These areas have particularly low concentrations of iron, and oceanographers hypothesize that this shortage of iron prevents plankton from thriving.

这些地区的铁含量特别低，海洋学家推测，铁的缺乏阻碍了浮游生物的繁殖。

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This idea was modified in the late twentieth century, when geologists and oceanographers examining oceanic sediment found fossil evidence of warming and cooling of the oceans.

在20世纪后期，地质学家和海洋学家在研究海洋沉积物时发现了能够证明海洋变暖和变冷的化石，并修正了这一观点。

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When oceanographers study these samples, they can see changes in the carbon cycle during the PETM.

当海洋学家研究这些样本时，他们可以看到在古新世-始新世极热时期碳循环的改变。

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This efficient data management network provides free automatic quality controlled data to marine scientists and oceanographers worldwide.

UNESCO: Intergovernmental Oceanographic Commission (IOC)

Using Google Earth, some 1, 500 oceanographers, biologists, meteorologists and enthusiasts are following the expedition.

WSJ: A New Wave of Ocean Explorers | Marvels

We accompany oceanographers in inflatable boats as they collect data on the warming water currents in the fjord.

CNN: Greenland's frozen landscape warming up