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.

 

US ocean observation critical to understanding climate change, but lacks long-term national planning
Ocean observing systems are important as they provide information essential for monitoring and forecasting changes in Earth's climate on timescales ranging from days to centuries. A new report finds that continuity of ocean observations is vital to gain an accurate understanding of the climate, and calls for a decadal, national plan that is adequately resourced and implemented to ensure critical ocean information is available to understand and predict future changes.
Publ.Date : Fri, 20 Oct 2017 12:57:58 EDT

Life goes on for marine ecosystems after cataclysmic mass extinction
One of the largest global mass extinctions did not fundamentally change marine ecosystems, scientists have found.
Publ.Date : Fri, 20 Oct 2017 09:22:26 EDT

Climate shifts shorten marine food chain off California
Environmental disturbances such as El NiƱo shake up the marine food web off Southern California, new research shows, countering conventional thinking that the hierarchy of who-eats-who in the ocean remains largely constant over time.
Publ.Date : Thu, 19 Oct 2017 17:16:37 EDT

Maintaining fish biomass the key to conserving reef fish biodiversity
A new study has found that conserving fish diversity in Madagascar's coral reef systems may depend on maintaining fish biomass above critical levels.
Publ.Date : Thu, 19 Oct 2017 10:10:29 EDT

Scientists see order in complex patterns of river deltas
River deltas, with their intricate networks of waterways, coastal barrier islands, wetlands and estuaries, often appear to have been formed by random processes, but scientists see order in the apparent chaos.
Publ.Date : Thu, 19 Oct 2017 10:10:21 EDT

Fossil coral reefs show sea level rose in bursts during last warming
Scientists have discovered that Earth's sea level did not rise steadily when the planet's glaciers last melted during a period of global warming; rather, sea level rose sharply in punctuated bursts.
Publ.Date : Thu, 19 Oct 2017 10:09:54 EDT

Ice stream retreats under a cold climate
Warmer ocean surface triggered the ice retreat during The Younger Dryas.
Publ.Date : Thu, 19 Oct 2017 10:08:02 EDT

Keratin, proteins from 54-million-year-old sea turtle show survival trait evolution
Researchers have retrieved original pigment, beta-keratin and muscle proteins from a 54-million-year-old sea turtle hatchling. The work adds to the growing body of evidence supporting persistence of original molecules over millions of years and also provides direct evidence that a pigment-based survival trait common to modern sea turtles evolved at least 54 million years ago.
Publ.Date : Tue, 17 Oct 2017 09:18:57 EDT

Waves in lakes make waves in the Earth
Scientists report that small seismic signals in lakes can aid science. As a record of wave motion in a lake, they can reveal when a lake freezes over and when it thaws. And as a small, constant source of seismic energy in the surrounding earth, lake microseisms can shine a light on the geology surrounding a lake.
Publ.Date : Mon, 16 Oct 2017 08:19:50 EDT

Giant sea bass worth more alive as undersea wonders than as commercial catch
An investigation of the different economic values of giant sea bass finds they are worth more alive as undersea wonders than as commercial catch.
Publ.Date : Sat, 14 Oct 2017 11:16:23 EDT

Melting ice makes the sea around Greenland less saline
For the first time, ocean data from Northeast Greenland reveals the long-term impact of the melting of the Greenland ice sheet. The observed increase in freshwater content will affect the conditions in all Greenland fjords and may ultimately affect the global ocean currents that keep Europe warm.
Publ.Date : Fri, 13 Oct 2017 11:30:12 EDT

Baltic clams, worms release as much greenhouse gas as 20,000 dairy cows
Ocean clams and worms are releasing a significant amount of potentially harmful greenhouse gas into the atmosphere, scientists have shown.
Publ.Date : Fri, 13 Oct 2017 09:10:20 EDT

Warming seas could lead to 70 percent increase in hurricane-related financial loss
Hurricane-related financial loss could increase more than 70 percent by 2100 if oceans warm at the worst-case-scenario rate predicted by the Intergovernmental Panel on Climate Change, according to a new study. The study used a combination of hurricane modeling and information in FEMA's HAZUS database to reach its conclusions.
Publ.Date : Thu, 12 Oct 2017 15:18:03 EDT

Geologic evidence is the forerunner of ominous prospects for a warming Earth
While strong seasonal hurricanes have devastated many of the Caribbean and Bahamian islands this year, geologic studies on several of these islands illustrate that more extreme conditions existed in the past. A new analysis shows that the limestone islands of the Bahamas and Bermuda experienced climate changes that were even more extreme than historical events.
Publ.Date : Thu, 12 Oct 2017 11:48:39 EDT

Risk of tsunamis in Mediterranean Sea has been overstated, say experts
A review of geological evidence for tsunamis during the past 4500 years in the Mediterranean Sea has revealed that as many as 90 per cent of these inundation events may have been misinterpreted by scientists and were due to storm activity instead.
Publ.Date : Wed, 11 Oct 2017 14:48:44 EDT

Marine snowfall at the equator
Animal excrements and parts of dead organisms constantly sink from the surface of the oceans towards the deep sea. This particle flow plays an important role in the global carbon cycle and consequently for the climate. Little is known so far about its distribution in the water column. An international research team has now published a detailed image of the distribution of the marine snowfall in the equatorial ocean.
Publ.Date : Tue, 10 Oct 2017 12:41:15 EDT

Huge energy potential in open ocean wind farms in the North Atlantic
Because wind speeds are higher on average over ocean than over land, wind turbines in the open ocean could in theory intercept more than five times as much energy as wind turbines over land. This presents an enticing opportunity for generating renewable energy through wind turbines. But it was unknown whether the faster ocean winds could actually be converted to increased amounts of electricity.
Publ.Date : Mon, 09 Oct 2017 15:49:49 EDT

Mars study yields clues to possible cradle of life
The discovery of evidence for ancient sea-floor hydrothermal deposits on Mars identifies an area on the planet that may offer clues about the origin of life on Earth. The research offers evidence that these deposits were formed by heated water from a volcanically active part of the planet's crust entering the bottom of a large sea long ago.
Publ.Date : Fri, 06 Oct 2017 15:49:47 EDT

12,000 years ago, Florida hurricanes heated up despite chilly seas
Category 5 hurricanes may have slammed Florida repeatedly during the chilly Younger Dryas, 12,000 years ago. The cause? Hurricane-suppressing effects of cooler sea surface were out-weighed by side effects of slowed ocean circulation.
Publ.Date : Thu, 05 Oct 2017 12:50:28 EDT

Ancient humans left Africa to escape drying climate
Humans migrated out of Africa as the climate shifted from wet to dry about 60,000 years ago, according to new paleoclimate research. What the northeast Africa climate was like when people migrated from Africa into Eurasia between 70,000 and 55,000 years ago is still uncertain. The new research shows around 70,000 years ago, the Horn of Africa climate shifted from a wet phase called 'Green Sahara' to even drier than the region is now.
Publ.Date : Wed, 04 Oct 2017 15:12:31 EDT