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首页> 外文期刊>Geografiska Annaler, Series A. Physical Geography >Post-little ice age patterned ground development on two pyrenean proglacial areas: From deglaciation to periglaciation
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Post-little ice age patterned ground development on two pyrenean proglacial areas: From deglaciation to periglaciation

机译:小冰期后在两个比利牛斯河冰河地区形成了地面发育:从冰消作用到灭冰作用

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摘要

This study aims to observe post-Little Ice Age glacier retreat and the constitutive patterned ground development at two French Pyrenean glacier forelands (Taillon Glacier and Pays Baché Glacier). Periglacial feature observations are associated with periods of deglaciation using aerial photos and archive files. Four conclusions are drawn. (1) The two glaciers have lost respectively 68% and 92% of their surface since 1850, which corroborates observations on other Pyrenean glaciers. (2) Patterned ground can develop very rapidly, sometimes only 10 years after deglaciation. (3) Patterned ground size does not systematically increase as a function of the time elapsed since deglaciation. (4) All the forms, even those developing near the Little Ice Age moraines, are active. We propose that the location, activity and size of patterned ground are more probably linked to drift characteristics and local wetness conditions than to the time elapsed since deglaciation.
机译:这项研究的目的是观察小冰河时代后的冰川撤退以及两个法国比利牛斯山脉冰川前陆(泰永冰川和佩斯巴赫冰川)的本构模式地面发育。沿冰期特征的观测与航拍照片和档案文件的冰消期有关。得出四个结论。 (1)自1850年以来,两座冰川的面积分别减少了68%和92%,这证实了其他比利牛斯山脉冰川的观测结果。 (2)图案化的地面可以非常迅速地发展,有时在冰消后仅10年即可发展。 (3)图案化后的地面尺寸并没有随冰消冰时间的流逝而系统地增加。 (4)所有形式,即使是在小冰期冰rain附近发展的形式,都是活跃的。我们认为,图案化地面的位置,活动性和大小可能与漂移特征和局部潮湿条件有关,而不是与自冰消以来经过的时间有关。

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