| 查看: 491 | 回复: 4 | |||
[交流]
Everyday News-A Whale Tête-à-Tête in the Northwest Passage
|
The impassable glaciers of the Northwest Passage through Canada drove 19th century European explorers to madness, but decades of global warming have created a nice passageway for whales to rush in where adventurers feared to tread. Researchers studying bowhead whale migration patterns searched through 10 years of data from 122 whales they had tagged with satellite transmitters. They spotted one adventurous young whale entering the passage from the east in 2002, and another from the west in 2006. But each time, sea ice blocked both whales from crossing entirely. Then in September 2010, a summer when sea ice was extremely low, two male whales entered the passage from opposite directions, and for a short time their paths overlapped. For about 2 weeks, they were within 130 km of each other, only 48 hours of swimming for a whale, the researchers report today in Biology Letters. Although their rendezvous shows that it's possible for a whale to cross the passage some summers, both of these intrepid explorers went home soon after. Apparently they were just saying hello to a population they hadn't seen for millennia. |
回复此楼» 猜你喜欢
296求调剂
已经有5人回复
-
0703化学调剂
已经有13人回复
-
085600材料与化工 求调剂
已经有15人回复
-
085700资源与环境308求调剂
已经有4人回复
-
生物学调剂招人！！！
已经有4人回复
-
0817 化学工程 299分求调剂 有科研经历 有二区文章
已经有17人回复
-
一志愿武汉理工材料工程专硕调剂
已经有5人回复
-
0856调剂，是学校就去
已经有7人回复
-
申博26年
已经有3人回复
-
一志愿吉林大学材料学硕321求调剂
已经有10人回复
★
小木虫(沙发+1，金币+0.5):恭喜抢个沙发，再给个红包
小木虫(沙发+1，金币+0.5):恭喜抢个沙发，再给个红包
 |
2楼2011-09-24 09:13:52
3楼2011-09-24 09:14:11
4楼2011-09-24 10:37:20
|
|
5楼2011-09-24 18:44:17
