Byobserving the lead accumulations in different parts of the arctic area.
通过观察北极不同地区的铅沉积量。
This past winter's negative phase of the Arctic Oscillation transported old ice (four, five, and more years old) from an area north of the Canadian Archipelago.
去年冬天北极这种负向振荡从加拿大群岛北部地区运来多年老海冰(四，五年或更多年的老海冰)。
The Russians, who control far more prospective drilling area in the Arctic Ocean than the United States and Canada combined, take a far different view.
俄罗斯人采取完全不同的看法，他们在北冰洋地区控制的潜在的可开采面积要比美国和加拿大合起来还要大的多。
In just one year, the Arctic Ocean has lost an area of year-round ice cover the size of Texas.
一年之内，北冰洋就将失去面积相当于德克萨斯州的冰川。
Arctic sea ice has retreated so much that in September 2007 it covered an all-time low area of 4.14m km sq, surpassing by 23% the previous all-time record set in September 2005.
2007年9月份北极的冰川覆盖面积降到了历史最低点即414万平方千米比2005年9月的前记录少了整整23%。
The Arctic fox can survive some of the most extreme temperatures on the planet with its thick fur and low surface-area-to-volume ratio.
北极狐拥有厚厚的皮毛，身体的散热面积较小。即使在一些极端的温度下，也能顽强地生存。
Measures of Arctic sea ice this year show its area is the second lowest on record, and its volume is the lowest.
对北极海冰的检测表明，今年海冰面积下降到记录以来倒数第二，其体积则已经减少到有记录以来最小。
Of course, that's easier said than done; the Arctic is a forbidding, isolated area, short of people and encased in ice much of the year.
当然，这说起来容易，做起来难。北极是块离我们遥远的禁地，人烟稀少，一年中大部分时间是冰封雪盖。
An ice island with an area of 100 square miles has broken off from one of Greenland's two main glaciers in what scientists say is the biggest such event in the Arctic in nearly 50 years.
一块面积达到100平方英里的浮冰岛已经从格陵兰两大冰川之一崩离，用科学家的话来说，这块浮冰岛的崩落是近50年北极同类事件中最大的一个。
At the same time, warm Pacific Ocean water is pulsing through the Bering Strait into the Arctic basin, helping melt a large area of sea ice between Alaska and eastern Siberia.
同时，温暖的太平洋的海水正在漫过白令海峡涌向北冰洋流域，这使阿拉斯加和东西伯利亚间的海冰融化得更多。
The study, based on satellite measurements, is among the first to estimate the thickness of the Arctic ice, rather than just its surface area.
这项基于卫星测量的研究，首次将对北极冰盖厚度的评估作为研究对象，而不是像以往的研究一样，只是对冰盖的表面积进行研究。
Earlier this month, us scientists reported that annually forming sea in the Arctic region covered roughly the same area as in previous years, but had significantly thinned.
本月初，美国科学家报告，北极地区年度新生海域面积大致上与前几年相同，但明显变稀薄了些。
For the past three years, the vast cap of shining-white ice covering the Arctic has melted away in summer to an area that would have been unbelievable just a decade ago.
过去三年内，在北极地区白皑皑冰盖已经在夏季大量地消减。
Arctic temperatures have increased at almost twice the global average rate in the last 100 years; 70,000 square kilometres of sea ice (an area about the size of Ireland) is disappearing annually.
北极的温度上升率在过去的100年中比全球温度的上升率高出了一倍，每年都有7万平方公里的冰海消失，而这一面积相当于整个爱尔兰的面积。
Arctic temperatures have increased at almost twice the global average rate in the last 100 years; 70, 000 square kilometres of sea ice (an area about the size of Ireland) is disappearing annually.
北极的温度上升率在过去的100年中比全球温度的上升率高出了一倍，每年都有7万平方公里的冰海消失，而这一面积相当于整个爱尔兰的面积。
How will the area around the Arctic Circle in Norway be affected by the Atlantic stretch tsunami?
挪威北极圈的周围地区将如何受到由于大西洋延伸而产生的海啸影响？
The service also recently completed charting work in the Nanisivik area near Arctic Bay, where there are plans to build a military deep sea port.
该局最近还完成了靠近北极湾城的纳尼西维克区域的海图绘制工作，有计划在那里建立一个军事深海港口。
Demark says it's planning to lay claim to a large area of the Arctic seabed including the North Pole, a region thought to be rich in oil and gas.
丹麦表示，他们正计划对北极圈海床大范围地区宣示主权，包括北极点在内。据称，北极海底蕴藏着非常丰富的石油和天然气。
The summer ice loss in the Arctic is now equal to an area the size of Alaska, Texas, and the state of Washington combined.
北极夏季冰川的融化现在等同于阿拉斯加，德克萨斯和华盛顿州相加的区域大小。
Besides dropping in on Santa, visitors to Lapland can enjoy trekking and skiing in Lemmenjoki Park with its dreamlike arctic landscape, dense forests, and free wilderness huts that dot the area.
除了顺道拜访圣诞老人，前往拉普兰的游客也可以在“拉门·乔基公园”享受徒步旅行与滑雪之乐，并欣赏它如梦似幻的北极圈风光、蓊郁的森林和这片辽阔荒原上星罗棋布的小屋。
It is evident positive relative between the Arctic sea ice and the polar vortex area, yet the relation between the polar vortex area and intensity is so complex.
北极海冰面积和北半球极涡面积为明显的正相关，而北半球极涡面积和极涡强度之间的关系就较为复杂。
Denmark says it's planning to lay claim to a large area of the Arctic seabed including the North Pole, a region thought to be rich in oil and gas.
丹麦表示，他们计划对北极圈海床大范围地区提出主权要求，包括北极点在内，据称此处石油和天然气丰富。
Besides dropping in on Santa, visitors to Lapland can enjoy trekking and skiing in Lemmenjoki Park with its dreamlike arctic landscape, dense forests, and free wildeness huts that dot the area.
除了顺道拜访圣诞老人，前往拉普兰的游客也可以在拉门乔基公园享受徒步旅行与滑雪之乐，并欣赏它如梦似幻的北极圈风光、蓊郁的森林以及这片辽阔荒原上星罗棋布的小屋。
A region of northern Alaska between the Brooks Range and the Arctic Ocean. There are oil and natural gas reserves in the area around Prudhoe Bay.
北阿拉斯加的地区，在布鲁克斯山脉和北冰洋之间。普拉德霍湾附近有石油和天然气储藏。
Arctic ice reached a larger maximum area this winter than in the last few years, scientists say, but the long-term trend still shows it declining.
科学家们说，去年冬天北极冰层的最大面积比过去几年要大一些，但是长期趋势还是显示它在衰减。
But some will define it on the basis of air or sea temperature, the native territories of the Arctic indigenous peoples, or the area north of where trees stop growing.
北极就是北极点附近的地区——和南极就是南极点附近的地区刚好遥相呼应北极的定义有很多种，一般而言，是指北极圈内或附近的区域。
But some will define it on the basis of air or sea temperature, the native territories of the Arctic indigenous peoples, or the area north of where trees stop growing.
北极就是北极点附近的地区——和南极就是南极点附近的地区刚好遥相呼应北极的定义有很多种，一般而言，是指北极圈内或附近的区域。
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