noaa-lake-17379 Lake Towuti, Indonesia 60KYr Geochemical Data Costa, K.; Russell, J.M.; Vogel, H.; Bijaksana, S. Lake Towuti, Indonesia 60KYr Geochemical Data 2014-10-31 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/17379 Investigator K. Costa Investigator J.M. Russell Investigator H. Vogel Investigator S. Bijaksana earth science paleoclimate paleolimnology iron,sediment,null,weight percent,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology titanium,sediment,null,percent,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology chromium,sediment,null,weight percent,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology potassium,sediment,null,percent,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology aluminum,sediment,null,percent,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology magnesium,sediment,null,percent,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology age,null,null,calendar kiloyear before present,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology geochemistry geoscientificInformation 60600 cal yr BP 650 cal yr BP Complete -2.732836 -2.732836 121.515956 121.515956 Ocean Indian Ocean Indonesia Lake Towuti>LATITUDE -2.732836>LONGITUDE 121.515956 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 K.M. Costa, J.M. Russell, H. Vogel, S. Bijaksana 2014 Palaeogeography, Palaeoclimatology, Palaeoecology 10.1016/j.palaeo.2014.10.009 http://www.sciencedirect.com/science/article/pii/S0031018214005136 James M. Russell, Hendrik Vogel, Bronwen L. Konecky, Satria Bijaksana, Yongsong Huang, Martin Melles, Nigel Wattrus, Kassandra Costa, and John W. King 2014 Proceedings of the National Academy of Sciences 10.1073/pnas.1402373111 http://www.pnas.org/content/early/2014/03/20/1402373111.abstract

The Indo-Pacific warm pool houses the largest zone of deep atmospheric convection on Earth and plays a critical role in global climate variations. Despite the region's importance, changes in Indo-Pacific hydroclimate on orbital timescales remain poorly constrained. Here we present high-resolution geochemical records of surface runoff and vegetation from sediment cores from Lake Towuti, on the island of Sulawesi in central Indonesia, that continuously span the past 60,000 y. We show that wet conditions and rainforest ecosystems on Sulawesi present during marine isotope stage 3 (MIS3) and the Holocene were interrupted by severe drying between ~33,000 and 16,000 y B.P. when Northern Hemisphere ice sheets expanded and global temperatures cooled. Our record reveals little direct influence of precessional orbital forcing on regional climate, and the similarity between MIS3 and Holocene climates observed in Lake Towuti suggests that exposure of the Sunda Shelf has a weaker influence on regional hydroclimate and terrestrial ecosystems than suggested previously. We infer that hydrological variability in this part of Indonesia varies strongly in response to high-latitude climate forcing, likely through reorganizations of the monsoons and the position of the intertropical convergence zone. These findings suggest an important role for the tropical western Pacific in amplifying glacial-interglacial climate variability. STUDY NOTES: Major and trace element data are reported from river sediments and from sediment core TOW9 in Lake Towuti.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/indonesia/towuti2014.xls Excel Data File; Elements and Major Ions Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/indonesia/towuti2014ions.txt Text Data File; Figure 3 Major Ion Concentrations GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/indonesia/towuti2014xrf.txt Text Data File; Figure 4 Redox-sensitive Elements Data USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11