Science. 1989 Oct 27;246(4929):474-7. doi: 10.1126/science.246.4929.474.
Three ice cores to bedrock from the Dunde ice cap on the north-central Qinghai-Tibetan Plateau of China provide a detailed record of Holocene and Wisconsin-Würm late glacial stage (LGS) climate changes in the subtropics. The records reveal that LGS conditions were apparently colder, wetter, and dustier than Holocene conditions. The LGS part of the cores is characterized by more negative delta(18)O ratios, increased dust content, decreased soluble aerosol concentrations, and reduced ice crystal sizes than the Holocene part. These changes occurred rapidly approximately 10,000 years ago. In addition, the last 60 years were apparently one of the warmest periods in the entire record, equalling levels of the Holocene maximum between 6000 and 8000 years ago.
三篇取自青藏高原中北部的敦德冰帽、直达基岩的冰芯，为亚热带全新世和末次冰期-冰后期（LGS）气候变迁提供了详尽的记录。记录表明，LGS 时期的气候比全新世时期明显更冷、更湿润、多尘。LGS 时期的冰芯较全新世时期具有更低的氧同位素比值（δ(18)O）、更多的尘埃含量、更低的可溶气溶胶浓度和更小的冰晶尺寸。这些变化大约在一万年前迅速发生。此外，过去的 60 年显然是整个记录中最温暖的时期之一，与 6000 至 8000 年前全新世最高水平相当。
