...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Canadian Water Resources Journal >The Causes, Progression and Magnitude of the 1826 Red River Flood in Manitoba
【24h】

The Causes, Progression and Magnitude of the 1826 Red River Flood in Manitoba

机译：1826年曼尼托巴省红河洪水的成因，程度和大小

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this paper we review historical and paleoenvironmental evidence related to the 1826 Red River flood in Manitoba. In 1825, significant spring flooding and persistently high water levels in early autumn filled natural storage in the Red and Assiniboine river basins to capacity. Although daily historical records do not suggest that the winter of 1825―26 was exceptionally cold or snowy, other comments note an unusually deep snow pack near the Red River Settlement and throughout the southern basin. Historical accounts and paleoclimatic data document a cold, snowy April and an exceptionally late spring throughout much of central North America. The 1826 flood was exacerbated by abundant rainfall during the rising phase and was, according to historical and dendrochronological evidence, the largest event since at least C.E. 1648. The estimated peak flow for 1826 is approximately 6,370 m~3/s (40% greater than the 1997 flood), which exceeds the current design capacity of flood protection for Winnipeg. Historical accounts in western Manitoba and anatomical signatures in alluvial logs suggest that the lower Assiniboine (downstream of Brandon) produced an exceptional flow in 1826, equivalent to perhaps 20% of the Red River's upstream discharge. Reports of extremely strong, persistent winds from the south coincident with peak stage suggest that wind set―up may be an important factor that should be considered in future hydraulic studies.
机译：在本文中，我们回顾了与1826年曼尼托巴红河洪水有关的历史和古环境证据。 1825年，春季大洪水和初秋持续的高水位使Red和Assiniboine流域的自然存储量达到极限。尽管每天的历史记录并不表明1825-26年的冬天异常寒冷或多雪，但其他评论却指出，在红河聚居地附近以及整个南部盆地，都有异常深的积雪。历史记录和古气候资料记录了整个北美中部大部分地区寒冷，多雪的四月和异常晚的春季。 1826年洪水在上升阶段因大量降雨而加剧，根据历史和年代学证据，这是至少自1648年以来的最大事件。1826年的峰值流量估计约为6,370 m〜3 / s（比40年大40％）。 1997年的洪水），超出了当前温尼伯防洪设计的能力。曼尼托巴西部地区的历史记载和冲积测井的解剖学特征表明，较低的阿西尼博因河（布兰登下游）在1826年产生了异常的流量，可能相当于红河上游流量的20％。来自南方的强烈强持续风与高峰期相一致的报道表明，风的建立可能是未来水力研究中应考虑的重要因素。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号