Oceanography

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

  • Tipping points are real: Gradual changes in CO2 levels can induce abrupt climate changes
    on June 23, 2017 at 2:04 pm

    During the last glacial period, within only a few decades the influence of atmospheric CO2 on the North Atlantic circulation resulted in temperature increases of up to 10 degrees Celsius in Greenland -- as indicated by new climate calculations. […]

  • Ocean predicts future northwestern European and Arctic climate
    on June 21, 2017 at 2:01 pm

    There is a clear potential for practical and useful predictions of northwestern European and Arctic climate based on the state of the ocean, new research indicates. […]

  • Wave beams mix and stir the ocean to create climate
    on June 20, 2017 at 3:42 pm

    Waves deep within the ocean play an important role in establishing ocean circulation, arising when tidal currents oscillate over an uneven ocean bottom. The internal waves generated by this process stir and mix the ocean, bringing cold, deep water to the surface to be warmed by the sun. Investigators now explain how to tell which way internal waves will go. The proposed theory unifies several previously understood explanations of wave propagation. […]

  • Great opportunities for marine research with new underwater vehicle
    on June 20, 2017 at 1:45 pm

    An autonomous underwater vehicle offers promise for advanced marine research use. This will make it possible to conduct detailed studies of the seabed at great depths and track the climate thousands of years back in time, say researchers. […]

  • Chemistry of sea spray particles linked for first time to formation process
    on June 19, 2017 at 7:15 pm

    For the first time, researchers have identified what drives the observed differences in the chemical make-up of sea spray particles ejected from the ocean by breaking waves. […]

  • Scientists throw light on mysterious ice age temperature jumps
    on June 19, 2017 at 4:58 pm

    Scientists believe they have discovered the reason behind mysterious changes to the climate that saw temperatures fluctuate by up to 15°C within just a few decades during the ice age periods. […]

  • Japanese slow earthquakes could shed light on tsunami generation
    on June 15, 2017 at 6:27 pm

    Understanding slow-slip earthquakes in subduction zone areas may help researchers understand large earthquakes and the creation of tsunamis, according to researchers who used data from instruments placed on the seafloor and in boreholes east of the Japanese coast. […]

  • Widespread snowmelt in West Antarctica during unusually warm summer
    on June 15, 2017 at 12:46 pm

    An area of West Antarctica more than twice the size of California partially melted in 2016 when warm winds forced by an especially strong El Nino blew over the continent. […]

  • Polar bears' declining mercury levels likely due to climate-related shifts
    on June 14, 2017 at 1:18 pm

    To understand how human activities are affecting the planet, scientists often study the health of animals in the wild. Now a new study finds that the levels of mercury in some polar bears are declining. But rather than heralding a drop in mercury in the environment, the decrease could indicate how climate change has led the animals to shift foraging habits, which has affected their diets and weight. […]

  • Large Canadian Arctic climate change study cancelled due to climate change
    on June 13, 2017 at 7:06 pm

    The Science Team of the Canadian Research Icebreaker CCGS Amundsen has cancelled the first leg of the 2017 Expedition due to complications associated with the southward motion of hazardous Arctic sea ice, caused by climate change. […]

  • Why microplastic debris may be the next big threat to our seas
    on June 9, 2017 at 1:27 pm

    More than five trillion pieces of plastic debris are estimated to be in our oceans, though many are impossible to see with the naked eye. […]

  • Lost ecosystem found buried in mud of southern California coastal waters
    on June 9, 2017 at 1:12 pm

    Paleontologists investigating the sea bed off California have discovered a lost ecosystem that for thousands of years had nurtured communities of scallops and shelled marine organisms called brachiopods. They had died off by the early 20th century, replaced by the mud-dwellling burrowing clams that inhabit this seabed today. […]

  • Scientists advancing hope for reefs in the Philippines
    on June 8, 2017 at 6:55 pm

    Researchers have returned from the Philippines with new species discoveries and deeper insights into threatened coral reef ecosystems. […]

  • Finding new homes won't help emperor penguins cope with climate change
    on June 7, 2017 at 7:12 pm

    Unlike other species that migrate successfully to escape the wrath of climate change, a new study shows that dispersal may help sustain global Emperor penguin populations for a limited time, but, as sea ice conditions continue to deteriorate, the 54 colonies that exist today will face devastating declines by the end of this century. […]

  • How the Arctic Ocean became saline
    on June 6, 2017 at 3:27 pm

    The Arctic Ocean was once a gigantic freshwater lake. Only after the land bridge between Greenland and Scotland had submerged far enough did vast quantities of salt water pour in from the Atlantic. […]

  • Why do Antarctic krill stocks fluctuate?
    on June 6, 2017 at 1:50 pm

    It is only six centimeters long, but it plays a major role in the Antarctic ecosystem: the small crustacean Euphausia superba (Antarctic krill). It's one of the world's most abundant species and the central diet of a number of animals in the Southern Ocean. For a long time, scientists have been puzzled why the size of krill stocks fluctuates so widely. […]

  • Marine reserves help mitigate against climate change, say scientists
    on June 5, 2017 at 7:23 pm

    Highly protected marine reserves can help mitigate against the impacts of climate change, a study by a team of international scientists has concluded. […]

  • Domes of frozen methane may be warning signs for new blow-outs
    on June 5, 2017 at 7:19 pm

    Several methane domes, some 500m wide, have been mapped on the Arctic Ocean floor. They may be signs of soon-to-happen methane expulsions that have previously created massive craters in a near-by area. […]

  • What caused the most toxic algal bloom ever observed in Monterey Bay?
    on June 5, 2017 at 7:02 pm

    In spring 2015, the West Coast of North America experienced one of the most toxic algal blooms on record. The bloom consisted of diatoms in the genus Pseudo-nitzschia, but researchers couldn't tell why these algae had become so toxic. A new article shows that, at least in Monterey Bay, this bloom became particularly toxic because of an unusually low ratio of silicate to nitrate in the waters of the bay. […]

  • Earliest human-made climate change took place 11,500 years ago
    on June 5, 2017 at 3:00 pm

    A new study has uncovered the earliest known geological indications of humanmade climate change from 11,500 years ago. […]

  • Stony corals more resistant to climate change than thought
    on June 1, 2017 at 7:19 pm

    Stony corals may be more resilient to ocean acidification than once thought, according to a Rutgers University study that shows they rely on proteins to help create their rock-hard skeletons. […]

  • Massive craters formed by methane blow-outs from the Arctic sea floor
    on June 1, 2017 at 7:18 pm

    Hundreds of massive, kilometer-wide craters on the ocean floor in the Arctic were formed by substantial methane expulsions, new research explains. […]

  • Seacoast roads under new threat from rising sea level
    on June 1, 2017 at 4:40 pm

    Some roads, as far as two miles from the shore, are facing a new hazard that currently cannot be seen by drivers -- rising groundwater caused by increasing ocean water levels. […]

  • Geoscientific evidence for subglacial lakes
    on June 1, 2017 at 12:22 pm

    During the last glacial period -- when the ice in the Antarctic was far thicker and extended further offshore than it does today -- it has been speculated that subglacial lakes existed beneath it. An international team of researchers has now successfully sampled the meter-thick sediment layers left behind by these lakes contemporary on the seafloor. […]

  • Restored ocean will alleviate poverty, provide jobs, and improve health, finds report
    on May 31, 2017 at 5:33 pm

    With climate change and social inequity addressed, restoring the ocean will help alleviate poverty, provide livelihoods, and improve the health of millions around the world. […]

  • Acidified ocean water widespread along North American West Coast
    on May 31, 2017 at 5:32 pm

    A three-year survey of the California Current System along the West Coast of the United States found persistent, highly acidified water throughout this ecologically critical nearshore habitat, with 'hotspots' of pH measurements as low as any oceanic surface waters in the world. […]

  • Study highlights formation of beachrock in resisting climate-induced sea level rises
    on May 31, 2017 at 2:26 pm

    Microorganisms play a crucial role in forming beachrock, a type of rock that forms on the beach and protects low-lying reef islands from erosion, a new study has revealed. […]

  • Previously, on Arctic warming
    on May 30, 2017 at 6:48 pm

    Arctic warming occurred in the early 20th century due to the warming phases -- 'interdecadal variability mode' -- of both the Pacific and Atlantic oceans, suggests new research. […]

  • More frequent extreme ocean warming could further endanger albatross
    on May 30, 2017 at 6:07 pm

    As scientists grapple with the behavioral, ecological and evolutionary impacts of extreme climatic events, new research articles explore what is known on the topic and pioneer new approaches to this challenging and rapidly expanding field of study. […]

  • Marine species distribution shifts will continue under ocean warming
    on May 27, 2017 at 3:06 pm

    Scientists using a high-resolution global climate model and historical observations of species distributions on the Northeast US Shelf have found that commercially important species will continue to shift their distribution as ocean waters warm two to three times faster than the global average through the end of this century. Projected increases in surface to bottom waters of 6.6 to 9 degrees F (3.7 to 5.0 degrees C) from current conditions are expected. […]