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首页> 外文期刊>Nordic hydrology >Paleoflood marks in sandur morphometry as the result of the glacier surge (NW Poland)
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Paleoflood marks in sandur morphometry as the result of the glacier surge (NW Poland)

机译：由于冰川激增，桑杜尔形态中的古洪水痕迹（波兰西北部）

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摘要

In the Pomeranian marginal zone of the last Pleistocene glaciation specific morphometric features are found. They represent indicators of surging events affecting the individual outlet glacier lobes of the Scandinavian Ice Sheet margin. They are assumed to have been active during the climate warming of the Weichselian glaciation decay. Many tunnel valleys deep-rooted in the proximal slopes of the terminal moraine ridge with incised gorges and wide extramarginal sandur fans spread from the mouths to the forefield. The relatively low relief intensity factor, the fluvioglacial sediments covering distal slopes of the terminal moraines and 'washed out' older forms may be considered as indirect evidence of outburst floods caused by a re-canalization of the subglacial drainage system. The morphometry of the palaeochannels in the gorge profiles are used to calculate estimates of extreme discharges (c. 5× 10~3-10~5 m~3 s~-1).
机译：在最后一次更新世冰川形成的波美拉尼亚边缘地区，发现了特定的形态特征。它们代表了影响斯堪的纳维亚冰原边缘个别出口冰川裂片的涌动事件的指标。假定它们在魏氏冰川衰落的气候变暖期间是活跃的。许多隧道山谷深深植根在末端冰terminal山脊的近坡上，有切开的峡谷和宽广的边缘沙质扇形物，从河口散布到前场。相对较低的起伏强度因子，覆盖末期沟壑远侧斜坡的河冰沉积物和“冲刷”的旧形式可被认为是由冰下排水系统重新渠化引起的爆发洪水的间接证据。峡谷剖面中古河道的形态用于计算极端放电（c。5×10〜3-10〜5 m〜3 s〜-1）。

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