Welcome to Sea and Sky's Oceanography News. Here you can find links to the latest ocean news headlines in the topic of oceanography. Click on any yellow title below to view the full news article. The news article will open in a new browser window. Simply close the browser window when you are finished reading the article to return to the news article listing. You can use the "Click for More" link to go to a page with more news headlines.
|Signs of ancient mega-tsunami could portend modern hazard|
Scientists working off west Africa in the Cape Verde Islands have found evidence that the sudden collapse of a volcano there tens of thousands of years ago generated an ocean tsunami that dwarfed anything ever seen by humans. The researchers say an 800-foot wave engulfed an island more than 30 miles away. The study could revive a simmering controversy over whether sudden giant collapses present a realistic hazard today around volcanic islands, or even along more distant continental coasts.
Publ.Date : Fri, 02 Oct 2015 14:49:03 EDT
Researchers in Northwestern Hawaiian Islands finds highest rates of unique marine species
Scientists returned from a 28-day research expedition aboard NOAA Ship Hi'ialakai exploring the deep coral reefs within Papahanaumokuakea Marine National Monument in the Northwestern Hawaiian Islands. During the trip, scientists recorded numerous species of marine life never before seen, including a possible new species of seahorse, and a sea star not previously found in Hawaii.
Publ.Date : Thu, 01 Oct 2015 15:41:11 EDT
A balanced diet is good for corals too, study finds
A nutrient-rich, balanced diet is beneficial to corals during stressful thermal events, new research shows. The study concluded that the particular nutrient balance in seawater is what matters most.
Publ.Date : Thu, 01 Oct 2015 15:39:33 EDT
Global warming can alter shape of the planet, as melting glaciers erode the land
Climate change is causing more than just warmer oceans and erratic weather. According to scientists, it also has the capacity to alter the shape of the planet.
Publ.Date : Thu, 01 Oct 2015 14:22:22 EDT
Gulf Stream ring water intrudes onto continental shelf like 'Pinocchio's nose'
Ocean robots installed off the coast of Massachusetts have helped scientists understand a previously unknown process by which warm Gulf Stream water and colder waters of the continental shelf exchange. The process occurs when offshore waters, originating in the tropics, intrude onto the Mid-Atlantic Bight shelf and meet the waters originating in regions near the Arctic. This process can greatly affect shelf circulation, biogeochemistry and fisheries.
Publ.Date : Wed, 30 Sep 2015 14:01:37 EDT
Earthquake rupture halted by seamounts
Experts expected for some time that one of the next mega earthquakes occurs off northern Chile. But when the earth did tremble around the northern Chilean city of Iquique in 2014, the strength and areal extent of shaking was much smaller than anticipated. Geologists now publish a possible explanation.
Publ.Date : Wed, 30 Sep 2015 07:31:24 EDT
Arctic sea ice still too thick for regular shipping route through Northwest Passage
Despite climate change, sea ice in the Northwest Passage (NWP) remains too thick and treacherous for it to be a regular commercial Arctic shipping route for many decades, according to new research. Prior to this research, there was little information about the thickness of sea ice in the NWP. Next to ice coverage and type, sea ice thickness plays the most important role in assessing shipping hazards and predicting ice break-up.
Publ.Date : Tue, 29 Sep 2015 12:54:37 EDT
New report details 10 years of improvements in Gulf of Mexico observation systems
A new report from the Gulf of Mexico Coastal Ocean Observing System Regional Association details the first 10 years of the nonprofit organization's work to improve access to ocean observing data that helps to protect and preserve the Gulf and its residents.
Publ.Date : Tue, 29 Sep 2015 11:32:15 EDT
America has fallen behind on offshore wind power
The United States has fallen behind on offshore wind power, experts say. Their findings show that while offshore wind turbines have been successfully deployed in Europe since 1991, the U.S. is further from commercial-scale offshore wind deployment today than it was in 2005.
Publ.Date : Tue, 29 Sep 2015 11:30:49 EDT
Flood risk on rise for New York City, New Jersey coast, study finds
For the first time, climate researchers compared both sea-level rise rates and storm surge heights in prehistoric and modern eras and found that the combined increases of each have raised the likelihood of a devastating 500-year flood occurring as often as every 25 years.
Publ.Date : Mon, 28 Sep 2015 15:58:55 EDT
Highest tides for 18.6 years set for the UK this week
Many places along the UK coastline will experience the highest tide for 18.6 years between the 19th and 30th of September, as a result of the co-incidence of a series of astronomical factors.
Publ.Date : Mon, 28 Sep 2015 15:27:42 EDT
Scientists solve the riddle of deep ocean carbon
A crucial process has been identified to explain the reason why dissolved organic carbon (DOC) levels in the deep oceans are constant despite a continuous supply from the surface ocean.
Publ.Date : Mon, 28 Sep 2015 12:47:12 EDT
How ocean circulation changed atmospheric CO2
Changes to overturning circulation in the Southern Ocean as a result of temperatures over Antarctica play key role in carbon uptake by the oceans.
Publ.Date : Mon, 28 Sep 2015 12:34:34 EDT
Gone fishing: Loss of ocean predators has impact on climate change strategies
As Australia engages in debate over shark culling, new research says unsustainable harvesting of larger fish will affect how we tackle climate change. A group of scientists warns the loss of top order predators through excessive culling or over-fishing has serious environmental ramifications.
Publ.Date : Mon, 28 Sep 2015 12:33:18 EDT
Extreme Pacific sea level events to double in future
Many tropical Pacific island nations are struggling to adapt to gradual sea level rise stemming from warming oceans and melting ice caps. Now they may also see much more frequent extreme sea level swings. The culprit is a projected behavioral change of the El Niño phenomenon and its characteristic Pacific wind response, according to recent computer modeling experiments and tide-gauge analysis.
Publ.Date : Fri, 25 Sep 2015 14:27:00 EDT
How fossil corals can shed light on Earth's past climate
Researchers have used radiocarbon measured in deep-sea fossil corals to shed light on carbon dioxide levels during Earth's last deglaciation. Fossil corals have the unique advantage that they can be precisely dated by radiometric uranium-series dating, giving an age scale that can be directly compared to the ice core records.
Publ.Date : Thu, 24 Sep 2015 15:14:09 EDT
In the dark polar winter, the animals aren't sleeping
You might expect that little happens in the Arctic Ocean during the cold and dark winter. But that just isn't so, according to researchers who have sampled the activities of many different species during three consecutive winters in Kongsfjorden, Svalbard.
Publ.Date : Thu, 24 Sep 2015 14:25:23 EDT
Tiny plankton can play a major role in carbon dioxide storage in the oceans
Tiny zooplankton animals, each no bigger than a grain of rice, may be playing a huge part in regulating climate change, research has found.
Publ.Date : Thu, 24 Sep 2015 08:39:06 EDT
Cold snap: Climate cooling and sea-level changes caused crocodilian retreat
Fluctuating sea levels and global cooling caused a significant decline in the number of crocodilian species over millions of years, according to new research. In the future, the researchers suggest that a warming world caused by global climate change may favour crocodylian diversification again.
Publ.Date : Thu, 24 Sep 2015 08:24:52 EDT
Earth's oceans show decline in microscopic plant life
The world's oceans have seen significant declines in certain types of microscopic plant-life at the base of the marine food chain, according to a new NASA study. The research is the first to look at global, long-term phytoplankton community trends based on a model driven by NASA satellite data.
Publ.Date : Wed, 23 Sep 2015 13:42:09 EDT