# 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_15-accum-DML_Plateau_FB97DML08.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: DML08 Amundsenisen Dronning Maud Land # Location: Antarctica # Country: # Northernmost_Latitude: -75.7547 # Southernmost_Latitude: -75.7547 # Easternmost_Longitude: 3.2936 # Westernmost_Longitude: 3.2936 # Elevation: 2962 #--------------------------------------- # Data_Collection # Collection_Name: DML08C97_00 accum Oerter1999 # First_Year: 1919 # Last_Year: 1996 # Time_Unit: AD # Core_Length: 11.4 # 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 59.2 1995 74.7 1994 62.7 1993 99.3 1992 54.9 1991 NaN 1990 59.4 1989 43.6 1988 49 1987 49.7 1986 56.7 1985 57.6 1984 51.7 1983 NaN 1982 59.6 1981 40.7 1980 35 1979 83.9 1978 62.2 1977 49.1 1976 84.1 1975 85.3 1974 64.2 1973 101.3 1972 50.9 1971 63.2 1970 42.7 1969 49.9 1968 39.5 1967 47.1 1966 32.9 1965 36.7 1964 73.6 1963 96.3 1962 65.5 1961 45.4 1960 100.4 1959 98 1958 38.9 1957 46.4 1956 57.7 1955 65.9 1954 88.6 1953 48.7 1952 75.3 1951 45.2 1950 56.4 1949 41 1948 59.2 1947 67 1946 82.9 1945 36.2 1944 61.5 1943 29.4 1942 78.2 1941 59.2 1940 59.2 1939 59.2 1938 78.9 1937 47.3 1936 51.4 1935 47.6 1934 59.7 1933 75.9 1932 83.8 1931 51.3 1930 27.5 1929 27.8 1928 99.9 1927 33.8 1926 52.7 1925 72.8 1924 72.4 1923 64.2 1922 59.2 1921 40.8 1920 92.1 1919 44.7