{"NOAAStudyId":"5484","contactInfo":{"address":"325 Broadway, E/NE31","city":"Boulder","constraints":"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.","country":"USA","dataCenterUrl":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data","email":"paleo@noaa.gov","fax":"303-497-6513","longName":"National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce ","phone":"303-497-6280","postalCode":"80305-3328","shortName":"DOC/NOAA/NESDIS/NCEI","state":"CO","type":"CONTACT INFORMATION"},"contributionDate":"1996-09-01","dataPublisher":"NOAA","dataType":"PALEOLIMNOLOGY","dataTypeInformation":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/lake","difMetadataLink":"http://www1.ncdc.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-lake-5484.xml","doi":null,"earliestYearBP":3320,"earliestYearCE":-1370,"entryId":"noaa-lake-5484","funding":[],"investigators":"Curtis, J.H.","mostRecentYearBP":-43,"mostRecentYearCE":1993,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/5484","originalSource":null,"publication":[{"abstract":"Climate variability on the Yucatan Peninsula during the past 3500 yrs is reconstructed from the measurement of d18O in monospecific ostracods and gastropods in a 6.3-m sediment core from Lake Punta Laguna, Mexico. This late Holocene record is divided into three periods based on changes in mean d18O values. From ~3310 to ~178514C yr B.P. (Period I), low mean d18O values indicate relatively wet conditions (i.e., low evaporation to precipitation ratio,E/P). Mean oxygen isotopic values increased ~178514C yr B.P., and the interval between ~1785 and ~93014C yr B.P. (Period II) was distinctly drier than the periods before or after. The climate during the latter part of Period II was persistently dry, with exceptionally arid events centered at ~1171, 1019, and 94314C yr B.P. (equivalent to 862, 986, and 1051 A.D.). This interval of frequent drought was recorded at several other localities in Mexico and Central America, and coincided with the collapse of Classic Maya civilization. Following the last arid event, -18O values decreased abruptly at ~93014C yr B.P. (beginning of Period III), signaling a return to wetter conditions that have generally prevailed to the present, with the exception of a dry episode centered at 55914C yr B.P. (1391 A.D.). The paleoclimatic record from Punta Laguna provides evidence that multi-decadal and millennial-scale changes inE/Poccurred on the Yucatan Peninsula during the late Holocene. These wet/dry episodes may have influenced cultural evolution in Mesoamerica.","author":null,"citation":"Curtis, J.H.. 1996. Climate Variability on the Yucatan Peninsula (Mexico) during the last 3500 years, and implications for Maya cultural evolution. Quaternary Research Vol. 46, pp. 37-47","edition":null,"identifier":null,"issue":null,"journal":"Quaternary Research","pages":null,"pubRank":"1","pubYear":1996,"reportNumber":null,"title":"Climate Variability on the Yucatan Peninsula (Mexico) during the last 3500 years, and implications for Maya cultural evolution","type":"publication","volume":null}],"reconstruction":"N","scienceKeywords":null,"site":[{"NOAASiteId":"8963","geo":{"geoType":"Feature","geometry":{"coordinates":["20.63","-87.5"],"type":"POINT"},"properties":{"easternmostLongitude":"-87.5","maxElevationMeters":null,"minElevationMeters":null,"northernmostLatitude":"20.63","southernmostLatitude":"20.63","westernmostLongitude":"-87.5"}},"locationName":"Continent>North America>Mexico>Yucatan","mappable":"Y","paleoData":[{"NOAADataTableId":"7283","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleolimnology>oxygen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/yucatan/puntalaguna.txt","linkText":"puntalaguna.txt","urlDescription":"Data","variables":[{"cvAdditionalInfo":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"centimeter","cvWhat":"depth variable>depth"},{"cvAdditionalInfo":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"radiocarbon year before present","cvWhat":"age variable>age"},{"cvAdditionalInfo":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"year Common Era","cvWhat":"age variable>age"},{"cvAdditionalInfo":"Cytheridella ilosvayi","cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"biological material>organism>ostracod","cvMethod":"isotope ratio mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil PDB","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"},{"cvAdditionalInfo":"Cytheridella ilosvayi","cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"biological material>organism>ostracod","cvMethod":"isotope ratio mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil PDB","cvWhat":"chemical composition>isotope>isotope ratio>delta 13C"},{"cvAdditionalInfo":"Pyrgophorus coronatus","cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"biological material>organism>gastropod","cvMethod":"isotope ratio mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil PDB","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"},{"cvAdditionalInfo":"Pyrgophorus coronatus","cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"biological material>organism>gastropod","cvMethod":"isotope ratio mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil PDB","cvWhat":"chemical composition>isotope>isotope ratio>delta 13C"}]},{"NOAAKeywords":["earth science>paleoclimate>paleolimnology>lake level"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/yucatan/readme_curtis1996.txt","linkText":"readme_curtis1996.txt","urlDescription":"Readme","variables":[]}],"dataTableName":"Lake Punta Laguna Core LAKEPUNT","dataTableNotes":null,"earliestYear":3320,"earliestYearBP":3320,"earliestYearCE":-1370,"mostRecentYear":-43,"mostRecentYearBP":-43,"mostRecentYearCE":1993,"species":[],"timeUnit":"cal yr BP"}],"siteName":"Lake Punta Laguna"}],"studyCode":null,"studyName":"Lake Punta Laguna, Mexico 3,500 Year Isotopic Data","studyNotes":"Stable isotopic data (d18O and d13C) with radiocarbon ages, from ostracod and gastropod samples taken in Lake Punta Laguna, Yucatan, Mexico.  These data were used to reconstruct precipitation/evaporation ratios as a paleo-drought indicator, and are correlated to the cultural evolution of the Maya.","version":"1.0","xmlId":"623"}