txt Formatted Text Data File; Lake Keilambete Density and Magnetic Susceptibility Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/australia/keilambete2013lam.txt Formatted Text Data File; Lake Keilambete Laminae Thickness Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/australia/keilambete2013ost.txt Formatted Text Data File; Lake Keilambete Ostracod census and Sr/Ca Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/australia/keilambete2013d18o.txt Formatted Text Data File; Lake Keilambete Ostracod d18O Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/australia/keilambete2013depth.txt Formatted Text Data File; Lake Keilambete Lake Level and Grain Size Data USA/NOAA DIF Version 9.8.4 2019-05-30 2019-05-30