Oceanography News

Courtesy of Science Daily

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.

 

California rising?
Spatially corrected sea-level records for the Pacific coast indicate that uplift rates are overestimated by 40 percent, scientists report. Uplift is the vertical elevation of Earth's surface in response to plate tectonics.
Publ.Date : Thu, 03 Sep 2015 13:17:33 EDT

Ice sheets may be more resilient than thought, say scientists
Today's ice sheets may be more resilient to increased carbon dioxide levels than previously thought, a new study suggests. This work explored these very old conditions and found that sea level might not have risen as much as previously thought -- and thus may not rise as fast as predicted now.
Publ.Date : Thu, 03 Sep 2015 13:17:21 EDT

X-rays reveal fossil secrets
A sophisticated imaging technique has allowed scientists to virtually peer inside a 10-million-year-old sea urchin, uncovering a treasure trove of hidden fossils.
Publ.Date : Thu, 03 Sep 2015 09:24:15 EDT

Saving coral reefs depends more on protecting fish than safeguarding locations
Coral reef diversity 'hotspots' in the southwestern Indian Ocean rely more on the biomass of fish than where they are located, researchers say, a conclusion that has major implications for management decisions to protect coral reef ecosystems.
Publ.Date : Wed, 02 Sep 2015 13:51:25 EDT

Explaining crocodiles in Wyoming
Fifty million years ago, the Cowboy State was crawling with crocodiles. Fossil records show that crocs lounged in the shade of palm trees from southwestern Wyoming to southern Canada during the Cretaceous and Eocene.  Exactly how the middle of the North American continent -- far from the warming effects of the ocean -- stayed so temperate even in winter months has long eluded scientists.
Publ.Date : Wed, 02 Sep 2015 09:10:02 EDT

Ancient cold period could provide clues about future climate change
A well-known period of abrupt climate change 12,000 years ago occurred rapidly in northern latitudes but much more gradually in equatorial regions, a discovery that could prove important for understanding and responding to future climate change, scientists say.
Publ.Date : Wed, 02 Sep 2015 08:29:32 EDT

New international standards needed to manage ocean noise
As governments and industries expand their use of high-decibel seismic surveys to explore the ocean bottom for resources, experts from eight universities or organizations say new global standards and mitigation strategies are needed to minimize the amount of sound the surveys produce and reduce risks posed to vulnerable marine life, especially in formerly unexploited areas such as the Arctic Ocean and US Atlantic coast now targeted for exploration.
Publ.Date : Tue, 01 Sep 2015 20:48:21 EDT

Climate change will irreversibly force key ocean bacteria into overdrive
The levels of ocean acidification predicted for the year 2100 have been shown to cause an irreversible evolutionary change to a bacteria foundational to the ocean's food web.
Publ.Date : Tue, 01 Sep 2015 14:02:04 EDT

Methane observatories successfully deployed in the Arctic
Mysteries still abound about methane release from the ocean floor. Two state of the art observatories have been deployed offshore Svalbard this summer, to try and unveil the secrets of natural release of the climate gas.
Publ.Date : Tue, 01 Sep 2015 12:08:41 EDT

Understanding the deep sea is key to a sustainable blue economy
Once considered remote and inaccessible, commercial interest to exploit the deep sea is rising due to economic drivers and technology developments. However, exploitation activities in the deep sea remain highly contentious, particularly regarding the potential risks and environmental impacts associated with such activities. Deep-sea stakeholders have identified deficiencies in basic knowledge of deep-sea systems which could hinder ecosystem-based management of the deep sea and in turn limit the sustainability of the emerging deep blue economy.
Publ.Date : Tue, 01 Sep 2015 11:34:28 EDT

Plastic in 99 percent of seabirds by 2050
Researchers from CSIRO and Imperial College London have assessed how widespread the threat of plastic is for the world's seabirds, including albatrosses, shearwaters and penguins, and found the majority of seabird species have plastic in their gut.
Publ.Date : Mon, 31 Aug 2015 16:37:39 EDT

Evidence of ancient life discovered in mantle rocks deep below the seafloor
Ancient rocks harbored microbial life deep below the seafloor, reports scientists. This first-time evidence was contained in drilled rock samples of Earth's mantle -- thrust by tectonic forces to the seafloor during the Early Cretaceous period. The discovery confirms a long-standing hypothesis that interactions between mantle rocks and seawater can create potential for life even in hard rocks deep below the ocean floor.
Publ.Date : Mon, 31 Aug 2015 16:37:26 EDT

Sea temperature changes linked to mystery North Pacific ecosystem shifts
Researchers have long been puzzled by two rapid and widespread changes in the abundance and distribution of North Pacific plankton and fish species that impacted the region's economically important salmon fisheries. Now, researchers suggest that longer, less frequent climate fluctuations may be contributing to abrupt and unexplained ecosystem shifts in the North Pacific.
Publ.Date : Mon, 31 Aug 2015 16:37:23 EDT

Technique designed to predict how much energy waves will be bringing
Marine energy has a great future potential according to the experts, but there is still a long way to go before it can be used on a large scale. A team of researchers has now developed a technique to forecast wave energy several hours in advance.
Publ.Date : Mon, 31 Aug 2015 10:18:25 EDT

Better daily sea ice forecasts for the Arctic
Ice experts have developed a straightforward new technique for estimating sea ice concentration in the Arctic Ocean, and the new method improves the US Navy's short-term sea ice forecast of ice edge location by almost 40 percent. With shipping on the rise in the Arctic Ocean, improving these short-term forecasts makes navigating in Arctic waters safer.
Publ.Date : Mon, 31 Aug 2015 00:12:31 EDT

NASA's summer research on sea level rise in Greenland
On Greenland's ice sheet, a vast icy landscape crisscrossed by turquoise rivers and dotted with meltwater lakes, a small cluster of orange camping tents popped up in late July. The camp, home for a week to a team of researchers, sat by a large, fast-flowing river. Just half a mile (a kilometer) downstream, the river dropped into a seemingly bottomless moulin, or sinkhole in the ice. The low rumble of the waters, the shouted instructions from scientists taking measurements, and the chop of the blades of a helicopter delivering personnel and gear were all that was heard in the frozen landscape.
Publ.Date : Fri, 28 Aug 2015 11:11:12 EDT

Greenland campaign takes flight to measure ice sheet
Earlier this month, a NASA instrument nestled in the belly of a small plane flew over Greenland's ice sheet and the Arctic Ocean's icy waters. Flying above creviced glaciers, chunks of ice floating in melt ponds, and the slushy edges of the ice sheets, the instrument used a rapidly firing laser to measure the elevation of the surface below.
Publ.Date : Fri, 28 Aug 2015 11:11:11 EDT

Intensity of desert storms may affect ocean phytoplankton
Scientists have determined that once iron is deposited in the ocean, it has a very short residence time, spending only six months in surface waters before sinking into the deep ocean. This high turnover of iron signals that large seasonal changes in desert dust may have dramatic effects on surface phytoplankton that depend on iron.
Publ.Date : Thu, 27 Aug 2015 12:19:26 EDT

What would a tsunami in the Mediterranean look like?
Researchers have developed a model to simulate the impact of tsunamis generated by earthquakes and applied it to the Eastern Mediterranean. The results show how tsunami waves could hit and inundate coastal areas in southern Italy and Greece.
Publ.Date : Thu, 27 Aug 2015 08:35:28 EDT

DNA sequencing used to identify thousands of fish eggs
Using DNA sequencing, researchers have accurately painted a clear picture of fish spawning activities in a marine protected area and have created a baseline for continuing studies on the effects of climate variability on fish populations. Researchers collected 260 samples off the Ellen Browning Scripps Memorial Pier over a two-year period and used DNA barcoding to accurately identify over 13,000 fish eggs.
Publ.Date : Wed, 26 Aug 2015 14:41:12 EDT