# Amundsenisen Dronning Maud Land oxygen isotope and accumulation rate data from 1895-1996 CE #----------------------------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program #----------------------------------------------------------------------- # NOTE: Please cite original publication, online resource and date accessed when using this data. # If there is no publication information, please cite Investigator, title, online resource and date accessed. # # Description/Documentation lines begin with # # Data lines have no # # # Online_Resource: https://www.ncdc.noaa.gov/paleo/study/23235 # Description: NOAA Landing Page # Online_Resource: http://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/stenni2017antarctica/DMLicecore/Site1_16-accum-DML_Plateau_FB97DML09.txt # Description: NOAA location of the template # # Archive: Ice Cores # # Dataset_DOI: # # Parameter_Keywords: oxygen isotopes, accumulation #--------------------------------------- # Contribution_Date # Date: 2017-12-14 #--------------------------------------- # File_Last_Modified_Date # Date: 2017-12-14 #--------------------------------------- # Title # Study_Name: Amundsenisen Dronning Maud Land oxygen isotope and accumulation rate data from 1895-1996 CE #--------------------------------------- # Investigators # Investigators: Oerter, Hans; Graf, Wolfgang; Wilhelms, Frank; Minikin, Andreas; Miller, Heinz #--------------------------------------- # Description_Notes_and_Keywords # Description: DML data contributed to the PAGES 2k project # Provided Keywords: oxygen isotope of water, temperature proxy, accumulation rate #--------------------------------------- # Publication # Authors: Oerter, Hans; Graf, Wolfgang; Wilhelms, Frank; Minikin, Andreas; Miller, Heinz # Published_Date_or_Year: 1999 # Published_Title: Accumulation studies on Amundsenisen, Dronning Maud Land, Antarctica, by means of tritium, dielectric profiling and stable-isotope measurements: first results from the 1995–96 and 1996–97 field seasons # Journal_Name: Annals of Glaciology # Volume: 29 # Edition: # Issue: 1 # Pages: 1-9 # Report Number: # DOI: 10.3189/172756499781820914 # Online_Resource: # Full_Citation: # Abstract: The paper focuses on studies of snow-pit samples and shallow firn cores taken during the 1995-96 and 1996-97 field seasons at Amundsenisen, Dronning Maud Land, Antarctica. The dating of the firn is based on the artificial tritium distribution in the snow cover and on several reference horizons identified by electrical measurements. The early 1964 through 1965 horizon is marked by the deposition of sulfate released to the atmosphere during the eruption of the Agung volcano in March 1963; this horizon was detected by dielectric profiling and electrical conductivity measurements: the proof by chemical analysis has still to be seen. At the ten investigated sites on Amundsenisen the 1964-65 horizon was identified 4.1-5.7 m below the surface. The accumulation rates on Amundsenisen are 41-91kg m-2 a−1 The cores are up to 100 years old A relationship between isotope content and the mean air temperature on a regional scale can be based on measurements of firn temperature at 10 m depth at the drilling sites Between Neumayer station at the coast and Heimefrontfiella, the temperature gradient of the deuterium content is 9.6%0 K−1. South of Heimefrontfiella, on the Amundsenisen plateau, it is only 5.5‰ K−1. Time series of yearly accumulation rates show no significant trend For the isotope records a significant trend to higher values with gradients of 0.1-0.2 δ 2H‰a−1 can be seen in five of the ten time series #--------------------------------------- # Funding_Agency # Funding_Agency_Name: Deutsche Forschungsgemeinschaft # Grant: Re-762/2 #--------------------------------------- # Funding_Agency # Funding_Agency_Name: European Science Foundation/European Commission # Grant: ENV4-CT95-0074 #--------------------------------------- # Site Information # Site_Name: DML09 Amundsenisen Dronning Maud Land # Location: Antarctica # Country: # Northernmost_Latitude: -75.9333 # Southernmost_Latitude: -75.9333 # Easternmost_Longitude: 7.2217 # Westernmost_Longitude: 7.2217 # Elevation: 3145 #--------------------------------------- # Data_Collection # Collection_Name: DML09C97_00 accum Oerter1999 # First_Year: 1897 # Last_Year: 1996 # Time_Unit: AD # Core_Length: 11.1 # Notes: #--------------------------------------- # Chronology_Information # Chronology: # # Ant2k volcanic event peak date (CE) Depth of volcanic peak in cores (m) # #--------------------------------------- # Variables # Data variables follow that are preceded by "##" in columns one and two. # Variables list, one per line, shortname-tab-longname components (9 components: what, material, error, units, seasonality, archive, detail, method, C or N for Character or Numeric data) ## year age ,,,years CE,,ice core,,,N,titrium content, dielectric profiling, electical conductivity, volcanic reference horizons ## accum accumulation rate,snow,,kg/m2/yr,,ice core,,,N,calculated #------------------------ # Data # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing Value: NaN year accum 1996 NaN 1995 44.2 1994 44.2 1993 44.2 1992 44.2 1991 44.2 1990 44.2 1989 44.2 1988 44.2 1987 44.2 1986 44.2 1985 44.2 1984 44.2 1983 43.9 1982 NaN 1981 44.5 1980 44.2 1979 44.2 1978 44.2 1977 44.2 1976 44.2 1975 44.2 1974 44.2 1973 44.2 1972 44.2 1971 28.6 1970 46.7 1969 58.1 1968 61.1 1967 40.5 1966 37.2 1965 40.5 1964 20.3 1963 64.2 1962 44.1 1961 45.4 1960 53.4 1959 28.5 1958 46.4 1957 25.2 1956 50.8 1955 39.7 1954 26.2 1953 55.1 1952 44.4 1951 48.1 1950 23.6 1949 28.1 1948 63.8 1947 59.3 1946 38.4 1945 58.6 1944 49.1 1943 67.3 1942 61 1941 29.2 1940 36.2 1939 55.4 1938 55.4 1937 67.5 1936 52.7 1935 73.5 1934 54.4 1933 43.7 1932 64.7 1931 58.2 1930 31.6 1929 36.2 1928 25.3 1927 28.9 1926 77.1 1925 65.9 1924 44.2 1923 65.3 1922 46.8 1921 58.7 1920 30.5 1919 39.3 1918 43.4 1917 59.4 1916 19.9 1915 47.8 1914 59.9 1913 39.9 1912 63.7 1911 31.9 1910 56.5 1909 44.2 1908 30.7 1907 57.6 1906 31.5 1905 36.5 1904 40.5 1903 52.6 1902 59.9 1901 28.4 1900 48 1899 36 1898 28 1897 28