单词 | 深海 |
释义 | 深海 So much went wrong technically and managerially at Deepwater that should not have done. Deep-sea fish and whales have little or no light by day or by night. Food can be scarce in the deep waters off Australia. So is Petrobras of Brazil, which operates more deepwater drilling rigs than any other oil company. And because of their size and few predators, whales and other big marine vertebrates can efficiently export carbon from the surface waters to the deep sea. There’s a heated debate among oceanographers over whether the next generation of deep exploration should be performed by robots, humans or both. The layers of mud and microbes help geologists understand forces at work on the ocean bottom deep in the past. Endangered sea turtles now swim the same water where, three months ago, humans rescued them from the toxic soup created by the BP spill spewing oil deep below. Research by Smith and his coauthors has shown that the amount of food reaching the deep sea varies dramatically over time. While many species harvested for seafood come from near shore waters, others can be found in the deep ocean. All that gas buoys up through the sediments and into the ocean, heating up the deep waters. He struck at one with his knife lashed to the end of an oar and watched the scavenger sliding down into deep water. Too many mysteries of the deep remain unexplained and, anyway, no country turns down a chance to enlarge its sovereignty. We looked at the walkway and saw people waving towels at us, then we looked further out to sea and saw what looked like blood, and a man's leg come up. We have a responsibility to learn all we can about these amazing animals and to protect them from the greatest danger to life in the deep: the human species. We've ordered inspections of all deepwater operations in the Gulf of Mexico. Unrelenting darkness is another barrier to exploring the deep. Sunlight penetrates seawater to a depth of only a few hundred feet. Some in the industry have said a company with such a strong focus on deepwater drilling should have had much better contingency plans for dealing with an underwater oil leak at this depth. BP has been particularly vulnerable to criticism because among the large oil companies it is by far the biggest player in deepwater oil exploration. Changes in deep-sea carbon cycling are not considered in most climate models, an oversight that the authors believe should be corrected. This is why so many deep-sea fishes have such big teeth. That is why the outlook for the big, slow- growing creatures of the deep, some of which travel long distances, is so bleak. This means they could be vitally important, like arteries providing life to the deep ocean. The oil slick resulted from an accident at the Deepwater Horizon rig in the Gulf of Mexico. The new approach covers all the major deep sea whales. Higher prices of almost all metals, as well as oil and gas, have transformed the economics of mining the deeps. Chris Reddy, a marine chemist, regretted that scientists had not been able to get more samples of the deep-sea dispersant- oil mixture. |
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