Ocean’s living carbon pumps: When viruses attack giant algal blooms, global carbon cycles are affected

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By some estimates, almost half of the world's organic carbon is fixed by marine organisms called phytoplankton -- single-celled photosynthetic organisms that account for less than one percent of the total photosynthetic biomass on Earth. When giant algal blooms get viral infections, global carbon cycles are affected, scientists have now discovered....

Massive debris pile reveals risk of huge tsunamis in Hawaii

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A mass of marine debris discovered in a giant sinkhole in the Hawaiian islands provides evidence that at least one mammoth tsunami, larger than any in Hawaii's recorded history, has struck the islands, and that a similar disaster could happen again, new research finds. Scientists are reporting that a wall of water up to nine meters (30 feet) high surged onto Hawaiian shores about 500 years ago. A 9.0-magnitude earthquake off the coast of the Aleutian Islands triggered the mighty wave, which left behind up to nine shipping containers worth of ocean sediment in a sinkhole on the island of Kauai....

Breathing sand: New measurement technique detects oxygen supply to bottom of North Sea

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New analytical methods show for the first time, how the permeable, sandy sediment at the bottom of the North Sea is supplied with oxygen and which factors determine the exchange. Based on the detailed investigation and new measurement technology, the turnover of organic matter and nutrients at the sea floor as well as future changes within the dynamic ecosystem can be better assessed....

NASA begins sixth year of airborne Antarctic ice change study

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NASA is carrying out its sixth consecutive year of Operation IceBridge research flights over Antarctica to study changes in the continent's ice sheet, glaciers and sea ice. This year's airborne campaign, which began its first flight Thursday morning, will revisit a section of the Antarctic ice sheet that recently was found to be in irreversible decline....

Impact of offshore wind farms on marine species

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Offshore wind power is a valuable source of renewable energy that can help reduce carbon emissions. Technological advances are allowing higher capacity turbines to be installed in deeper water, but there is still much unknown about the effects on the environment. Scientists have now reviewed the potential impacts of offshore wind developments on marine species and make recommendations for future monitoring and assessment as interest in offshore wind energy grows around the world....

Meet Tim Osborn, Navigation Manager

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In my job as a navigation manager, I work with a huge constituency of ports, navigation users, and communities, all of which are tied directly to the Gulf of Mexico and rely heavily on the products, resources, and services that NOAA provides.

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Microfossils reveal warm oceans had less oxygen

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Researchers are pairing chemical analyses with micropaleontology -- the study of tiny fossilized organisms -- to better understand how global marine life was affected by a rapid warming event more than 55 million years ago. Their findings are the subject of an article in the journal Paleoceanography....

Could sleeper sharks be preying on protected Steller sea lions?

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Pacific sleeper sharks, a large, slow-moving species thought of as primarily a scavenger or predator of fish, may be preying on something a bit larger -- protected Steller sea lions in the Gulf of Alaska. A new study has found the first indirect evidence that this cold-blooded shark that can grow to a length of more than 20 feet -- longer than a great white shark -- and may be an opportunistic predator of juvenile Steller sea lions....

NOAA 2015 Tide Tables are Available

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NOAA 2015 tide tables are now available. NOAA tide tables have been in production for more than 100 years and are used by both commercial and recreational mariners for safe navigation. Printed tide tables provide the user with tide and tidal current predictions in an easy-to-read format for a particular location.

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Dolphin ‘breathalyzer’ could help diagnose animal and ocean health

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Alcohol consumption isn't the only thing a breath analysis can reveal. Scientists have been studying its possible use for diagnosing a wide range of conditions in humans -- and now in the beloved bottlenose dolphin. One team describes a new instrument that can analyze the metabolites in breath from dolphins, which have been dying in alarming numbers along the Atlantic coast this year....