Oceanography News -- ScienceDaily Oceanography news. Learn about ocean currents, coastal erosion, sea level rising and other topics in physical oceanography.

  • Arctic wintertime sea ice extent is among lowest on record
    on March 23, 2018 at 6:13 pm

    Sea ice in the Arctic grew to its annual maximum extent last week, and joined 2015, 2016 and 2017 as the four lowest maximum extents on record, according to scientists. […]

  • Deep impact: Deep-sea wildlife more vulnerable to extinction than first thought
    on March 22, 2018 at 7:03 pm

    The existence of the unusual yeti crabs (Kiwaidae) -- a family of crab-like animals whose hairy claws and bodies are reminiscent of the abominable snowman -- since 2005, but already their future survival could be at risk. New Oxford University research suggests that past environmental changes may have profoundly impacted the geographic range and species diversity of this family. The findings indicate that such animals may be more vulnerable to the effects of human resource exploitation and climate change than initially thought. […]

  • When the Mediteranean Sea flooded human settlements
    on March 22, 2018 at 3:27 pm

    Around 7,600 years ago, the emergence of agricultural settlements in Southeastern Europe and subsequent progress of civilization suddenly came to a standstill. This was most likely caused by an abrupt sea level rise in the northern Aegean Sea. Researchers have now detected evidence of this in the fossils of tiny calcifying marine algae preserved in seafloor sediments. […]

  • Cutting greenhouse gas emissions would help spare cities worldwide from rising seas
    on March 21, 2018 at 4:16 pm

    Coastal cities worldwide would face a reduced threat from sea level rise if society reduced greenhouse gas emissions, with especially significant benefits for New York and other US East Coast cities, new research indicates. […]

  • Evidence for a giant flood in the central Mediterranean Sea
    on March 21, 2018 at 3:08 pm

    Marine scientists have uncovered evidence of one of the largest floods in Earth's history in the central Mediterranean seafloor. The flood, known as the Zanclean flood, is thought to have ended the Messinian Salinity Crisis (MSC), a period during which the Mediterranean Sea became partially dried up. […]

  • Hunting squid slowed by rising carbon levels
    on March 21, 2018 at 1:47 pm

    Scientists have found that high carbon dioxide levels cause squid to bungle attacks on their prey. Investigators said that the oceans absorb more than one-quarter of all the excess carbon dioxide (CO2) released into the atmosphere by humans and this uptake of additional CO2 causes seawater to become more acidic. […]

  • Seaweeds shelter calcifying marine life from acidifying oceans
    on March 21, 2018 at 1:26 pm

    Seaweeds create a chemical microenvironment at their surface, providing refuge for calcifying organisms that are at risk from decreasing oceanic pH, shows new research. […]

  • Pacific influences European weather
    on March 21, 2018 at 1:10 pm

    Sea surface temperature in the distant tropical Pacific can influence November weather in Europe. […]

  • Marine researchers say recent sea star wasting disease epidemic defies prediction
    on March 20, 2018 at 6:13 pm

    Beginning in 2013, a mysterious disease crippled sea star populations up and down the U.S. west coast. Over a matter of months, many sea star species died in record-breaking numbers, though the ochre sea star was among the hardest hit. Now, researchers have analyzed just how much the populations of this species have declined, but they have not yet determined what factors might be contributing to the epidemic. […]

  • Wind, sea ice patterns point to climate change in western Arctic
    on March 20, 2018 at 4:34 pm

    A major shift in western Arctic wind patterns occurred throughout the winter of 2017 and the resulting changes in sea ice movement are possible indicators of a changing climate, says a researcher. […]

  • Obtaining energy from marine currents
    on March 20, 2018 at 2:24 pm

    Researchers have developed procedures and designs to obtain energy from marine currents in areas of great depths optimizing the costs. […]

  • New deep reef ocean zone, the rariphotic, teeming with new fish species
    on March 20, 2018 at 12:43 pm

    Diving down below the range of scuba in the Curasub, Smithsonian deep reef explorers discovered a new world where roughly half of the fish had no names. They are calling it the rariphotic. […]

  • Geoengineering polar glaciers to slow sea-level rise
    on March 19, 2018 at 6:45 pm

    Targeted geoengineering to preserve continental ice sheets deserves serious research and investment, argues an international team of researchers. Without intervention, by 2100 most large coastal cities will face sea levels that are more than three feet higher than they are currently. […]

  • Glacier mass loss: Past the point of no return
    on March 19, 2018 at 4:42 pm

    Researchers show in a recent study that the further melting of glaciers cannot be prevented in the current century -- even if all emissions were stopped now. However, due to the slow reaction of glaciers to climate change, our behavior has a massive impact beyond the 21st century: In the long run, five hundred meters by car with a mid-range vehicle will cost one kilogram of glacier ice. […]

  • Arctic sea ice becoming a spring hazard for North Atlantic ships
    on March 19, 2018 at 3:57 pm

    More Arctic sea ice is entering the North Atlantic Ocean than before, making it increasingly dangerous for ships to navigate those waters in late spring, according to new research. […]

  • Preventing hurricanes using air bubbles
    on March 19, 2018 at 1:10 pm

    Many people have tried to find ways of preventing hurricanes before they make landfall, resulting in the loss of human lives. Researchers believe that the answer lies in cold bubbles. […]

  • Wandering greenhouse gas
    on March 16, 2018 at 4:11 pm

    On the seafloor of the shallow coastal regions north of Siberia, microorganisms produce methane when they break down plant remains. If this greenhouse gas finds its way into the water, it can also become trapped in the sea ice that forms in these coastal waters. […]

  • Reefs help protect vulnerable Caribbean fish from climate change
    on March 16, 2018 at 2:03 pm

    New research suggests that larger reef areas may help protect the Caribbean's coral reef fish communities from the impacts of ocean warming. […]

  • Ending overfishing would stop the population declines of endangered bycatch species about half the...
    on March 15, 2018 at 7:54 pm

    A study finds that ending overfishing would stop the population declines of endangered bycatch species about half the time. […]

  • Half a degree more global warming could flood out 5 million more people
    on March 15, 2018 at 3:06 pm

    A new study finds that by 2150, the seemingly small difference between a global temperature increase of 1.5 and 2.0 degrees Celsius would mean the permanent inundation of lands currently home to about 5 million people, including 60,000 who live on small island nations. […]

  • Coral reef experiment shows: Acidification from carbon dioxide slows growth
    on March 14, 2018 at 6:50 pm

    Ocean acidification will severely impair coral reef growth before the end of the century if carbon dioxide emissions continue unchecked. The paper represents the first ocean acidification experiment in which seawater was made artificially acidic by the addition of carbon dioxide and then allowed to flow across a natural coral reef community. The acidity of the seawater was increased to reflect end-of-century projections if carbon dioxide from greenhouse gas emissions are not abated. […]

  • Marine ecologists study the effects of giant kelp on groups of organisms in the underwater forest...
    on March 14, 2018 at 6:49 pm

    When British naturalist Charles Darwin traveled to the Galapagos Islands in 1835, he took notice of the giant kelp forests ringing the islands. He believed that if those forests were destroyed, a significant number of species would be lost. These underwater ecosystems, Darwin believed, could be even more important than forests on land. […]

  • Greenland glaciers' varied vulnerability to melting
    on March 14, 2018 at 6:49 pm

    Using data from NASA missions observing Earth, researchers have created new maps of the bed topography beneath a score of glaciers in southeast Greenland, thereby gaining a much better understanding of why some are undergoing rapid retreat and others are relatively stable. […]

  • Exceptionally large amount of winter snow in Northern Hemisphere this year
    on March 14, 2018 at 1:27 pm

    The new Arctic Now product shows with one picture the extent of the area in the Northern Hemisphere currently covered by ice and snow. This kind of information, which shows the accurate state of the Arctic, becomes increasingly important due to climate change. […]

  • Decreased oxygen levels could present hidden threat to marine species
    on March 14, 2018 at 1:23 pm

    Scientists have shown that creatures which develop in hypoxic (low oxygen) conditions in the marine environment could experience previously unseen hindered development, and become compromised as adults. […]

  • A starfish cold case reopens, climate change remains suspect
    on March 13, 2018 at 7:21 pm

    As ocean temperatures rise and oceanic diseases proliferate, species like sea stars struggle to survive, and scientists are looking for underlying causes. To bring clarity to the sea star disease problem, the scientists propose a new, broad nomenclature. […]

  • Warm summers could weaken ocean circulation
    on March 13, 2018 at 3:34 pm

    Deep convection in the North Atlantic is one of the key components of the large-scale ocean circulation. Based on long-term observations, scientists have now demonstrated the influence of increased surface freshening in summer on convection in the following winter. Enhanced surface freshening and warmer winters have shortened the duration of ocean convection in the last decade. […]

  • Ash from dinosaur-era volcanoes linked with shale oil, gas
    on March 13, 2018 at 2:17 pm

    Nutrient-rich ash from an enormous flare-up of volcanic eruptions toward the end of the dinosaurs' reign kicked off a chain of events that led to the formation of shale gas and oil fields from Texas to Montana. […]

  • First-annual sea-level report cards
    on March 12, 2018 at 7:54 pm

    Researchers are launching new web-based 'report cards' to monitor and forecast changes in sea level at 32 localities along the US coastline from Maine to Alaska. They plan to update the report cards in January of each year, with projections out to the year 2050. […]

  • West Coast waters returning to normal but salmon catches lagging
    on March 9, 2018 at 10:06 pm

    Ocean conditions off most of the US West Coast are returning roughly to average, after an extreme marine heat wave from about 2014 to 2016 disrupted the California Current Ecosystem and shifted many species beyond their traditional range, according to a new report from NOAA Fisheries' two marine laboratories on the West Coast. Some warm waters remain off the Pacific Northwest, however. […]