    如果两极冰川全部融化，世界地图会是什么样？（多图）目前全球海平面增长3mm -澳洲形成内陆湖，大的海岸城市消失，包括纽约，上海，悉尼都会消失 上次全球无冰是340万年前，当时鳄鱼都在北极游泳 原文 http://www.theage.com.au/environ ... 20131107-2x2p9.html It seems Charles Sturt, Thomas Mitchell and other early European explorers tramping the scorching deserts of Australia in search of an inland sea were a few thousand years too early. According to maps published by National Geographic, Australia will one day get an inland sea if global warming continues and melts the world’s ice caps and glaciers, lifting sea levels by about 70 metres. The US-based organisation said it would take about 5000 years for all the ice to melt, although impacts will hit coastal communities much sooner – and having an inland sea won’t be much consolation to Australians. National Geographic noted that the last time the earth was ice-free was 34 million years ago during the Eocene period, when alligators swam in Arctic swamps. An ice-free world would see present-day London underwater, the Netherlands and Denmark lost. Bangladesh, home to 160 million people,would no longer exist and land now home to 600 million Chinese would be submerged. The US would have a lot fewer states, with the east coast including Florida lost to the sea, the National Geographic maps show. The world’s ice caps, glaciers and permanent snow contain about 24 million cubic kilometres of water, according to the US Geological Survey. Antarctica and Greenland make up about 90 per cent of the total ice. |
