This paper presents evidence for a limnological response to the Laacher See eruption (LSE) as detected in lake sediments from Nahe, northern Germany. The sediment section of the Allerød period dating to between 13 422 and 12 708 cal. a BP is preserved in annual laminations. Within this section, the LSE was identified as a cryptotephra layer (12 944±44 cal. a BP). Microfacies analysis, continuous high‐resolution geochemical measurements and pollen analyses enabled a high‐resolution reconstruction of environmental change. The older part of the Allerød (c. 13 422 to 12 943 cal. a BP) was characterized by relatively stable sedimentation conditions. Evidence for windier conditions dating to c. 13 160 to 13 080 cal. a BP probably reflects the Gerzensee oscillation. Pronounced changes of the lake sedimentation followed the LSE. Four unusually thick varves with increased amounts of allochthonous material indicate serious disturbance of the local environment immediately after the LSE, related to increased storminess and/or the occurrence of high intensity rainfall events. A pronounced reduction of biogenic silica accumulation for c. 60 years after the LSE could reflect a period of acidification. Indications of a simultaneous lake level increase until c. 60 years after the LSE are in line with the supposed reduced evapotranspiration associated with cooler conditions. About 120 years after the LSE, increased oxygen access at the lake bottom, allochthonous input and Cl fluxes point to an onset of increasingly stronger westerly winds, probably as a long‐term response to the LSE. This supports the idea of a southward shift of the mid‐latitude westerlies wind system within the interval between the LSE and the beginning of the Younger Dryas. The pace of the southwards shift of this wind system decreased from 10 km a⁻¹ in the initial phase (40–120 years after LSE) to 6 km a⁻¹ in the later phase (120–200 years after LSE).

中文翻译：

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来自德国北部纳河古湖的Laerer See爆发（LSE）的年度叠层Allerød沉积序列的湖泊学响应

本文提供了对德国北部那合湖沉积物中Laacher See喷发（LSE）的物候学响应的证据。Allerød时期的沉积物剖面可追溯到13 422和12 708 cal之间。BP被保存在年度分层中。在本节中，LSE被识别为隐胎层（12 944±44 cal。a BP）。微相分析，连续的高分辨率地球化学测量和花粉分析实现了环境变化的高分辨率重建。所述Allerød较旧的部分（Ç 13 422至12 943卡。一个BP）的特点是相对稳定的沉淀条件。始于c的较温和条件的证据。13160至13080卡路里 BP可能反映了Gerzensee振荡。LSE之后，湖泊沉积发生了明显变化。LSE后，四个异常厚度较大的异源物质增加，表明当地环境受到严重干扰，这与暴风雨增加和/或高强度降雨事件的发生有关。c的生物二氧化硅的积聚明显减少。LSE后的60年可能反映出一段酸化时期。同时湖泊水位的适应症增加，直到Ç。LSE后的60年符合与较凉的条件有关的蒸散量减少的趋势。LSE发生约120年后，湖泊底部氧气输入，异源输入和Cl通量的增加表明西风开始增强，可能是对LSE的长期响应。这支持了在LSE和Younger Dryas开始之间的间隔内中纬度西风系统向南移动的想法。该风系统的南移速度从初始阶段（LSE后40-120年）的10 km a ^-1降低到后期阶段（LSE后120-200年）的6 km a ^-1。