Holocene-Late pleistocene climatic ice core records for Qinghai-Tibetan plateau

Journal Article · Fri Oct 27 00:00:00 EDT 1989 · Science (Washington, D.C.); (USA)

DOI:https://doi.org/10.1126/science.246.4929.474· OSTI ID:6538317

Thompson, L G; Mosley-Thompson, E; Davis, M E; Bolzan, J F; Dai, J; Klien, L ^[1]; Yao, T; Wu, X; Xie, Z ^[2]; Gundestrup, N ^[3]

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1. Ohio State Univ., Columbus (USA)
2. Lanzhou Institute of Glaciology and Geocryology (China)
3. Univ. of Copenhagen (Denmark)

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-Wuerm 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}{sup 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.

• OSTI ID: 6538317
• Journal Information: Science (Washington, D.C.); (USA), Vol. 246:4929; ISSN 0036-8075
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
CLIMATES
VARIATIONS
ICE CAPS
DRILL CORES
AEROSOLS
AIR POLLUTION
CHINA
DUSTS
ECOLOGICAL CONCENTRATION
OXYGEN 18
QUATERNARY PERIOD
TRACER TECHNIQUES
ASIA
CENOZOIC ERA
COLLOIDS
DISPERSIONS
EVEN-EVEN NUCLEI
GEOLOGIC AGES
ICE
ISOTOPE APPLICATIONS
ISOTOPES
LIGHT NUCLEI
NUCLEI
OXYGEN ISOTOPES
POLLUTION
SOLS
STABLE ISOTOPES
540111* - Environment
Atmospheric- Basic Studies- Radiometric Techniques- (1990-)