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.

 

Rising sea temperatures threaten survival of juvenile albatross
Changes in sea surface temperature affect the survival of albatross during their first year at sea, resulting in a reduced population growth rate when temperatures are warmer than the current average, a new study has revealed.
Publ.Date : Mon, 18 Jun 2018 10:26:05 EDT

Great white sharks dive deep into warm-water whirlpools in the Atlantic
Tracking data from two great white sharks reveals that they spend more time deep inside warm-water eddies, suggesting that's where they like to feed.
Publ.Date : Mon, 18 Jun 2018 10:25:42 EDT

Land-based portion of massive East Antarctic ice sheet retreated little during past eight million years
Large parts of the massive East Antarctic Ice Sheet did not retreat significantly during a time when atmospheric carbon dioxide concentrations were similar to today's levels.
Publ.Date : Fri, 15 Jun 2018 15:44:25 EDT

Why the tongue of the Pine Island Glacier suddenly shrank
The Pine Island Glacier in Western Antarctica is not only one of the fastest-flowing ice streams in the Southern Hemisphere; over the past 11 years, four major icebergs have calved from its floating tongue.
Publ.Date : Fri, 15 Jun 2018 09:48:36 EDT

Leading Antarctic experts offer two possible views of continent's future
The next 10 years will be critical for the future of Antarctica, and choices made will have long-lasting consequences, says an international group of Antarctic research scientists. It lays out two different plausible future scenarios for the continent and its Southern Ocean over the next 50 years.
Publ.Date : Thu, 14 Jun 2018 21:38:49 EDT

Who is to blame for marine litter?
Members of the public are more likely to blame the global marine litter crisis on retailers, industry and government, according to new research.
Publ.Date : Thu, 14 Jun 2018 21:37:03 EDT

What saved the West Antarctic Ice Sheet 10,000 years ago will not save it today
The retreat of the West Antarctic ice masses after the last Ice Age was reversed surprisingly about 10,000 years ago, scientists found. The reason for the rebound is that, relieved from the weight of the retreating ice, the Earth crust lifted. This made the ice re-advance towards the ocean. Unfortunately, this mechanism is much to slow to prevent dangerous sea-level rise caused by West Antarctica's ice-loss in the present and near future.
Publ.Date : Thu, 14 Jun 2018 10:12:45 EDT

Ocean waves following sea ice loss trigger Antarctic ice shelf collapse
Storm-driven ocean swells have triggered the catastrophic disintegration of Antarctic ice shelves in recent decades, according to new research published in Nature today.
Publ.Date : Thu, 14 Jun 2018 09:52:45 EDT

Decades of satellite monitoring reveal Antarctic ice loss
Scientists have reviewed decades of satellite measurements to reveal how and why Antarctica's glaciers, ice shelves and sea ice are changing. Their report explains how ice shelf thinning and collapse have triggered an increase in the continent's contribution to sea level rise.
Publ.Date : Wed, 13 Jun 2018 16:30:31 EDT

Antarctica ramps up sea level rise
Ice losses from Antarctica have increased global sea levels by 7.6 mm since 1992, with two fifths of this rise (3.0 mm) coming in the last five years alone. The findings are from a major climate assessment known as the Ice Sheet Mass Balance Inter-comparison Exercise (IMBIE). It is the most complete picture of Antarctic ice sheet change to date -- 84 scientists from 44 international organizations combined 24 satellite surveys to produce the assessment.
Publ.Date : Wed, 13 Jun 2018 16:30:29 EDT

Climate change accelerating rise in sea levels
A new study has discovered that rising sea levels could be accelerated by vulnerable ice shelves in the Antarctic.
Publ.Date : Wed, 13 Jun 2018 16:30:25 EDT

Stress test to predict how diatoms will react to ocean acidification
Researchers have shown that diatoms can withstand population collapse in an acidified environment by conserving valuable energy normally used for carbon dioxide consumption.
Publ.Date : Wed, 13 Jun 2018 16:26:56 EDT

Old Man River's unique chemical signature
Human activity greatly impacts the natural chemistry of the largest river in North America -- the Mississippi River. In a new, large-scale study, geologists have identified a unique chemical signature in the river.
Publ.Date : Wed, 13 Jun 2018 11:36:15 EDT

To forecast winter rainfall in the Southwest, look to New Zealand in the summer
Scientists have discovered an atmospheric teleconnection that allows them to accurately predict winter precipitation in the southwestern United States by measuring summer sea surface temperatures near New Zealand.
Publ.Date : Wed, 13 Jun 2018 10:19:46 EDT

Researchers investigate the correlation between wind and wave height in the Arctic Ocean
An international research team has found an increase in high waves and winds in the ice-free waters of the Arctic Ocean, a potentially dangerous navigational tipping point for the 'new and unusual' state of the waters.
Publ.Date : Tue, 12 Jun 2018 08:00:26 EDT

Volcanic activity, declining ocean oxygen triggered mass extinction of ancient organisms
Global climate change, fueled by skyrocketing levels of atmospheric carbon dioxide, is siphoning oxygen from today's oceans at an alarming pace -- so fast that scientists aren't entirely sure how the planet will respond.
Publ.Date : Mon, 11 Jun 2018 16:05:10 EDT

Fueling a deep-sea ecosystem
Miles beneath the ocean's surface in the dark abyss, vast communities of subseafloor microbes at deep-sea hot springs are converting chemicals into energy that allows deep-sea life to survive -- and even thrive -- in a world without sunlight. Until now, however, measuring the productivity of subseafloor microbe communities -- or how fast they oxidize chemicals and the amount of carbon they produce -- has been nearly impossible.
Publ.Date : Mon, 11 Jun 2018 15:27:42 EDT

Further drivers of ocean deoxygenation identified
Measurements as well as model calculations equally show that the oxygen inventory of the oceans is decreasing. However, the models underestimate this decrease significantly making projections into the future problematic.
Publ.Date : Mon, 11 Jun 2018 13:38:07 EDT

Large-scale study indicates novel, abundant nitrogen-fixing microbes in surface ocean
A large-scale study of the Earth's surface ocean indicates the microbes responsible for fixing nitrogen there -- previously thought to be almost exclusively photosynthetic cyanobacteria -- include an abundant and widely distributed suite of non-photosynthetic bacterial populations.
Publ.Date : Mon, 11 Jun 2018 13:34:53 EDT

Secret to whale shark hotspots
A study has uncovered the secret to why endangered whale sharks gather on mass at just a handful of locations around the world.
Publ.Date : Fri, 08 Jun 2018 10:33:30 EDT