@article{oai:nagoya.repo.nii.ac.jp:00011766,
 author = {渡邊, 隆広 and WATANABE, Takahiro and 中村, 俊夫 and NAKAMURA, Toshio and 河合, 崇欣 and KAWAI, Takayoshi},
 journal = {名古屋大学加速器質量分析計業績報告書},
 month = {Mar},
 note = {2004年、モンゴル・フブスグル湖から長さ約81mのドリリングコア試料(試料名, HDP04)が採取された。本稿ではHDP04堆積物試料の表層約350cm、及びドリリングコアの表層部分を補完する目的で採取されたグラビティーコア (試料名, GC4,コア長61cm)の放射性炭素年代測定結果を報告する。ドリリングコアについては、深度方向に対する明瞭な^<14>C年代値の変化が見られず、試料採取時のトラブル、もしくは堆積層の撹乱を示唆する結果が得られた。, Lacustrine sediments provide excellent continental records of past variations in environment and biological activities. Lake Khubusgul, Mongolia, is one of the largest lakes of East Asia and located at a high elevation (1645m above sea level). This geographical characteristic makes Lake Khubusgul a unique place for paleoclimate studies using a continuous core sediment. A drilling core (HDP04) and gravity core (GC-4) were taken from the basin floor of Lake Khubusgul (50°57'19"N, 100°21'32"E; water depth, 250m) in 2004. The lengths of the HDP04 and GC-4 sediment cores were ca. 81m and 0.6m, respectively. AMS ^<14>C age dating for the latest Quaternary was performed for the 18 samples from the upper part of the HDP04 sediment cores (〜350cm depth) and the gravity core by an accelerator mass spectrometer (Model-4130 AMS, HVEE). AMS ^<14>C ages of total organic materials in the HDP04 sediment core do not become progressively older with depth, which suggest that sedimentary layers were disturbed by piston coring. The linear sedimentation rates are estimated to be 1.0 cm/kyr for 0-10 cm and 3.0 cm/kyr for 10-20 cm of the gravity core from Lake Khubusgul (GC-4), based on the conventional ^<14>C ages. Several radiocarbon age studies on other sediment cores from Lake Khubusgul show a rate of sediment accumulation ca. 1.3-5.7 cm/kyr [Fedotov et al., 2003; Nara et al., 2004]. The average linear sedimentation rates of GC-4 sediment core (0-20cm depth) are comparable with those from other cores from the Lake Khubusgul., タンデトロン加速器質量分析計業績報告 Summaries of Researches Using AMS 2004 (平成16)年度},
 pages = {148--155},
 title = {モンゴル・フブスグル湖から採取された81mドリリングコア試料 (HDP04)の放射性炭素年代測定(タンデトロン加速器質量分析計業績報告2004(平成16)年度)},
 volume = {16},
 year = {2005}
}