noaa-loess-9702 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 2024-02-13 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) NOAA/WDS Paleoclimatology - Ili Basin, China 80KYr Loess Magnetic Data 2010-10-27 publication doi:10.25921/ev15-zf90 noaa-loess-9702 NCEI DSI 1200_02 NCEI DSI 1200_01 Song, Y.G. originator Song, Y.G. author Shi, Z.T. originator Shi, Z.T. author Fang, X.M. originator Fang, X.M. author Nie, J.S. originator Nie, J.S. author Ishikawa, N. originator Ishikawa, N. author Qiang, X.K. originator Qiang, X.K. author Wang, X.L. originator Wang, X.L. 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 Loess and Eolian Dust. The data include parameters of loess and paleosol with a geographic location of China, Eastern Asia. The time period coverage is from 141250 to 0 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 environment derived from Loess and Eolian dust (silt-sized material deposited on the Earth surface by the surface winds. 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-loess.png Paleoclimatology - Loess and Eolian Dust PNG Earth Science > Climate Indicators > Paleoclimate Indicators > Land Records > Loess Earth Science > Paleoclimate > Land Records > Loess 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 > loess and paleosol earth science > paleoclimate > loess and paleosol earth science > paleoclimate > loess and paleosol earth science > paleoclimate > loess and paleosol earth science > paleoclimate > loess and paleosol earth science > paleoclimate > loess and paleosol earth science > paleoclimate > loess and paleosol earth science > paleoclimate > loess and paleosol earth science > paleoclimate > loess and paleosol earth science > paleoclimate > loess and paleosol earth science > paleoclimate > loess and paleosol earth science > paleoclimate > loess and paleosol earth science > paleoclimate > loess and paleosol earth science > paleoclimate > loess and paleosol earth science > paleoclimate > loess 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 Monsoon millennial resolution theme What: age; Material: null What: depth; Material: null What: mass magnetic susceptibility; Material: loess What: mass magnetic susceptibility; Material: loess What: mass magnetic susceptibility; Material: loess What: mass magnetic susceptibility; Material: loess What: mass magnetic susceptibility; Material: loess What: mass magnetic susceptibility; Material: loess What: anhysteretic remanent magnetization; Material: loess What: mass magnetic susceptibility; Material: loess What: depth; Material: null What: age; Material: null What: mass magnetic susceptibility; Material: loess What: anhysteretic remanent magnetization; Material: loess 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 Continent > Asia > Eastern Asia > China > Chaona section > LATITUDE 35.1 > LONGITUDE 107.2 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: Song, Y.G.; Shi, Z.T.; Fang, X.M.; Nie, J.S.; Ishikawa, N.; Qiang, X.K.; Wang, X.L. (2010-10-27): NOAA/WDS Paleoclimatology - Ili Basin, China 80KYr Loess Magnetic Data. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/ev15-zf90. 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. Loess magnetic properties in the Ili Basin and their correlation with the Chinese Loess Plateau. 2010 publication Song, Y.G., Z.T. Shi, X.M. Fang, J.S. Nie, N. Ishikawa, X.K. Qiang, and X.L. Wang author China Science: Earth Sciences publisher https://doi.org/10.1007/s11430-010-0011-5 HTTPS Web Browser Associated Reference published 2010 Song, Y.G., Z.T. Shi, X.M. Fang, J.S. Nie, N. Ishikawa, X.K. Qiang, and X.L. Wang, 2010: Loess magnetic properties in the Ili Basin and their correlation with the Chinese Loess Plateau.. China Science: Earth Sciences, 53, 419-431, 10.1007/s11430-010-0011-5 information crossReference sciencePaper eng; USA geoscientificInformation Date Range: 141250 cal yr BP to 0 cal yr BP; 107.2 107.2 35.1 35.1 Study Coordinates 35.1 107.2 -139300 1950 STUDY NOTES: Magnetic susceptibility data of two loess-paleosol sequences since the last interglaciation, from Central Asia and the Chinese Loess Plateau. One section from Zhaosu, Ili Basin, is located in western Zhaosu county near the boundary between China and Kazakhstan. The Zhaosu loess section (ZSP) is 6.9m thick from the top to the upper part the first paleosol (S1), and the bottom consists of fluvial gravel sediments. According to IRSL (infrared stimulated luminescence) dating of this section, the bottom is 80,000 years old. The other loess section is located at the central Chinese Loess Plateau, named Chaona section (CN). The Chaona section is about 10.4m in thickness with a 141ka tuning age. ABSTRACT SUPPLIED BY ORIGINATOR: Over the past two decades, magnetoclimatological studies of loess-paleosol sequences in the Chinese Loess Plateau (CLP) have made outstanding achievements, which greatly promote the understanding of East Asian paleomonsoon evolution, inland aridification of Asia, and past global climate changes. Loess magnetic properties of the CLP have been well studied. In contrast, loess magnetic properties from outside the CLP in China have not been fully understood. We have little knowledge about the magnetic properties of loess in the Ili Basin, an intermontane depression of the Tianshan (or Tien Shan) Mountains. Here, we present the results of rock magnetic measurements of the Ili loess including mass magnetic susceptibility (χ) and anhysteretic remanent magnetization (ARM), high/low temperature dependence of susceptibility (TDS) and hysteresis, as well as X-ray diffraction (XRD) for mineral analysis. Based on the comparison with loess-paleosol sequences in the CLP (hereafter referred to as the Chinese loess), we discuss the possible magnetic susceptibility enhancement mechanism of the Ili loess. The results show that 1) the total magnetic mineral concentration of the Ili loess is far lower than that of the Chinese loess, though they have similar magnetic mineral compositions. The ferrimagnetic minerals in the Ili loess are magnetite and maghemite, and the antiferromagnetic mineral is hematite; XRD analysis also identifies the presence of ilmenite. The ratio of maghemite is lower in the Ili loess than in the Chinese loess, but the ratios of magnetite and hematite are higher in the Ili loess than in the Chinese loess. 2) The granularity of magnetic minerals in the Ili loess, dominated by pseudo-single domain (PSD) and multi-domain (MD) grains, is generally much coarser than that of the Chinese loess. Ultrafine pedogenically-produced magnetic grains have a very limited contribution to the susceptibility enhancement. Rather, PSD and MD particles of magnetite and maghemite are the main contributors to the enhancement of susceptibility in the Ili loess. 3) The susceptibility enhancement mechanism for the Ili loess is complicated and superimposes both a wind velocity/vigor model (Alaskan or Siberian model) and the in situ ultrafine grain pedogenic model; the former might play an important role in the Ili loess. 4) Magnetic susceptibility enhancements of the Ili loess are related not only to the eolian input of the source area, but also to the local climate, landform, and geological background. Therefore, great care should be taken when reconstructing paleoclimate using magnetic susceptibility data from the Ili loess. 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 distributor In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media. Contact NCEI for other distribution options and instructions. Native Format(s) https://doi.org/10.25921/ev15-zf90 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/9702 HTTPS Web Browser NOAA Study Page Study page with data access information. search https://www.ncei.noaa.gov/products/paleoclimatology/loess-eolian-dust HTTPS Information NCEI Loess and Eolian Dust Page General information for this data type. information https://www.ncei.noaa.gov/pub/data/paleo/loess/china/song2010ili.xls HTTPS Download NCEI Direct Download Direct download links for dataset files. download https://www.ncei.noaa.gov/pub/data/paleo/loess/china/song2010ili.txt 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