雅思听力材料分享：The Southern Ocean

雅思考试主要是通过对考生听、说、读、写四个方面英语能力的考核，综合测评考生的英语沟通运用能力，实现“沟通为本”的考试理念。对于雅思考生来说，也有很多考试难点和政策盲区需要帮助解答。今天雅思无忧网小编准备了雅思听力材料分享：The Southern Ocean，希望通过文章来解决雅思考生这方面的疑难问题，敬请关注。

　　雅思听力考试依然是雅思考试中的一大难关，众所周知，要想攻克雅思听力，并不是仅仅依靠深厚的听力基础就可以了。雅思听力不但要有深厚的功底，还要掌握关键的技巧，只有这样才能拿到理想分数，笑傲雅思考场。下面就来带大家学习一下雅思听力材料分享：The Southern Ocean，一起来看看吧!

　　Southern Ocean

　　The Southern Ocean (also known as the Great Southern Ocean, Antarctic Ocean, South Polar Ocean and Austral Ocean) comprises the southernmost waters of the World Ocean, generally taken to be south of 60°S latitude and encircling Antarctica. As such, it is regarded as the fourth-largest of the five principal oceanic divisions (after the Pacific, Atlantic, and Indian Oceans, but larger than the Arctic Ocean). This ocean zone is where cold, northward flowing waters from the Antarctic mix with warmer subantarctic waters.

　　Geographers disagree on the Southern Ocean's northern boundary or even its existence, with many considering the waters part of the Pacific, Atlantic, and Indian Oceans instead. Others regard the Antarctic Convergence, an ocean zone which fluctuates seasonally, as separating the Southern Ocean from other oceans, rather than the 60th parallel. Australian authorities regard the Southern Ocean as lying immediately south of Australia.

　　The International Hydrographic Organization (IHO) has not yet ratified its 2000 definition of the ocean as being south of 60°S. Its latest published definition of oceans dates from 1953; this does not include the Southern Ocean. However, the more recent definition is used by the IHO and others.

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