Hydrological variations on the Central Tibetan Plateau since the Last Glacial Maximum and their teleconnection to inter‐regional and hemispheric climate variations
Hydrological variations on the Central Tibetan Plateau since the Last Glacial Maximum and their teleconnection to inter‐regional and hemispheric climate variations
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DOI：
10.1002/jqs.2759
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发表时间：
2015-01
影响因子：
2.3
通讯作者：
T. Kasper;T. Haberzettl;Junbo Wang;G. Daut;S. Doberschütz;Liping Zhu;R. Mäusbacher
中科院分区：
文献类型：
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作者：
T. Kasper;T. Haberzettl;Junbo Wang;G. Daut;S. Doberschütz;Liping Zhu;R. Mäusbacher
从纳木错湖得出的入流、蒸发和生物生产力的十年到亚十年变化被用来重建过去约10年的水文变化。两万四千卡这些变化的时间与北方半球已知的气候变化相对应。在一个干燥寒冷的末次盛冰期之后，纳木错的湖面最初上升了约1000米。两万卡一个BP。潮湿，但进一步寒冷的条件之间约。16.2 14 kcal a BP对应于Heinrich事件1。一个温暖和潮湿的阶段之间约。14和13 k cal a BP表示为流入量和生物生产力的大幅增强，可能与第一次印度洋夏季风加强有关，与Bølling-Allerød复合体相一致。流入量的两步减少和生物生产力的同时下降，直到大约。11.8 k cala BP指的是新仙女木期的凉爽干燥的环境。湖平面在CA峰值。9.4 k cal a BP，尽管水文条件在全新世期间保持相对稳定，仅观察到低幅度变化。
Decadal to sub‐decadal variability of inflow, evaporation and biological productivity derived from Lake Nam Co was used to reconstruct hydrological changes for the past ca. 24 k cal a BP. The timing of these variations corresponds to known climatic shifts on the Northern Hemisphere. After a dry and cold Last Glacial Maximum the lake level of Nam Co initially rose at ca. 20 k cal a BP. Moist but further cold conditions between ca. 16.2 and 14 k cal a BP correspond to Heinrich Event 1. A warm and moist phase between ca. 14 and 13 k cal a BP is expressed as a massive enhancement in inflow and biological productivity and might be associated with a first intensification of the Indian Ocean Summer Monsoon coinciding with the Bølling–Allerød complex. A two‐step decrease in inflow and a contemporaneous decline in biological productivity until ca. 11.8 k cal a BP points to cool and dry conditions during the Younger Dryas. Lake levels peak at ca. 9.4 k cal a BP, although hydrological conditions remain relatively stable during the Holocene with only low‐amplitude variations observed.