# 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_13-accum-DML_Plateau_FB97DML06.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: DML06 Amundsenisen Dronning Maud Land # Location: Antarctica # Country: # Northernmost_Latitude: -75.0011 # Southernmost_Latitude: -75.0011 # Easternmost_Longitude: 8.0089 # Westernmost_Longitude: 8.0089 # Elevation: 3246 #--------------------------------------- # Data_Collection # Collection_Name: DML06C97_00 accum Oerter1999 # First_Year: 1899 # Last_Year: 1996 # Time_Unit: AD # Core_Length: 11.8 # 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 48.5 1995 48.5 1994 48.5 1993 48.5 1992 48.5 1991 48.5 1990 47.9 1989 49.1 1988 48.5 1987 48.5 1986 48.5 1985 48.5 1984 48.5 1983 48.5 1982 48.4 1981 NaN 1980 NaN 1979 NaN 1978 33.6 1977 47.7 1976 31.8 1975 61.5 1974 52.4 1973 82.8 1972 78.1 1971 24.2 1970 27.1 1969 45.7 1968 48.5 1967 40.9 1966 74.3 1965 30.2 1964 39.1 1963 57.8 1962 48.9 1961 57.5 1960 120.6 1959 70.1 1958 42.2 1957 57.8 1956 64.4 1955 45.4 1954 38.4 1953 48.9 1952 44.2 1951 40.2 1950 43.8 1949 36.4 1948 42.8 1947 43.2 1946 49.8 1945 56.6 1944 31.7 1943 51.1 1942 64.1 1941 51.3 1940 57.7 1939 32 1938 49.7 1937 36.7 1936 80.2 1935 36.2 1934 43.1 1933 55.5 1932 43.4 1931 39.8 1930 46.5 1929 46.5 1928 76.7 1927 48.5 1926 42.6 1925 61.9 1924 47.3 1923 42 1922 50.1 1921 46.8 1920 39.9 1919 57 1918 38.8 1917 47.5 1916 39.7 1915 67.8 1914 36.3 1913 48.6 1912 36.5 1911 52.6 1910 68.3 1909 60.8 1908 36.1 1907 40 1906 44 1905 61.4 1904 30.6 1903 66.3 1902 65.8 1901 31.2 1900 48.5 1899 68.4