Showing 20 articles starting at article 441

< Previous 20 articles        Next 20 articles >

Categories: Geoscience: Geology, Geoscience: Oceanography

Return to the site home page

Geoscience: Oceanography
Published

Study highlights importance of mineral iron in ocean ecosystems      (via sciencedaily.com)     Original source 

New research has revealed the importance of mineral forms of iron in regulating the cycling of this bio-essential nutrient in the ocean. The findings pave the way for new work on the relationship between the iron and carbon cycles and how changing ocean oxygen levels may interact.

Biology: Marine Ecology: Sea Life Geoscience: Oceanography
Published

Sea urchins are struggling to 'get a grip' as climate change alters ecosystems      (via sciencedaily.com)     Original source 

As global climate change causes weather extremes ranging from heat waves and droughts to heavy rains and flooding, the large amounts of freshwater pouring into nearshore ecosystems are altering habitats. A team of biologists studied the impacts of low salinity and how it alters sea urchins' ability to grip and move within their habitat.

Biology: Marine Ecology: Sea Life Geoscience: Geology Geoscience: Oceanography Paleontology: Climate
Published

Nature's kitchen: how a chemical reaction used by cooks helped create life on Earth      (via sciencedaily.com)     Original source 

A chemical process used in the browning of food to give it its distinct smell and taste is probably happening deep in the oceans, where it helped create the conditions necessary for life. Known as the Maillard reaction after the French scientist who discovered it, the process converts small molecules of organic carbon into bigger molecules known as polymers. In the kitchen, it is used to create flavors and aromas out of sugars. But a research team argues that on the sea floor, the process has had a more fundamental effect, where it has helped to raise oxygen and reduce carbon dioxide levels in the atmosphere, to create the conditions for complex life forms to emerge and thrive on Earth.

Geoscience: Earthquakes Geoscience: Geology Physics: Optics
Published

Fiber optic cables detect and characterize earthquakes      (via sciencedaily.com)     Original source 

The same fiber optic networks that provide internet can simultaneously act as earthquake sensors, as demonstrated in a new study.

Biology: Marine Ecology: General Ecology: Research Ecology: Sea Life Geoscience: Oceanography
Published

Study analyzes nearshore California marine heatwaves and cold spells amid changing climate conditions      (via sciencedaily.com)     Original source 

Human-caused climate change has also caused extreme ocean temperatures and conditions with detrimental impacts on marine ecosystems and ocean-related ecology.  A new study explores ocean temperature data along California's Coast, finding that certain environmental conditions and the state of the ocean led to an enhanced risk for marine heatwaves and cold spells, conditions that scientists and environmental managers will need to monitor to preserve and protect vital ecosystems critical to the California ocean economy, known as the Blue Economy.

Environmental: Ecosystems Geoscience: Geology Space: Exploration Space: The Solar System
Published

Dune patterns reveal environmental change on Earth and other planets      (via sciencedaily.com)     Original source 

Researchers have analyzed the shifting patterns of entire dune fields on Earth and Mars, as seen from orbit, and found they are a direct signature of recent environmental change. This new tool can be applied anywhere with dunes, such as Mars, Titan, and Venus.

Geoscience: Geology Paleontology: Fossils Space: The Solar System
Published

Earth's most ancient impact craters are disappearing      (via sciencedaily.com)     Original source 

Earth's oldest craters could give scientists critical information about the structure of the early Earth and the composition of bodies in the solar system as well as help to interpret crater records on other planets. But geologists can't find them, and they might never be able to, according to a new study.

Biology: Marine Ecology: Endangered Species Ecology: Extinction Ecology: Invasive Species Ecology: Sea Life Geoscience: Oceanography Geoscience: Severe Weather
Published

Sea level rise shifts habitat for endangered Florida Keys species      (via sciencedaily.com)     Original source 

A newly published study describes the response to sea level rise by the silver rice rat, an endangered species only found in the Florida Keys.

Geoscience: Oceanography Geoscience: Severe Weather Paleontology: Climate
Published

North Atlantic Oscillation contributes to 'cold blob' in Atlantic Ocean      (via sciencedaily.com)     Original source 

A patch of ocean in the North Atlantic is stubbornly cooling while much of the planet warms. This anomaly -- dubbed the 'cold blob' -- has been linked to changes in ocean circulation, but a new study found changes in large-scale atmospheric patterns may play an equally important role, according to an international research team.

Geoscience: Earthquakes Geoscience: Oceanography Geoscience: Severe Weather
Published

California's winter waves may be increasing under climate change      (via sciencedaily.com)     Original source 

A new study uses nearly a century of data to show that the average heights of winter waves along the California coast have increased as climate change has heated up the planet.

Energy: Alternative Fuels Geoscience: Geology Geoscience: Geomagnetic Storms Offbeat: Earth and Climate Offbeat: Space Physics: Optics Space: The Solar System
Published

Sun 'umbrella' tethered to asteroid might help mitigate climate change      (via sciencedaily.com)     Original source 

Earth is rapidly warming and scientists are developing a variety of approaches to reduce the effects of climate change. An astronomer has proposed a novel approach -- a solar shield to reduce the amount of sunlight hitting Earth, combined with a tethered, captured asteroid as a counterweight. Engineering studies using this approach could start now to create a workable design that could mitigate climate change within decades.

Biology: Marine Ecology: Endangered Species Ecology: Extinction Ecology: Sea Life Environmental: Ecosystems Geoscience: Environmental Issues Geoscience: Oceanography
Published

Arctic terns may navigate climate dangers      (via sciencedaily.com)     Original source 

Arctic terns -- which fly on the longest migrations of any animal on Earth -- may be able to navigate the dangers posed by climate change, new research suggests.

Geoscience: Environmental Issues Geoscience: Oceanography
Published

Gloomy climate calculation: Scientists predict a collapse of the Atlantic ocean current to happen mid-century      (via sciencedaily.com)     Original source 

Important ocean currents that redistribute heat, cold and precipitation between the tropics and the northernmost parts of the Atlantic region will shut down around the year 2060 if current greenhouse gas emissions persist. This is the conclusion based on new calculations that contradict the latest report from the IPCC.

Archaeology: General Ecology: Invasive Species Geoscience: Geology Paleontology: Fossils Paleontology: General
Published

Missing island explains how endemic species on the Miyako Islands emerged      (via sciencedaily.com)     Original source 

Miyako Islands are home to various native species of snake and lizards. How these species came to call these islands home has long puzzled scientists. A group of researchers have compiled the latest geological and biological data, proposing that an island once facilitated migration between Okinawa and Miyako Islands.

Geoscience: Earthquakes Geoscience: Geology
Published

What can central Utah's earthquake 'swarms' reveal about the West's seismicity?      (via sciencedaily.com)     Original source 

Much of central Utah's seismic activity comes in groups of small earthquakes. A study by seismologists examines 2,300 quakes occurring 40 'swarms' dating back to 1981, opening a window into Earth's crust in a geothermally active area.

Geoscience: Oceanography
Published

Using our oceans to fight climate change      (via sciencedaily.com)     Original source 

Scientists are investigating the use of membrane contactors for direct ocean carbon capture.

Geoscience: Oceanography Geoscience: Severe Weather
Published

Long-term changes in waves and storm surges have not impacted global coastlines      (via sciencedaily.com)     Original source 

Changes in ocean wave and storm conditions have not caused long-term impacts on sandy coastlines in the past 30 years, a new study has found.

Ecology: Endangered Species Ecology: Extinction Ecology: General Environmental: Ecosystems Geoscience: Geology
Published

In Florida, endangered coral finds a way to blossom      (via sciencedaily.com)     Original source 

In a new study, researchers have found that the restoration efforts of the critically endangered species elkhorn coral depend largely on the animal's location, microbiome, and the right conditions to provide an abundance of food.

Geoscience: Environmental Issues Geoscience: Geology Paleontology: Climate Paleontology: General
Published

Crawford Lake, Canada, chosen as the primary marker to identify the start of the Anthropocene epoch      (via sciencedaily.com)     Original source 

An international team of researchers has chosen the location which best represents the beginnings of what could be a new geological epoch, the Anthropocene. The Anthropocene Working Group have put forward Crawford Lake, in Canada, as a Global Boundary Stratotype Section and Point (GSSP) for the Anthropocene. A GSSP is an internationally agreed-upon reference point to show the start of a new geological period or epoch in layers of rock that have built up through the ages.

Geoscience: Geology Paleontology: Fossils Paleontology: General
Published

Scientists discover 36-million-year geological cycle that drives biodiversity      (via sciencedaily.com)     Original source 

Movement in the Earth's tectonic plates indirectly triggers bursts of biodiversity in 36 million-year cycles by forcing sea levels to rise and fall, new research has shown.