The 1789 Christmas Eve collision of the HMS Guardian with an iceberg in the southwest Indian Ocean

IF 2.5 4区 地球科学 Q2 GEOGRAPHY, PHYSICAL
Seelye Martin
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引用次数: 2

Abstract

Abstract In the evening of 24 December 1789, 2100 km southeast of Cape Town and after encountering three icebergs, the HMS Guardian under Captain Edward Riou collided with the submerged foot of a large iceberg. Despite severe damage to the ship and its abandonment by many of its crew and passengers, Riou sailed the hulk back to Cape Town, arriving on 22 February 1790. From present-day research and field studies, the formation of the foot in the collision is consistent with the above-freezing seawater temperatures inferred from Riou's commentary. Further, the observed 60 m iceberg height suggests that it calved from the Filchner Ice Shelf in the Weddell Sea. Comparison of the positions of Riou's icebergs with historic sightings, satellite observations and iceberg drift and fracture models also shows that they originated in the Weddell Sea and that their likelihood of occurrence in the collision region is small.
1789年圣诞节前夕,英国皇家海军“守护者”号在西南印度洋与一座冰山相撞
1789年12月24日晚,在开普敦东南2100公里处,爱德华·里欧船长驾驶的英国皇家海军卫士号在遇到三座冰山后,与一座巨大的冰山底部相撞。尽管这艘船遭到了严重的破坏,许多船员和乘客也抛弃了它,里欧还是将这艘船驶回了开普敦,于1790年2月22日抵达。从目前的研究和实地研究来看,碰撞中足部的形成与里欧评论中推断的高于冰点的海水温度是一致的。此外,观察到的60米冰山高度表明,它是从威德尔海的费尔奇纳冰架崩解出来的。将里欧冰山的位置与历史观测、卫星观测、冰山漂移和断裂模型进行比较,也表明它们起源于威德尔海,在碰撞区域发生的可能性很小。
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来源期刊
Annals of Glaciology
Annals of Glaciology GEOGRAPHY, PHYSICAL-GEOSCIENCES, MULTIDISCIPLINARY
CiteScore
8.20
自引率
0.00%
发文量
0
审稿时长
>12 weeks
期刊介绍: Annals of Glaciology publishes original scientific articles and letters in selected aspects of glaciology-the study of ice. Each issue of the Annals is thematic, focussing on a specific subject. The Council of the International Glaciological Society welcomes proposals for thematic issues from the glaciological community. Once a theme is approved, the Council appoints an Associate Chief Editor and a team of Scientific Editors to handle the submission, peer review and publication of papers.
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