noaa-icecore-19422 Dome Fuji, Antarctica Core DF2 1-cm Electrical Conductivity Measurements Fujita, S.; Goto-Azuma, K.; Fujita, K.; Fujii, Y.; Fukui, K.; Igarashi, M.; Iizuka, Y.; Kameda, T.; Kamiyama, K.; Motoyama, H.; Nakazawa, F.; Suzuki, K.; Suzuki, T.; Takata, M. Dome Fuji, Antarctica Core DF2 1-cm Electrical Conductivity Measurements 2015-10-29 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/19422 Investigator S. Fujita Investigator K. Goto-Azuma Investigator K. Fujita Investigator Y. Fujii Investigator K. Fukui Investigator M. Igarashi Investigator Y. Iizuka Investigator T. Kameda Investigator K. Kamiyama Investigator H. Motoyama Investigator F. Nakazawa Investigator K. Suzuki Investigator T. Suzuki Investigator M. Takata earth science paleoclimate ice cores electrical conductivity,bulk ice,null,nanosiemens,null,ice cores,null,alternating current electrical conductivity measurement,N,null earth science paleoclimate ice cores electrical conductivity,bulk ice,null,nanoampere,null,ice cores,null,direct current electrical conductivity measurement,N,null earth science paleoclimate ice cores depth,null,null,meter,null,ice cores,null,null,N,null earth science paleoclimate ice core physical properties geoscientificInformation 220000 cal yr BP 47000 cal yr BP Complete -77.32 -77.32 38.7 38.7 3810 3810 Continent Antarctica Dome Fuji>LATITUDE -77.32>LONGITUDE 38.7 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 Fujita, S., Parrenin, F., Severi, M., Motoyama, H., and Wolff, E. W. 2015 Climate of the Past 11 10 1395-1416 10.5194/cp-11-1395-2015 http://www.clim-past.net/11/1395/2015/

Two deep ice cores, Dome Fuji (DF) and EPICA Dome C (EDC), drilled at remote dome summits in Antarctica, were volcanically synchronized to improve our understanding of their chronologies. Within the past 216 kyr, 1401 volcanic tie points have been identified. DFO2006 is the chronology for the DF core that strictly follows O(2)/N(2) age constraints with interpolation using an ice flow model. AICC2012 is the chronology for five cores including the EDC core, and is characterized by glaciological approaches combining ice flow modelling with various age markers. A precise comparison between the two chronologies was performed. The age differences between them are within 2 kyr, except at Marine Isotope Stage (MIS) 5. DFO2006 gives ages older than AICC2012, with peak values of a difference of 4.5 kyr and 3.1 kyr at MIS 5d and MIS 5b, respectively. Accordingly, the ratios of duration (AICC2012/DFO2006) range between 1.4 at MIS 5e and 0.7 at MIS 5a. When making a comparison with accurately dated speleothem records, the age of DFO2006 agrees well at MIS5d, while the age of AICC2012 agrees well at MIS5b, supporting their accuracy at these stages. In addition, we found that glaciological approaches tend to give chronologies with younger ages and with longer durations than age markers suggest at MIS 5d-6. Therefore, we hypothesize that the causes of the DFO2006-AICC2012 age differences at MIS 5 are: (i) overestimation in surface mass balance at around MIS 5d-6 in the glaciological approach and (ii) an error in one of the O(2)/N(2) age constraints by ~3 kyr at MIS 5b. Overall, we improved our knowledge of the timing and duration of climatic stages at MIS 5. This new understanding will be incorporated into the production of the next common age scale. Additionally, we found that the deuterium signals of ice, deltaD(ice), at DF tends to lead the one at EDC, with the DF lead being more pronounced during cold periods. The lead of DF is by +710 years (maximum) at MIS 5d, -230 years (minimum) at MIS 7a and +60-+126 years on average. STUDY NOTES: Dome Fuji, Antarctica Ice Core DF2 1-cm Electrical Conductivity Measurements (ECM) at -20C for depth range 875 - 2200m.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/domefuji/df2ecm1cm.txt Data File; Dome Fuji Core DF2 1-cm ECM Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/domefuji/df2ac-ecm1cm.txt Data File; Dome Fuji Core DF2 1-cm AC-ECM Data USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11