{"NOAAStudyId":"9640","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":"2010-10-13","dataPublisher":"NOAA","dataType":"SPELEOTHEMS","dataTypeInformation":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/speleothem","difMetadataLink":"http://www1.ncdc.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-cave-9640.xml","doi":null,"earliestYearBP":9607,"earliestYearCE":-7657,"entryId":"noaa-cave-9640","funding":[],"investigators":"Neff, U.; Burns, S.J.; Mangini, A.; Mudelsee, M.; Fleitmann, D.; Matter, A.","mostRecentYearBP":6026,"mostRecentYearCE":-4076,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/9640","originalSource":null,"publication":[{"abstract":"Variations in the amount of solar radiation reaching the Earth \nare thought to influence climate, but the extent of this \ninfluence on timescales of millennia to decades is unclear. \nA number of climate records show correlations between solar \ncycles and climate, but the absolute changes in solar intensity \nover the range of decades to millennia are small and the influence \nof solar flux on climate is not well established. The formation \nof stalagmites in northern Oman has recorded past northward shifts \nof the intertropical convergence zone, whose northward migration \nstops near the southern shoreline of Arabia in the present climate. \nHere we present a high-resolution record of oxygen isotope variations, \nfor the period from 9.6 to 6.1 kyr before present, in a Th-U-dated \nstalagmite from Oman. The d18O record from the stalagmite, \nwhich serves as a proxy for variations in the tropical circulation \nand monsoon rainfall, allows us to make a direct comparison of the \nd18O record with the D14C record from tree rings, which largely \nreflects changes in solar activity. The excellent correlation \nbetween the two records suggests that one of the primary controls \non centennial- to decadal-scale changes in tropical rainfall \nand monsoon intensity during this time are variations in solar \nradiation. \n","author":null,"citation":"Neff, U., S.J. Burns, A. Mangini, M. Mudelsee, D. Fleitmann, \nand A. Matter. 2001. \nStrong coherence between solar variability and the monsoon \nin Oman between 9 and 6 kyr ago. \nNature, Vol. 411, pp. 290-293, 17 May 2001. \n","edition":null,"identifier":{"id":"10.1038/35077048","type":"doi","url":"http://dx.doi.org/10.1038/35077048"},"issue":null,"journal":"Nature","pages":null,"pubRank":"1","pubYear":2001,"reportNumber":null,"title":"Strong coherence between solar variability and the monsoon  in Oman between 9 and 6 kyr ago","type":"publication","volume":null}],"reconstruction":"N","scienceKeywords":["Intertropical Convergence Zone (ITCZ)","Monsoon"],"site":[{"NOAASiteId":"31383","geo":{"geoType":"Feature","geometry":{"coordinates":["23.08","57.35"],"type":"POINT"},"properties":{"easternmostLongitude":"57.35","maxElevationMeters":"800","minElevationMeters":"800","northernmostLatitude":"23.08","southernmostLatitude":"23.08","westernmostLongitude":"57.35"}},"locationName":"Continent>Asia>Western Asia>Middle East>Oman","mappable":"Y","paleoData":[{"NOAADataTableId":"18607","coreLengthMeters":0,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>speleothems>oxygen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/oman/hoti2001.txt","linkText":"hoti2001.txt","urlDescription":"Speleothem","variables":[{"cvAdditionalInfo":null,"cvDataType":"SPELEOTHEMS","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"calendar year before present","cvWhat":"age variable>age"},{"cvAdditionalInfo":null,"cvDataType":"SPELEOTHEMS","cvDetail":"raw","cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>identified mineral>carbonate>calcium carbonate","cvMethod":"isotope ratio mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil VPDB","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"}]},{"NOAAKeywords":["earth science>paleoclimate>speleothems>oxygen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/oman/hoti2001.xls","linkText":"hoti2001.xls","urlDescription":"Speleothem","variables":[]},{"NOAAKeywords":["earth science>paleoclimate>speleothems>oxygen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/syntrace/speleothem/cave-hoti-h5.txt","linkText":"cave-hoti-h5.txt","urlDescription":"Speleothem","variables":[]}],"dataTableName":"H5","dataTableNotes":"Stalagmite H5 from Hoti cave","earliestYear":9607,"earliestYearBP":9607,"earliestYearCE":-7657,"mostRecentYear":6026,"mostRecentYearBP":6026,"mostRecentYearCE":-4076,"species":[],"timeUnit":"cal yr BP"}],"siteName":"Hoti Cave"}],"studyCode":null,"studyName":"Hoti Cave, Oman 9-6 KYrBP Stalagmite Oxygen Isotope Data","studyNotes":"High-resolution stalagmite oxygen isotope data for 9-6 KYrBP \nfrom Hoti Cave, Oman.  Hoti cave is located in northern Oman, \non the southwestern side of the Oman mountains. The modern \nclimate of the area is arid to semi-arid, and the area is \nnot at present affected by the Indian Ocean monsoon system. \nStalagmite H5 from Hoti cave is dated with 12 Th-U ages, \nand the d18O record covers 9.6 to 6.1 kyr before present. \nThe Hoti cave d18O record provides a high-resolution time \nseries of the intensity of Indian Ocean monsoonal rainfall. \n","version":"1.0","xmlId":"8627"}