# 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_11-accum-DML_Plateau_FB97DML04.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: DML04 Amundsenisen Dronning Maud Land # Location: Antarctica # Country: # Northernmost_Latitude: -74.4094 # Southernmost_Latitude: -74.4094 # Easternmost_Longitude: 7.2181 # Westernmost_Longitude: 7.2181 # Elevation: 3161 #--------------------------------------- # Data_Collection # Collection_Name: DML04C97_00 accum Oerter1999 # First_Year: 1905 # Last_Year: 1996 # Time_Unit: AD # Core_Length: 11.7 # 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 ,,,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 52.2 1994 52.2 1993 52.2 1992 52.2 1991 52.2 1990 51.7 1989 52.4 1988 52.2 1987 52.2 1986 52.2 1985 52.2 1984 51.9 1983 NaN 1982 52.2 1981 38.1 1980 66.8 1979 51.6 1978 52.2 1977 40.1 1976 42.6 1975 72.1 1974 54 1973 52.2 1972 32.9 1971 71.4 1970 26.6 1969 37.2 1968 23.6 1967 60.8 1966 50.9 1965 45.8 1964 49.8 1963 107.4 1962 67.4 1961 56.9 1960 25.7 1959 59.2 1958 66.8 1957 65 1956 48.9 1955 69.8 1954 50 1953 48.1 1952 53 1951 30.5 1950 31.1 1949 54.2 1948 71.2 1947 44.3 1946 41.9 1945 42.2 1944 64.9 1943 67.5 1942 52.2 1941 35.4 1940 37.7 1939 48.5 1938 51.2 1937 74.6 1936 39.8 1935 47 1934 55.5 1933 79.8 1932 43.1 1931 40.9 1930 54.6 1929 47.9 1928 74.3 1927 35.8 1926 68.5 1925 56.4 1924 34.9 1923 48.9 1922 48.9 1921 90.2 1920 48.1 1919 37.8 1918 39.9 1917 56.8 1916 59.9 1915 39.3 1914 42.5 1913 74.7 1912 65.7 1911 38.7 1910 59.4 1909 35 1908 42 1907 91.1 1906 56 1905 63