noaa-lake-17379 eng; USA utf8 dataset NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information pointOfContact NOAA World Data Service for Paleoclimatology Data Center Contact 828-271-4800 303-497-6513 325 Broadway, E/NE31 Boulder CO 80305-3328 USA paleo@noaa.gov pointOfContact 2023-09-01 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) NOAA/WDS Paleoclimatology - Lake Towuti, Indonesia 60KYr Geochemical Data 2014-10-31 publication doi:10.25921/r4gm-te09 noaa-lake-17379 NCEI DSI 1200_02 NCEI DSI 1200_01 Costa, K. originator Costa, K. author Russell, J.M. originator Russell, J.M. author Vogel, H. originator Vogel, H. author Bijaksana, S. originator Bijaksana, S. author NOAA National Centers for Environmental Information publisher tableDigital This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI study type is Lake. The data include parameters of paleolimnology with a geographic location of Indonesia. The time period coverage is from 60600 to 650 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data. Records of past climate and environment derived from lake sediment records. Parameter keywords describe what was measured in this dataset. Additional summary information can be found in the abstracts of papers listed in the dataset citations. completed NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information pointOfContact NOAA World Data Service for Paleoclimatology Data Center Contact 828-271-4800 303-497-6513 325 Broadway, E/NE31 Boulder CO 80305-3328 USA paleo@noaa.gov pointOfContact https://www.ncei.noaa.gov/pub/data/paleo/webimages/pc-default-lake.png Paleoclimatology - Lake PNG Earth Science > Climate Indicators > Paleoclimate Indicators > Ocean/Lake Records theme Global Change Master Directory (GCMD) Science Keywords 2025 revision 22 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian earth science > paleoclimate > paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > paleolimnology > geochemistry theme Global Change Master Directory (GCMD) Science Keywords 2025 revision 22 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian What: age; Material: null What: titanium; Material: sediment What: iron; Material: sediment What: magnesium; Material: sediment What: potassium; Material: sediment What: chromium; Material: sediment What: aluminum; Material: sediment theme Paleoenvironmental Standard Terms (PaST) Thesaurus NOAA National Centers for Environmental Information https://www.ncei.noaa.gov/products/paleoclimatology/paleoenvironmental-standard-terms-thesaurus PaST Thesaurus information publisher Ocean > Indian Ocean > Indonesia > Lake Towuti > LATITUDE -2.732836 > LONGITUDE 121.515956 place DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2025 revision 22 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian otherRestrictions Cite as: Costa, K.; Russell, J.M.; Vogel, H.; Bijaksana, S. (2014-10-31): NOAA/WDS Paleoclimatology - Lake Towuti, Indonesia 60KYr Geochemical Data. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/r4gm-te09. Accessed [date]. otherRestrictions Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives. otherRestrictions Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose otherRestrictions None otherRestrictions 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. Hydrological connectivity and mixing of Lake Towuti, Indonesia in response to paleoclimatic changes over the last 60,000 years 2014 publication K.M. Costa, J.M. Russell, H. Vogel, S. Bijaksana author Palaeogeography, Palaeoclimatology, Palaeoecology publisher https://doi.org/10.1016/j.palaeo.2014.10.009 HTTPS Web Browser Associated Reference published 2014 K.M. Costa, J.M. Russell, H. Vogel, S. Bijaksana, 2014: Hydrological connectivity and mixing of Lake Towuti, Indonesia in response to paleoclimatic changes over the last 60,000 years. Palaeogeography, Palaeoclimatology, Palaeoecology, , , 10.1016/j.palaeo.2014.10.009 information crossReference sciencePaper eng; USA geoscientificInformation Date Range: 60600 cal yr BP to 650 cal yr BP; 121.515956 121.515956 -2.732836 -2.732836 Study Coordinates -2.732836 121.515956 -58650 1300 STUDY NOTES: Major and trace element data are reported from river sediments and from sediment core TOW9 in Lake Towuti. For age model and calibration of XRF data, please see Russell et al. 2014. Data are organized according to their presentation in the figures: Figure 3 Downcore profiles of major ion concentrations: Al, Mg, K, and Ti (data file towuti2014ions.txt). Figure 4 Downcore profiles of redox-sensitive elements: Fe, Cr, Co, V, and U (data file towuti2014xrf.txt). Figure 5 K, Mg, Al, and STE concentrations for the rivers. Al and STE concentrations TOW9 lake sediment (below). Figure 6 Average major ion concentrations for the three river groups (below). Figure 7 Lakewater dissolved Fe concentrations (below). Figure 4b. Downcore profiles of redox-sensitive elements: Co, V, and U Age (ka) Co (ppm) V (ppm) U (ppm) 1.17 148 130 0.79 2.40 155 132 0.81 4.58 198 118 0.60 7.17 146 126 0.66 10.00 169 144 0.84 11.39 174 132 0.82 16.92 229 123 0.53 18.47 223 126 0.58 19.83 225 130 0.56 22.68 241 129 0.44 25.92 181 101 0.35 27.49 235 136 0.48 30.92 195 143 0.67 34.04 199 135 0.60 36.74 207 157 0.67 39.52 135 146 1.05 44.44 142 144 0.93 47.74 123 138 0.96 52.64 183 143 0.96 59.18 189 110 0.42 Figure 5a. K, Mg, Al, and STE concentrations for the rivers. Sediment Type Sample K (wt%) Mg (wt%) Al (wt%) STE (ppm) River Bantilang 1.57 5.77 6.05 369 River Lantibu 0.00 10.49 4.99 16.6 River Lelebiu 0.09 6.36 5.93 91.3 River Lemo Lemo 0.03 15.36 3.34 31.9 River Loeha 1.52 2.76 7.24 483 River Mahalona 0.14 21.32 3.22 100 River Taora 1.14 10.57 4.67 90.2 River Tokolalo 0.00 14.80 4.01 22.1 River Tomerakah 0.00 14.69 4.08 14.5 Figure 5b. Al and STE concentrations TOW9 lake sediment Age (ka) Al (wt%) STE (ppm) 1.17 4.79 271 2.40 5.12 272 4.58 4.17 193 7.17 4.53 231 10.00 5.11 292 11.39 5.43 313 16.92 3.53 189 18.47 4.03 202 19.83 4.28 199 22.68 3.89 147 25.92 3.31 131 27.49 5.26 172 30.92 5.02 248 34.04 4.83 237 36.74 5.29 247 39.52 6.00 387 44.44 5.92 363 47.74 5.73 358 52.64 5.05 336 59.18 3.54 145 Figure 6. Average major ion concentrations for the three river groups Mahalona River Mahalona (1s) Metasedimentary River Average Metasedimentary (1s) Peridotite River Average Peridotite (1s) Al (wt%) 3.22 0.31 6.65 0.84 4.18 1.08 Ca (wt%) 1.31 0.05 4.82 2.48 0.80 0.41 K (wt%) 0.14 0.04 1.55 0.03 0.02 0.03 Ti (wt%) 0.15 0.01 0.51 0.04 0.08 0.09 Na (wt%) 0.09 0.01 0.32 0.15 0.01 0.01 Mg (wt%) 21.32 2.16 4.27 2.12 12.16 3.54 Sr (ppm) 14.72 1.74 71.20 2.78 1.93 1.72 Figure 7. Lakewater dissolved Fe concentrations Month-Year Water Depth (m) Fe (ppm) March-13 10 0.01 March-13 80 0.00 March-13 150 0.08 April-13 10 0.00 April-13 80 0.00 April-13 150 0.13 May-13 10 0.00 May-13 80 0.00 May-13 150 0.01 July-13 10 0.01 July-13 80 0.00 July-13 150 0.10 ABSTRACT SUPPLIED BY ORIGINATOR: The Indo-Pacific Warm Pool (IPWP) is an important driver of global climate, but its response to and involvement in paleoclimate change is poorly constrained. We generated a new record of sediment geochemistry from Lake Towuti (2.5S, 121.5E), Indonesia, located in the heart of the IPWP, to investigate changes in hydrological connectivity with upstream lakes and the extent of lake mixing and oxygenation during paleoclimate changes over the last 60,000 years BP (60 ka). Lake Towuti is located at the downstream end of the Malili Lakes, a chain of large, ancient, and biologically diverse tectonic lakes occupying a geologically heterogeneous terrain in central Sulawesi, Indonesia. Major and trace element data from river and lake sediments suggest no changes in sediment provenance during the Last Glacial Maximum (LGM), indicating that some of the Malili Lakes remained hydrologically open despite a regionally drier climate. However, samples from the LGM are uniformly less enriched in trace elements than samples from the Holocene and Marine Isotope Stage 3 (MIS3), which suggests a decrease in weathering intensity during the LGM, likely in response to decreased precipitation and temperature. Changes in Fe and other redox-sensitive trace element concentrations indicate changes in water column oxygenation, with the highest oxygen availability occurring during the LGM (15-35 ka) likely due to more frequent and/or deeper mixing of Lake Towuti's water column. The glacial-interglacial trend in lake oxygenation corresponds with changes in regional precipitation and associated changes in the seasonal cycle. The high degree of faunal endemism in these lakes may be related to changes in the lake geochemistry associated with glacial-interglacial environmental variability driven by changing inputs and redox variability. 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Native Format(s) https://doi.org/10.25921/r4gm-te09 HTTPS Landing Page Metadata Landing Page NCEI landing page with general information and links to access the data. information https://www.ncei.noaa.gov/access/paleo-search/study/17379 HTTPS Web Browser NOAA Study Page Study page with data access information. search https://www.ncei.noaa.gov/products/paleoclimatology/lake HTTPS Information NCEI Lake Page General information for this data type. information https://www.ncei.noaa.gov/pub/data/paleo/paleolimnology/asia/indonesia/towuti2014xrf.txt HTTPS Download NCEI Direct Download Direct download links for dataset files. download https://www.ncei.noaa.gov/pub/data/paleo/paleolimnology/asia/indonesia/towuti2014ions.txt HTTPS Download NCEI Direct Download Direct download links for dataset files. download https://www.ncei.noaa.gov/pub/data/paleo/paleolimnology/asia/indonesia/towuti2014.xls HTTPS Download NCEI Direct Download Direct download links for dataset files. download asNeeded This ISO metadata record was translated from DIF metadata using dif-9x-to-iso-19115-2.xsl Version: 2022-06-21