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25篇 您的检索式:作者名="Wünnemann"
    题名 作者 年代 出处 被引量
1Salt lakes in China:Challenges for reconstructing ecological and climate variations显示文摘1 Introduction Studies on lakes have become an important concern for many scientists since it is well known that lakes can monitor detailed information about ecological,hydrological and sedimentary cycles which canBernd WüNNEMANN 2014Acta Geologica Sinica(English Edition)2014,88,S1:0
2Late Quaternary water depth changes in Hala Lake, northeastern Tibetan Plateau, derived from ostracod assemblages and sediment properties in multiple sediment records显示文摘Dada Yan Bernd Wünnemann 2014Quaternary Science Reviews2014,,:1
3Holocene climate change in the Central Tibetan Plateau inferred by lacustrine sediment geochemical records显示文摘Multi-proxies of lacustrine sediments, such as total carbon (TC), total organic carbon (TOC), total inorganic carbon (TIC), total nitrogen (TN), total sulfur (TS), hydrogen index (HI), oxygen index (OI) and stable carbon isotopic composition of organic matter (δ 13Corg), were analyzed using a 7.3 m core from Zigê Tangco. The source of the organic matter in the sediment was mainly from autochthonous phytoplankton, therefore the significances of proxies can be interpreted as that high TOC, TOC/TS, HI and δ13Corg values, low TC, TIC values corresponded to warm and wet climatic condition, and vice versa. The process of climatic development in the Zigê Tangco region was hence recovered. During the early and Mid-Holocene, the climate was warm and wet and intensive cold events occurred during the periods of 8600 to 8400 cal a BP and 7400 to 7000 cal a BP. In the second half of Holocene, the climate became cold and dry gradually. The palaeoclimatic process during Holocene in Zigê Tangco region matched well with that in Co Ngoin region which is ca 40 km to the south-east. Therefore this palaeoclimatic process represents the Holocene climatic feature in the Central Tibetan Plateau which has the same pattern in the Northern Tibetan Plateau, but the time and duration of some climatic events might be different. We can conclude that in Holocene solar insolation controlled the climatic pattern on the central Tibetan Plateau.Andreas LüCKE Bernd WüNNEMANN 2007Science China Earth Sciences2007,50,10:16
4The Holocene salinity history of Bosten Lake (Xinjiang, China) inferred from ostracod species assemblages and shell chemistry: Possible palaeoclimatic implications显示文摘S. Mischke B. Wünnemann 2006Quaternary International2006,,:1
5Lake Evolution in the Tengger Desert, Northwestern China, during the Last 40,000 Years显示文摘Hans-Joachim Pachur Bernd Wünnemann Hucai Zhang 1995Quaternary Research1995,,2:1
6A strain-based porosity model for use in hydrocode simulations of impacts and implications for transient crater growth in porous targets显示文摘Wünnemann K Collins G Melosh H J 2006Icarus2006,180,2:1
7Early to mid-Holocene lake high-stand sediments at Lake Donggi Cona, northeastern Tibetan Plateau, China显示文摘Dietze E Wünnemann B Hartmann K 2013Quaternary Research2013,79,3:1
8Numerical modeling of impact melt production in porous rocks显示文摘Wünnemann K Collins G S Osinski G R 2008Earth and Planetary Science Letters2008,269,34:1
9A general cooling trend on the central Tibetan Plateau throughout the Holocene recorded by the Lake Zigetang pollen spectra显示文摘Herzschuh U Winter K Wünnemann B 2006Quaternary International2006,154,5:1
10Late glacial and Holocene vegetation, Indian monsoon and westerly circulation in the Trans-Himalaya recorded in the lacustrine pollen sequence from Tso Kar, Ladakh, NW India显示文摘Dieter Demske Pavel E. Tarasov Bernd Wünnemann Frank Riedel 2009Palaeogeography Palaeoclimatology Palaeoecology2009,,3:1
11A general cooling trend on the central Tibetan Plateau throughout the Holocene recorded by the Lake Zigetang pollen spectra显示文摘Ulrike Herzschuh Katja Winter Bernd Wünnemann Shijie Li 2006Quaternary International2006,,:1
12Hydrological evolution during the last 15 kyr in the Tso Kar lake basin (Ladakh,India),derived from geomorphological,sedimentological and palynological records显示文摘Wünnemann B Demske D Tarasov P 2010Quaternary Science Reviews2010,29,9:1
13A Holocene sedimentary record from Bosten Lake,China显示文摘Wünnemann B Mischke S Chen F 2006Palaeogeography Palaeoclimatology Palaeoecology2006,234,2:1
14青藏高原中部全新世气候变化的湖泊沉积地球化学记录显示文摘通过青藏高原中部兹格塘错湖泊沉积物总碳(TC)、总有机碳(TOC)、总氮(TN)、总硫(TS)、氢指数(HI)、氧指数(OI)和有机质的碳同位素(δ^13Corg)等多项指标的综合分析,在判断沉积物中有机质来源的基础上,根据各指标的变化特征阐明了各自的气候指示意义,建立了兹格塘错全新世以来的古气候演化序列.10100 cal a BP兹格塘错地区进入全新世,全新世早中期为暖湿气候特征,在8600~8400和7400~7000 cal a BP发生两次强烈冷事件;中晚全新世以来气候变冷变干.这一气候演化过程与其邻近的错鄂的研究结果相近,代表了青藏高原中部全新世的气候演化特点.青藏高原中部全新世气候变化主要受太阳辐射控制.吴艳宏 Andreas Lücke Bernd Wünnemann 李世杰 王苏民 2007中国科学(D辑)2007,37,9:21
15Early to mid-Holocene lake high-stand sediments at Lake Donggi Cona, northeastern Tibetan Plateau, China显示文摘Elisabeth Dietze Bernd Wünnemann Kai Hartmann Bernhard Diekmann Huijun Jin Georg Stauch Sizhong Yang Frank Lehmkuhl 2013Quaternary Research2013,,3:1
16Directional arrangement of phyllite fragments in phyllite talus slopeat the eastern margin of the Tibetan Plateau显示文摘Phyllite fragments are essential for accumulating and generating talus slope at the toes of hillslopes,however,how they are linked to slope failure remains unknown.This paper reports the directional arrangement of phyllite fragments(DAPF)in phyllite talus slope at the eastern margin of the Tibetan Plateau.Field investigation,mathematical statistics and model experiments were performed in order to systematically understand the influencing factors,which include fragment shape,flat ratio,dip angle(α),and fine particle content(c).The results show that the quadrilateral fragmentgenerates a similar imbricate structure more easily than the triangular and rod fragments in the phyllite talus slope.Additionally,the flat phyllite fragments easily accumulate as imbricated structures on the phyllitetalus slope.When the dip angle(α)is in the range of 20°–30°,the minimum orientation ratio(P)is more than 50%,which means thatthe DAPF phenomenon is more obviousin the phyllite talus slope.For the fine particle content(c)at the same dip angle(α),the minimum orientation ratio(P)is 54%,and the minimum orientation ratio(P)correlates positively with the fine particle content(c).Therefore,compared with the homogeneous talusslope,the phyllite talusslopedisplays a special DAPF phenomenon.This study provides a valuable reference and presents novel knowledgefor risk assessment and engineering design against the phyllite talus slope failure mechanism.WAN Yu-hao ZHAO Xiao-yan LING Si-xiang LI Jin ZENG Cai-yun BERND Wünnemann 2021Journal of Mountain Science2021,18,11:0
17额济纳盆地GN100钻孔不同沉积相的粒度特征显示文摘内蒙额济纳盆地GN100钻孔的沉积相可划分为河流相、湖泊相、沼泽相及风成砂沉积。对该钻孔不同沉积相代表性沉积物的粒度分析表明:额济纳盆地沉积物的粒度特征能够有效区分沉积环境和动力过程。河流相沉积物主要粒度组分为粗砂,以滚动搬运为主,判别值Y为大于1;风成砂主要粒度组分为细砂,Y值范围主要在0附近;沼泽相也以细砂为主且较风成砂更细,Y值主要为负值且小于风成砂;湖相粒度组分主要为细粉砂,以悬浮搬运为主,但不完全是静水悬浮搬运,相比于静水沉积相对颗粒偏大,而Y最小,为小于-9。这些结果可以为区域沉积环境的准确解释提供参考。张驰 WüNNEMANN Bernd 曾琳 张红艳 韩志勇 弋双文 鹿化煜 2015高校地质学报2015,21,4:3
18中德联合冬给措纳湖地区寒区环境变迁研究进展显示文摘青藏高原腹地的内陆湖及其湖相沉积物能够较真实地反映气候变化特征,在高原环境变迁研究中备受中外科学家的关注,2006年8月15日~9月10日,中德联合考察小组对青藏高原东北部的冬给措纳湖一带进行了第四纪冻土、地貌和地质学考察,并对湖岸阶地做了初步的数字高程分析,调查了冬给措纳湖底地形、地貌,采集了湖相沉积物样本,在湖的东岸和西岸发现多年冻土,湖泊西北山谷观察到古冰川活动遗迹,初步推测该湖是由断陷沉降形成,为进一步分析湖区气候和环境变迁,联合小组拟定2007年3月份钻取湖芯.杨思忠 金会军 Bernhard Diekmann Bernd Wünnemann Steffen Mischke 吉延峻 陈建辉 杨奇丽 2006冰川冻土2006,28,6:2
19Quantitative relationship between water-depth and sub-fossil ostracod assemblages in Lake Donggi Cona, Qinghai Province, China显示文摘Steffen Mischke Ulrich B??neck Bernhard Diekmann Ulrike Herzschuh Huijun Jin Annette Kramer Bernd Wünnemann Chengjun Zhang 2010Journal of Paleolimnology2010,,3:1
20Late Quaternary palaeolake levels in Tengger Desert, NW China显示文摘H.C Zhang J.L Peng Y.Z Ma G.J Chen Z.-D Feng B Li H.F Fan F.Q Chang G.L Lei B Wünnemann 2004Palaeogeography Palaeoclimatology Palaeoecology2004,,1:1
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