Showing 20 articles starting at article 561

< Previous 20 articles        Next 20 articles >

Categories: Geoscience: Geology, Geoscience: Oceanography

Return to the site home page

Environmental: General Environmental: Water Geoscience: Earth Science Geoscience: Geography Geoscience: Geology
Published

Critical observations of sinking coasts      (via sciencedaily.com)     Original source 

Using satellite-obtained data from 2007-21, researchers mapped the entire East Coast to demonstrate how the inclusion of land subsidence reveals many areas to be more vulnerable to floods and erosion than previously thought.

Archaeology: General Environmental: Water Geoscience: Earth Science Geoscience: Geology Geoscience: Oceanography Geoscience: Volcanoes Paleontology: Climate
Published

Study re-evaluates hazards and climate impacts of massive underwater volcanic eruptions      (via sciencedaily.com)     Original source 

Material left on the seafloor by bronze-age underwater volcanic eruptions is helping researchers better understand the size, hazards and climate impact of their parent eruptions, according to new research.

Chemistry: General Environmental: General Geoscience: Earth Science Geoscience: Geochemistry Geoscience: Geology Geoscience: Severe Weather Offbeat: Earth and Climate Offbeat: General Offbeat: Space Space: Astrophysics Space: Exploration Space: General Space: The Solar System
Published

Lightning strike creates phosphorus material      (via sciencedaily.com)     Original source 

A lightning strike in New Port Richey, Florida, led to a chemical reaction creating a new material that is transitional between space minerals and minerals found on Earth. High-energy events, such as lightning, can cause unique chemical reactions. In this instance, the result is a new material -- one that is transitional between space minerals and minerals found on Earth.

Environmental: General Environmental: Water Geoscience: Earth Science Geoscience: Earthquakes Geoscience: Environmental Issues Geoscience: Geography Geoscience: Geology Geoscience: Oceanography Offbeat: Earth and Climate Offbeat: General
Published

Warm liquid spewing from Oregon seafloor comes from Cascadia fault, could offer clues to earthquake hazards      (via sciencedaily.com)     Original source 

Oceanographers discovered warm, chemically distinct liquid shooting up from the seafloor about 50 miles off Newport. They named the unique underwater spring 'Pythia's Oasis.' Observations suggest the spring is sourced from water 2.5 miles beneath the seafloor at the plate boundary, regulating stress on the offshore subduction zone fault.

Geoscience: Environmental Issues Geoscience: Geography Geoscience: Oceanography Paleontology: Climate Paleontology: General
Published

Ice sheets can collapse faster than previously thought possible      (via sciencedaily.com)     Original source 

Ice sheets can retreat up to 600 meters a day during periods of climate warming, 20 times faster than the highest rate of retreat previously measured. An international team of researchers used high-resolution imagery of the seafloor to reveal just how quickly a former ice sheet that extended from Norway retreated at the end of the last Ice Age, about 20,000 years ago.

Geoscience: Earth Science Geoscience: Earthquakes Geoscience: Geochemistry Geoscience: Geology
Published

Was plate tectonics occurring when life first formed on Earth?      (via sciencedaily.com)     Original source 

Researchers used small zircon crystals to unlock information about magmas and plate tectonic activity in early Earth. The research provides chemical evidence that plate tectonics was most likely occurring more than 4.2 billion years ago when life is thought to have first formed on our planet. This finding could prove beneficial in the search for life on other planets.

Biology: Biochemistry Biology: Biotechnology Biology: Cell Biology Biology: Evolutionary Biology: General Biology: Marine Ecology: General Ecology: Research Ecology: Sea Life Environmental: Ecosystems Geoscience: Earth Science Geoscience: Geography Geoscience: Oceanography
Published

Scientists discover hidden crab diversity among coral reefs      (via sciencedaily.com) 

The Indo-West Pacific is the largest marine ecosystem on Earth, but scientists who study its diversity have to contend with a problem so well-known it was remarked upon by Charles Darwin: related species in the IWP have similar appearances, making it difficult to assess just how many there are. A new study reveals that nearly identical crab species have one consistently distinguishing feature, which only evolves when their ranges overlap.

Ecology: General Environmental: Ecosystems Environmental: General Geoscience: Earth Science Geoscience: Geochemistry Geoscience: Geography Geoscience: Oceanography
Published

Most of world's salt marshes likely to be underwater by 2100, study concludes      (via sciencedaily.com) 

Salt marshes are some of the most biologically productive ecosystems on Earth. They play an outsized role in nitrogen cycling, act as carbon sinks, protect coastal development from storm surge, and provide critical habitats and nurseries for many fish, shellfish, and coastal birds. According to new research, more than 90 percent of the world's salt marshes are likely to be underwater by the end of the century. These findings come from a 50-year study of ecosystem changes in Great Sippewissett Marsh in Falmouth, Mass.

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

Juvenile black rockfish affected by marine heat wave but not always for the worse, research shows      (via sciencedaily.com) 

Larvae produced by black rockfish, a linchpin of the West Coast commercial fishing industry for the past eight decades, fared better during two recent years of unusually high ocean temperatures than had been feared, new research finds.

Biology: Biochemistry Biology: Biotechnology Biology: Cell Biology Biology: General Biology: Marine Ecology: Extinction Ecology: Sea Life Environmental: Biodiversity Environmental: Ecosystems Environmental: General Environmental: Water Geoscience: Earth Science Geoscience: Geography Geoscience: Oceanography
Published

Detecting coral biodiversity in seawater samples      (via sciencedaily.com) 

Researchers have developed a method to measure coral biodiversity through extracting the environmental DNA (or eDNA) from a liter of surface seawater collected from above a reef. The method has been confirmed to work through observations made by scientific divers in the same areas of ocean. This has paved the way for large-scale comprehensive surveys of reef-building coral to take place and removes the reliance of direct observations made through scientific scuba diving or snorkeling.

Environmental: Ecosystems Environmental: General Geoscience: Earth Science Geoscience: Environmental Issues Geoscience: Geography Geoscience: Oceanography
Published

How to prepare for ocean acidification, a framework      (via sciencedaily.com) 

An international research team develops a rubric for governments and policymaking bodies to evaluate preparedness for ocean acidification.

Biology: Marine Ecology: Sea Life Environmental: Ecosystems Geoscience: Earth Science Geoscience: Geography Geoscience: Landslides Geoscience: Oceanography
Published

Some coastal salt marshes are keeping up with sea level rise -- for now      (via sciencedaily.com) 

The world's salty, tidal marshes are hotspots of carbon storage and productivity, building up sediments and plant material to stay above sea level. However, as sea level rises at an increasing rate, scientists debate whether it's possible for wetlands to win the race. New research reveals how salt marshes along the U.S. East Coast have responded to accelerating sea level rise by building elevation more quickly to keep pace with the sea over the last century.

Environmental: General Geoscience: Earth Science Geoscience: Environmental Issues Geoscience: Geochemistry Geoscience: Geography Geoscience: Oceanography Paleontology: Climate
Published

The Greenland Ice Sheet is close to a melting point of no return      (via sciencedaily.com) 

A new study using simulations identified two tipping points for the Greenland Ice Sheet: releasing 1000 gigatons of carbon into the atmosphere will cause the southern portion of the ice sheet to melt; about 2500 gigatons of carbon means permanent loss of nearly the entire ice sheet. Having emitted about 500 gigatons of carbon, we're about halfway to the first tipping point.

Chemistry: Thermodynamics Environmental: Ecosystems Environmental: General Environmental: Water Geoscience: Earth Science Geoscience: Environmental Issues Geoscience: Geology
Published

Surprise effect: Methane cools even as it heats      (via sciencedaily.com) 

Most climate models do not yet account for a recent discovery: methane traps a great deal of heat in Earth's atmosphere, but also creates cooling clouds that offset 30% of the heat.

Archaeology: General Geoscience: Earth Science Geoscience: Geology Geoscience: Volcanoes
Published

Giant volcanic 'chain' spills secrets on inner workings of volcanoes      (via sciencedaily.com) 

Volcanic relics scattered throughout the Australian landscape are a map of the northward movement of the continent over a 'hotspot' inside the Earth, during the last 35 million years.

Biology: Biochemistry Biology: Botany Biology: Marine Ecology: Sea Life Environmental: Ecosystems Environmental: Water Geoscience: Geography Geoscience: Oceanography Geoscience: Severe Weather
Published

Phytoplankton blooms offer insight into impacts of climate change      (via sciencedaily.com) 

The first study into the biological response of the upper ocean in the wake of South Pacific cyclones could help predict the impact of warming ocean temperatures, researchers believe.