Lake Titicaca 370KYr LT01-2B Sediment Data Fritz, S.C.; Baker, P.A.; Seltzer, G.O.; Ballantyne, A.; Tapia, P.; Cheng, H.; Edwards, R.L. Fritz, S.C. Baker, P.A. Seltzer, G.O. Ballantyne, A. Tapia, P. Cheng, H. Edwards, R.L. PAGES 2k Network PAGES LOTRED SA2k earth science/paleoclimate/paleolimnology (depth at sample end,null,null,meter,null,paleolimnology,composited,null,N,null) earth science/paleoclimate/paleolimnology (total saline diatoms,null,null,percent,null,paleolimnology,null,null,N,saline planktic) earth science/paleoclimate/paleolimnology (total benthic diatoms,null,null,percent,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (depth at sample start,null,null,centimeter,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (depth at sample start,null,null,meter,null,paleolimnology,composited,null,N,null) earth science/paleoclimate/paleolimnology (total freshwater diatoms,null,null,percent,null,paleolimnology,null,null,N,freshwater planktic) earth science/paleoclimate/paleolimnology (age,null,null,year,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (depth at sample end,null,null,meter,null,paleolimnology,corrected,null,N,null) earth science/paleoclimate/paleolimnology (organic carbon,sediment,null,percent,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (volume magnetic susceptibility,sediment,null,dimensionless (SI system),null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (depth at sample end,null,null,centimeter,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (depth,null,null,meter,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (calcium carbonate,sediment,null,percent,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (depth at sample start,null,null,meter,null,paleolimnology,corrected,null,N,null) earth science/paleoclimate/paleolimnology (delta 13C,organic matter,null,per mil PDB,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (total salinity indifferent diatoms,null,null,percent,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (age,null,null,calendar year before present,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (Lake Titicaca Core LT01-2B>LATITUDE -15.93>LONGITUDE -69.25) A 136-m-long drill core of sediments was recovered from tropical high-altitude Lake Titicaca, Bolivia-Peru, enabling a reconstruction of past climate that spans four cycles of regional glacial advance and retreat and that is estimated to extend continuously over the last 370,000 yr. Within the errors of the age model, the periods of regional glacial advance and retreat are concordant respectively with global glacial and interglacial stages. Periods of ice advance in the southern tropical Andes generally were periods of positive water balance, as evidenced by deeper and fresher conditions in Lake Titicaca. Conversely, reduced glaciation occurred during periods of negative water balance and shallow closed-basin conditions in the lake. The apparent coincidence of positive water balance of Lake Titicaca and glacial growth in the adjacent Andes with Northern Hemisphere ice sheet expansion implies that regional water balance and glacial mass balance are strongly influenced by global-scale temperature changes, as well as by precessional forcing of the South American summer monsoon. STUDY NOTES: Carbon and diatom data from 136m long sediment core LT01-2B, Lake Titicaca, Bolivia/Peru, covering approximately 370,000 years. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Fritz, S.C. Investigator : Baker, P.A. Investigator : Seltzer, G.O. Investigator : Ballantyne, A. Investigator : Tapia, P. Investigator : Cheng, H. Investigator : Edwards, R.L. 2008-01-01 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/6069 https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/bolivia/titicaca2007.xls https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/bolivia/titicaca2007.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/bolivia/titicaca2007.xls https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/bolivia/titicaca2007.txt English https://www.ncdc.noaa.gov/paleo/study/6069 https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/bolivia/titicaca2007.xls https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/bolivia/titicaca2007.txt Fritz, S.C., P.A. Baker, G.O. Seltzer, A. Ballantyne, P. Tapia, H. Cheng, and R.L. Edwards2007Quaternary glaciation and hydrologic variation in the South American tropics as reconstructed from the Lake Titicaca drilling projectQuaternary Research68410-42010.1016/j.yqres.2007.07.008 START YEAR: 371950 cal yr BP * END YEAR: -50 cal yr BP -69.25 -15.93 -69.25 -15.93