A tool to evaluate accessibility due to sea-ice cover: a case study of the Weddell Sea, Antarctica

IF 1.8 4区地球科学 Q3 ENVIRONMENTAL SCIENCES

Antarctic Science Pub Date : 2022-02-01 DOI:10.1017/S0954102021000523

H. Pehlke, T. Brey, Rebecca Konijnenberg, K. Teschke

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引用次数: 1

Abstract

Abstract Sea ice is the major constraint on human activities in the Southern Ocean. Depending on a vessel's ice class, human mobility may be restricted or even prevented altogether by sea-ice conditions. This may imply limited access to research or monitoring stations, preferred fishing grounds or attractive tourist sites. Here, we introduce a statistical model that evaluates the sea-ice cover with two measures: 1) accessibility (i.e. the probability that a given area is navigable by vessels at a given time) and 2) repeated accessibility (i.e. the probability that a given area is navigable by vessels at a given time and again at least once within a defined timespan). We use daily sea-ice concentration data from 2002 to 2020 to demonstrate this tool and its functioning regarding the spatiotemporal variability of sea-ice cover in the wider Weddell Sea region. These findings reflect known characteristics of sea-ice distribution and dynamics in the Weddell Sea, confirming the functionality of our simple tool for determining repeated accessibility of certain areas. Such a tool may facilitate the planning of research and monitoring activities in the Southern Ocean, as well as in Arctic seas.

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一种评估海冰覆盖可达性的工具:以南极洲威德尔海为例

摘要海冰是制约南大洋人类活动的主要因素。根据船只的冰级，海冰条件可能会限制甚至完全阻止人类的行动。这可能意味着进入研究或监测站、首选渔场或有吸引力的旅游景点的机会有限。在这里，我们介绍了一个统计模型，该模型用两个指标来评估海冰覆盖：1）可达性（即给定区域在给定时间可供船只航行的概率）和2）重复可达性（例如给定区域在指定时间可供船舶航行，并在定义的时间跨度内至少一次）。我们使用2002年至2020年的每日海冰浓度数据来证明该工具及其在更广泛的威德尔海地区海冰覆盖时空变化方面的功能。这些发现反映了威德尔海海冰分布和动力学的已知特征，证实了我们确定某些区域重复可达性的简单工具的功能。这一工具可能有助于规划南大洋和北冰洋的研究和监测活动。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Antarctic Science 地学-地球科学综合

CiteScore

3.60

自引率

6.20%

发文量

审稿时长

3 months

期刊介绍： Antarctic Science provides a truly international forum for the broad spread of studies that increasingly characterise scientific research in the Antarctic. Whilst emphasising interdisciplinary work, the journal publishes papers from environmental management to biodiversity, from volcanoes to icebergs, and from oceanography to the upper atmosphere. No other journal covers such a wide range of Antarctic scientific studies. The journal attracts papers from all countries currently undertaking Antarctic research. It publishes both review and data papers with no limits on length, two-page short notes on technical developments and recent discoveries, and book reviews. These, together with an editorial discussing broader aspects of science, provide a rich and varied mixture of items to interest researchers in all areas of science. There are no page charges, or charges for colour, to authors publishing in the Journal. One issue each year is normally devoted to a specific theme or papers from a major meeting.