Historical records of San Rafael glacier advances (North Patagonian Icefield): another clue to 'Little Ice Age' timing in southern Chile?
Historical records of San Rafael glacier advances (North Patagonian Icefield): another clue to 'Little Ice Age' timing in southern Chile?
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圣拉斐尔冰川前进的历史记录（北巴塔哥尼亚冰原）：智利南部“小冰河时代”时间的另一条线索？
DOI：
10.1177/0959683607082414
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
R. Urrutia
中科院分区：
文献类型：
--
作者：
A. Araneda;F. Torrejón;M. Aguayo;Laura Torres;F. Cruces;M. Cisternas;R. Urrutia
西班牙和智利探险家从十七世纪末到二十世纪初提供的文件中描述了圣拉斐尔湖过去的冰瓣行为。这些记录始于公元 1675 年，当时气候温和，可能与现在相似。那时，冰川被限制在山谷内，没有穿透拉古纳。冰川在 19 世纪显着前移，并可能在公元 1875 年左右的“小冰河时代”达到最大位置。历史资料表明，与 29 年前的情况相比，公元 1904 年冰川略有后退。历史资料表明，18世纪至19世纪圣拉斐尔冰川的冷却期处于欧洲“小冰河时代”的时间窗口内。这项工作为智利南部发生的这一事件提供了独立、直接的历史证据。
Past ice lobe behaviour at Laguna San Rafael is described in documents provided by Spanish and then Chilean explorers from the late seventeenth to the early twentieth centuries. These records begin in AD 1675, when temperate conditions, probably similar to those at present, prevailed. At that point, the glacier was confined within its valley, not penetrating the Laguna. The glacier advanced noticeably during the nineteenth century and probably reached a maximum position for the `Little Ice Age' around AD 1875. The historical sources suggest a slight retreat in AD 1904 in relation to the conditions prevailing 29 years earlier. The historical data show that the eighteenth to nineteenth century cooling period at San Rafael glacier was within the temporal window of the European `Little Ice Age'. This work provides independent, direct historical evidence for the occurrence of this event in southern Chile.