Silt content of two lake records from the Eifel@en

A comparison of a last interglacial annually laminated and varve counted maar lake record from the Eifel/Germany, with a laminated lake sediment record from Northern Germany shows, that high resolution cores can be correlated across central Europe by dust/loess content, if the resolution of grain size data is on the order of decades/centuries. Phases of widespread dust dispersal are the same as the cold events in the Greenland ice and North Atlantic sea surface temperature patterns. The first occurrence of dust in Northern Germany and in the Eifel is during the Late Eemian Aridity Pulse (LEAP, Sirocko et al. 2005) which is called C26 in ocean records (McManus, same vol.). This cold and arid event occurred exactly at the time of the last glacial inception at 118 kyr. Vegetation change in Northern Germany and the Eifel is out of phase after the LEAP. A taiga/tundra vegetation charcterizes Northern Germany between the LEAP and C24, whereas at the same time a Carpinus dominated temperate forest spread in the Eifel region, comparable to the Carpinus dominated forests in France (Sánchez Goñi et al., 2005). A drastic cooling, associated with widespread aridity, came with the C24 cold event, when the vegetation of central Europe changed to a tundra or shrub tundra.针对德国埃菲尔地区经纹泥计数的末次间冰期年层理玛珥湖（maar lake）记录，与德国北部纹层状湖沉积记录开展的对比研究显示：当粒度数据分辨率达到数十年至百年尺度时，可通过粉尘/黄土含量作为代用指标，实现中欧区域内高分辨率岩芯的地层对比。广泛粉尘扩散阶段与格陵兰冰记录中的冷事件及北大西洋海表温度异常冷期完全一致。德国北部与埃菲尔地区首次出现粉尘的时期为末次间冰期晚期干旱脉冲（Late Eemian Aridity Pulse, LEAP, Sirocko et al. 2005），该事件在海洋记录中被标记为C26（McManus, same vol.）。这一寒冷干旱事件恰好发生在末次冰期起始阶段的118 kyr时期。末次间冰期晚期干旱脉冲（LEAP）过后，德国北部与埃菲尔地区的植被变化呈现相位差：在LEAP与C24事件之间，德国北部发育泰加林/苔原植被；而同期埃菲尔地区则分布以鹅耳枥属（Carpinus）为主的温带森林，该群落特征与法国境内以鹅耳枥属为主的森林相一致（Sánchez Goñi et al., 2005）。C24冷事件伴随急剧降温与广泛干旱，中欧植被由此转变为苔原或灌丛苔原。