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Decadal climatic variations recorded in Guliya ice core and comparison with the historical documentary data from East China during the last 2000 years

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Science China Earth Sciences 1999年第S1期42卷 91-100页

作者：施雅风姚檀栋杨保 Lanzhou institute of glaciology and Geocryology Chinese Academy of Sciences Nanjing institute of geography and Limnology Chinese Academy of Sciences

The high-resolution records of δ18O and snow accumulation variations from the Guliya ice core provide valuable data for research on climatic variations at a decadal resolution during the past 2000 years in China. Based on the ice core data, five spells have been divided: the warm and wet period before 270 AD, the cold and dry period between 280 and 970 AD, the moderate and dry period between 970 and 1510 AD, the well-defined' Little Ice Age 'with drastic cold-warm fluctuations between 1510 and 1930 AD and the warming period since 1930 AD. According to the combination of temperature and precipitation, cold events (55 times) surpass warm ones (26 times) , and dry events (55 times) surpass wet ones (45 times) . Cold-wet events (14 times) are less than cold-dry ones (16 times) , while warm-wet events (10 times) are more than warm-dry ones (4 times) . If the difference of 2‰ in δ18O (corresponding to 3K in temperature) between two or three adjacent decades is taken as the criterion of it, the abrupt change has taken place 33 times or so since the 3rd century. Among them are four large ones, occurring in 250-280, 550-580, 1220-1260, and 1520-1560 AD respectively. Comparison of the ice core data with the latest comprehensive research results on historical documents of East China shows that the great climatic events appeared simultaneously or at the same age in the ice core record and in the documentary data, suggesting that consistences and similarities in climatic variation among different areas are far away from each other in the lower to mid-latitudes. However, there is a great difference between them during the Medieval Warm Period, which is conspicuous in the historical documents but not in the ice core. In addition, the first cold event of the Little Ice Age on East China was 60 years earlier than that of the Guliya Ice Cap, when the degree of cooling in West China is more intensive than that of East China. But the third cold event in East China lagged behind that in

关键词： Guliya ice core the last 2000 a climatic variations East China comparison.

THE STRUCTURAL TYPE OF TEMPERATURE AND MECHANISM OF MOVEMENT OF ROCK GLACIER AT THE HEAD OF (?)R(?)MQI RIVER, TIANSHAN MOUNTAINS

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Chinese Science Bulletin 1989年第15期34卷 1286-1291页

作者：崔之久朱诚 Department of geography Peking University Lanzhou institute of glaciology and Geocryology Academia Sinica

The head of the ■rümqi River is situated on the northern slope of the main Kalawucheng Mountains in the middle section of the Tianshan Mountains (43°04′N—43°08′ N and 86°48′ E—87°00′ E). It is a modern periglacial region. Ji Zi-xiu, Li Shu-de et al. and Qiu Guo-qin et al. made preliminary analyses about rock weathering, stone circle, rock stream, heaving stone and frozen

关键词： talus protalus rampart continental cold-bottom rock glacier maritime warm-bottom rock glacier

PROBLEMS OF QUATERNARY ENVIRONMENTAL EVOLUTION AND GEOMORPHOLOGICAL DEVELOPMENT IN THE LUSHAN

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Science in China,Ser.B 1984年第1期27卷 85-100页

作者：李吉均张林源邓养鑫周尚哲 Department of Geology and geography Lanzhou University Lanzhou institute of glaciology and Cryopedology Academia Sinica

The major Quaternary climatic deterioration of the Lushan area occurred mainly in LatePleistocene when a periglacial environment prevailed on the high summits above 1000 m *** resulting frost shattering and gelifluction. The data from sporo-pollen analysis, fossilfauna, paleosols and the elevation of the snowline in the ice ages prove that conditions for thedevelopment of the glaciers did not exist in the Lushan during early and middle Quaternaryperiod. Evidence of former glaciation has not been found in the study on the type sedimen-tary sections in Yejialong and Dajiaochang gully. There are many relict landforms belong-ing to hot and humid tropical climate rather than to glacial one. The problems of the land-form development of the Lushan are also discussed.

关键词： PROBLEMS OF QUATERNARY ENVIRONMENTAL EVOLUTION AND GEOMORPHOLOGICAL DEVELOPMENT IN THE LUSHAN

Climates and Environments of the Holocene Mega thermal Maximum in China

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Science China Chemistry 1994年第4期37卷 481-493页

作者：施雅风孔昭晨王苏民唐领馀王富葆姚檀栋赵希涛张丕远施少华 Nanjing institute of geography and Limnology Academia Sinica Nanjing 210008 Lanzhou Institute of Glaciology and Geocryology Academia Sinica Lanzhou 730000 institute of Botany Academia Sinica Beijing 100093 Nanjing institute of geography and Limnology Academia Sinica Nanjing 210008 Nanjing institute of Geology and Palaeontology Academia Sinica Nanjing 210008 Department of geography and Ocean Science Nanjing University Nanjing 210008 Lanzhou institute of glaciology and Geocryology Academia Sinica Lanzhou 730000 institute of Geology Academia Sinica Beijing 100029 institute of geography Academia Sinica Beijing 100101

Based on data from palynology, paleosols, paleolimnology, ice core, archeology, sea levels, etc. , we reconstructed climates and environments of the Holocene Megathermal maximum (7. 2-6. 0 ka B. P. ), particularly vegetation zones, temperatures, precipitation and sea-level fluctuations. Annual mean temperature during that period was estimated at 1 ℃ higher than today for South China, 2 ℃ higher for the Changjiang River Valley, about 3℃ higher for North China, Northeast China and Northwest China and up to 4 - 5 ℃ higher for southern Qinghai-Xizang Plateau. Relative winter temperatures increased much more than average annual temperatures. The centennial-scale warming was accompanied by the expansion of summer monsoon and recession of winter cold currents as well as northward and westward shift of vegetation zones. Higher lake levels registered in all inland lakes of Inner Mongolia, Xinjiang, Qinghai and Xizang indicated that precipitation increased to a certain extent. The Holocene highest sea level in East China about 1 -3 m higher than today, occurred within 6. 5 and 5. 0 kaB. P. and sea water covered coastal areas of about 7×104 km2, which was the Holocene greatest scope of transgression.

关键词： Holocene Megathermal maximum climatic changes highest sea level.

A PRELIMINARY RESEARCH ON WEATHERING PROCESS IN CASEY STATION, EAST ANTARCTIC

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Science in China,Ser.B 1988年第7期31卷 873-884页

作者：谢又予谢自楚钱琴芳杨绍晋陈冰如杨亦男 institute of geography Academia Sinica Beijing Lanzhou institute of glaciology and Cryopedology Academia Sinica institute of High Energy Physics

The chief aim of this preliminary work is to investigate the weathering process of the bed rock and moraine in Antarctic by the method of sedimentology. Microfractures, the depth of which is less than 1 cm, and macrofissures are formed through frost weathering process. The chemical composition of the weathering products are observably related to their size due to migration process. Weathering materials are relatively rich in rare-earth elements of Ce family. Weathering clay minerals are mainly illite hydromica which can considerably absorb the elements of Ti, K, Cs, Rb, Sc, Sb, As and Fe. The weathering crust of the bed rock has hardly any CaCO3 component, it belongs to primigenial debris weathering crust, with only a slight As pollution.

关键词： East Antarctic Casey Station weathering action frost weathering crust.

Paleoclimatic record from Chumbur-Kosa section in Sea of Azov region since Marine Isotope Stage 11

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Journal of Mountain Science 2016年第6期13卷 985-999页

作者： LIANG Ye YANG Tai-bao Andrey Aleksevitch VELICHKO ZENG Biao SHI Pei-hong WANG Lin-dong HE Yi CHEN Jie CHEN Yu institute of glaciology and ecogeography College of Earth and Environmental SciencesLanzhou UniversityLanzhou 730000China institute of geography Russian Academy of SciencesMoscow 109027Russia

Abstract： Loess-paleosol sequences preserve records of climatic change during the Quaternary, which is important for paleoclimate study. In this study, a loess-palaeosol sequence from the Chumbur- Kosa （CK） site in the Sea of Azov region was investigated to reconstruct climatic variability during the Marine Isotope Stage （MIS）11- MIS 1, using proxies of grain size （GS）, magnetic susceptibility （xlf and Xfd（%））, carbonate content （CaCO3%） and soil color The results enabled formulation of a detailed description of the climatic characteristics related to each individual layer. The sequence indicates that the paleoclimate shifted progressively towards increasingly cooler, somewhat drier conditions. The CK section may thus be ideal for reconstructing climatie eondifions during the Middle and Late Pleistocene in the Sea of Azov region. However, the ）Of value of paleosol $2 in the CK profile indicates different characteristics from the other paleosol layers, dilution of carbonate resulting from carbonate leaching in L2 may be the main reason for the decrease in magnetic susceptibility. Furthermore, through simple analysis part of the environmental evolution process in the Sea of Azov region and Serbia during Middle and Late Pleistocene cycles. The climate cycle expressed by Xfd（%） and Xlf variations show similar patterns, with rapidly alternating cold and warm intervals. Nevertheless, although the two areas had different climatic regimes, geographical settings, and loess source areas, both exhibited similar climate change trends since the MIS 11.

关键词： Loess Paleosol Magnetic susceptibility Paleoclimate Sea of Azov

Variational features of precipitation δ^(18)O in Northeast Qinghai-Tibet Plateau

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Science China Chemistry 1995年第7期38卷 854-864页

作者：章新平施雅风姚檀栋 Department of geography Hunan Normal UniversityChangsha 410081China Lanzhou institute of glaciology and Geocryology Chinese Academy of SciencesLanzhou 730000China

There is a marked positive correlation between δ^(18)O in atmospheric precipitation and temperature in the Northeast Qinghai-Tihet *** amount effect in Tuotuohe station is notable as the temperature is greater than or equal to 7.3℃,so is in Xining as 8.3℃.The analytic results show that the synoptic and climatic significance of different time scales is different,and their degrees are also different. Moreover,the relations between the weather systems in the Northeast Qinghai-Tibet Plateau and δ^(18)O in precipitation are *** the influence of continental air mass the δ^(18)O change in the Plateau is synchronous with that of temperature and under the oceanic air mass originated from the Bengal Bay and the Arabian Sea there is a marked negative correlation between δ^(18)O and precipitation amount or temperature in the monsoon region of the Plateau and also positive one between δ^(18)O and temperature in the non-monsoon region.

关键词： Northeast Qinghai-Tibet Plateau oxygen isotope temperature precipitation amount weather system.

CALCULATING FORMULA OF TIME-DEPENDENT TEMPERATURE REGIME OF FROZEN SOIL

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Chinese Science Bulletin 1990年第2期35卷 128-133页

作者：王劲峰 Lanzhou institute of glaciology and Geocryology Academia Sinica Lanzhou 730000 PRC Institute of GeographyAcademia SinicaBeijing 100012PRC

Thermodynamic study of permafrost in cold regions began when the unsteady solution of 1-D and initial condition problem involving phase change was first given by Stefan in 1890. In 1973, the problem with boundary value of A·τ1/2+B·τ type was solved analytically by using variant substitute method by G.M. Felydman and it is a milestone in solving the problem with changeable boundary condition. In 1981, using small

关键词： small parameter top boundary temperature function time-dependent temperature regime accuracy.

Study on the glacier variation and its runoff responses in the arid region of Northwest China

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Science China Earth Sciences 1999年第S1期42卷 64-71页

作者：刘潮海康尔泗刘时银陈建明刘宗香 Lanzhou institute of glaciology and Geocryology Chinese Academy of Sciences

The glaciers in the arid region of Northwest China are viewed as an independent system, and glacier variation and mass balance fluctuation since the Little Ice Age and in the recent decades are estimated. Based on the estimation, the threshold time of glacier runoff against the backgrounds of the current and future varying climate conditions is simulated.

关键词： glacier variation mass balance glacier runoff.