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Undersea Cable Could Revolutionize Oceanography
This past April, there was a big volcanic1 eruption2 in America’s Pacific Northwest. If you missed it, you're not alone.
It happened under the ocean off the northern Oregon coast. Since then, several research ships have sent unmanned submersibles down into the undersea crater3 to videotape lava4 flows and spewing vents5.
In a few years, you should be able to watch such events live on the Internet 24/7. Thanks to a new underwater fiber6 optic cable, a new worldwide ocean observatory7 now under construction that could revolutionize our understanding of the deep sea environment.
Bringing the ocean to you
"This is a big deal. Suddenly the ocean is going to be accessible to people. We can't take them all out there deep in the ocean, but we can bring the ocean to them," says University of Washington oceanography John Delaney of his very expensive and ambitious high-tech8 baby.
Delaney a driving force behind an effort to wire the Pacific Ocean off the Oregon and Washington coasts for science. Delaney says the vision for this cable and instrument array dates back 20 years.
Delaney recalls bemoaning9 the expense and difficulty of gathering10 data in the deep ocean. Then the conversation turned to new undersea fiber optic cables.
"Bingo! We said, 'Let's do something about this,'" he says. "That was a long time ago."
Undersea network
Now the vision is becoming a reality. A commercial cable-laying ship has just finished spooling11 out 900 kilometers of fiber optic cable. One strand12 starts from Pacific City, Oregon, goes out to the edge of the continental13 shelf and then loops down toward Newport, Oregon.
Another line heads far out to sea to an underwater volcano. Separately, scientists on the U.S. East Coast are anchoring test buoys15 for another advanced instrument network. This array off New England, south of Cape16 Cod17, will be connected to shore by satellite and wireless18 links.
Scientists plan to attach dozens of instruments to the cables and buoys. Seismometers could give us a better idea about the offshore19 earthquake threat. Other sensors21 will track fish migration22, ocean acidification, weather trends, and dissolved oxygen, just to name a few. Underwater microphones could capture whale calls, like these hard-to-find blue whales recorded earlier.
Real-time Internet data
Delaney says the undersea network is designed to funnel23 a fire hose of open source, real-time data to the Internet, 24/7.
"So people that are interested - and I'm hoping it will be a growing number of people - will have the ability to tap into what we're doing. They'll be able to watch over our shoulders electronically as we discover things, as we make mistakes," he says with a laugh.
One of the cool things to eavesdrop24 on might be an undersea volcano called the Axial Seamount. It is 480 kilometers out in the ocean due west of Astoria, Oregon. In August, Delaney steamed out there with co-chief scientist Debbie Kelley. They scouted25 hydrothermal vents to wire up.
"Many people now think the volcanoes on the seafloor are where life originated on the planet," says Kelley. "One of the things we're going to see later on the dive are these vents called snowblower vents, which is where there is warm water issuing out of the seafloor at about 30 degrees Centigrade. With it, it is entraining novel microorganisms."
Monitoring ocean trends
This summer, Oregon State University scientists and engineers are also on the water. They’re testing instrument packages and buoys that will connect in part to the fiber optic network. OSU's Bob Collier says it's fair to say the data array will revolutionize oceanography.
"With this cable we really are able to provide a whole new way of looking at the ocean," says Collier, "which we honestly have never had before."
The West Coast instrument network falls under the umbrella of a larger project with locations in other oceans. It's called the Ocean Observatories26 Initiative. In addition to the buoy14 network under development along the U.S. East Coast, four additional sensor20 packages will be set up on moorings in the far northern and southern oceans.
They'll be in the Gulf27 of Alaska, near Greenland, in the Argentine basin in the south Atlantic, and southwest of Chile in the Pacific. Those remote, high-latitude instruments are designed to monitor ocean trends on a planetary scale.
U.S. taxpayers28 are footing the entire $400 million construction bill on the project through the National Science Foundation. The global network is supposed to be in full service in 2014.
1 volcanic | |
adj.火山的;象火山的;由火山引起的 | |
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2 eruption | |
n.火山爆发;(战争等)爆发;(疾病等)发作 | |
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3 crater | |
n.火山口,弹坑 | |
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4 lava | |
n.熔岩,火山岩 | |
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5 vents | |
(气体、液体等进出的)孔、口( vent的名词复数 ); (鸟、鱼、爬行动物或小哺乳动物的)肛门; 大衣等的)衩口; 开衩 | |
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6 fiber | |
n.纤维,纤维质 | |
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7 observatory | |
n.天文台,气象台,瞭望台,观测台 | |
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8 high-tech | |
adj.高科技的 | |
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9 bemoaning | |
v.为(某人或某事)抱怨( bemoan的现在分词 );悲悼;为…恸哭;哀叹 | |
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10 gathering | |
n.集会,聚会,聚集 | |
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11 spooling | |
n.络纱,络筒v.把…绕到线轴上(或从线轴上绕下来)( spool的现在分词 );假脱机(输出或输入) | |
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12 strand | |
vt.使(船)搁浅,使(某人)困于(某地) | |
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13 continental | |
adj.大陆的,大陆性的,欧洲大陆的 | |
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14 buoy | |
n.浮标;救生圈;v.支持,鼓励 | |
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15 buoys | |
n.浮标( buoy的名词复数 );航标;救生圈;救生衣v.使浮起( buoy的第三人称单数 );支持;为…设浮标;振奋…的精神 | |
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16 cape | |
n.海角,岬;披肩,短披风 | |
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17 cod | |
n.鳕鱼;v.愚弄;哄骗 | |
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18 wireless | |
adj.无线的;n.无线电 | |
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19 offshore | |
adj.海面的,吹向海面的;adv.向海面 | |
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20 sensor | |
n.传感器,探测设备,感觉器(官) | |
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21 sensors | |
n.传感器,灵敏元件( sensor的名词复数 ) | |
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22 migration | |
n.迁移,移居,(鸟类等的)迁徙 | |
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23 funnel | |
n.漏斗;烟囱;v.汇集 | |
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24 eavesdrop | |
v.偷听,倾听 | |
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25 scouted | |
寻找,侦察( scout的过去式和过去分词 ); 物色(优秀运动员、演员、音乐家等) | |
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26 observatories | |
n.天文台,气象台( observatory的名词复数 ) | |
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27 gulf | |
n.海湾;深渊,鸿沟;分歧,隔阂 | |
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28 taxpayers | |
纳税人,纳税的机构( taxpayer的名词复数 ) | |
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