A new study finds a naturally occurring ‘earthquake gate’ that decides which earthquakes are allowed to grow into magnitude 8 or greater. Sometimes, the ‘gate’ stops earthquakes in the magnitude 7 range, while ones that pass through the gate grow to magnitude 8 or greater, releasing over 32 times as much energy as a magnitude … Study reveals the workings of nature’s own earthquake blocker
Volcanologists’ ability to estimate eruption risks is largely reliant on knowing where pools of magma are stored, deep in the Earth’s crust. But what happens if the magma can’t be spotted? Title: Hidden magma pools pose eruption risks that we can’t yet detectSourced From: www.sciencedaily.com/releases/2021/04/210416143037.htmPublished Date: Fri, 16 Apr 2021 14:30:37 EDT News…. browse around … Hidden magma pools pose eruption risks that we can’t yet detect
The first photosynthetic oxygen-producing organisms on Earth were cyanobacteria. Their evolution dramatically changed the Earth allowing oxygen to accumulate into the atmosphere for the first time and further allowing the evolution of oxygen-utilizing organisms including eukaryotes. Eukaryotes include animals, but also algae, a broad group of photosynthetic oxygen-producing organisms that now dominate photosynthesis in the … A rich marine algal ecosystem 600 million years earlier than previously thought
In order to get a sense of what our future may hold, scientists have been looking to the deep past. Now, new research from the University of Massachusetts Amherst, which combines climate, ice sheet and vegetation model simulations with a suite of different climatic and geologic scenarios, opens the clearest window yet into the deep … Modelling ancient Antarctic ice sheets helps us see future of global warming
In the Cascadia subduction zone, medium and large-sized ‘intraslab’ earthquakes, which take place at greater than crustal depths within the subducting plate, will likely produce only a few detectable aftershocks, according to a new study. Title: Why are there relatively few aftershocks for certain cascadia earthquakes?Sourced From: www.sciencedaily.com/releases/2021/04/210413121012.htmPublished Date: Tue, 13 Apr 2021 12:10:12 EDT … Why are there relatively few aftershocks for certain cascadia earthquakes?
A group of researchers has taken advantage of different erosion rates and investigated how uplift and erosion of rocks determine the balance of carbon emissions and uptake. The surprising result: at high erosion rates, weathering processes release carbon dioxide; at low erosion rates, they sequester carbon from the atmosphere. Title: Mountain growth influences greenhouse effectSourced … Mountain growth influences greenhouse effect
Every year, our planet encounters dust from comets and asteroids. These interplanetary dust particles pass through our atmosphere and give rise to shooting stars. Some of them reach the ground in the form of micrometeorites. An international program conducted for nearly 20 has determined that 5,200 tons per year of these micrometeorites reach the ground. … More than 5,000 tons of extraterrestrial dust fall to Earth each year
The 15-million-year-old Nördlinger Ries is an asteroid impact crater filled with lake sediments. A research team has now discovered a volcanic ash layer in the crater. In addition, they show that the ground under the crater is sinking in the long-term, which provides important insights about craters on Mars, such as those currently being explored … Asteroid crater on Earth provides clues about Martian craters
The properties of the magma inside a volcano affect how an eruption will play out. In particular, the viscosity of this molten rock is a major factor in influencing how hazardous an eruption could be for nearby communities. But it usually only quantified well after an eruption. New work identifies an indicator of magma viscosity … Early indicators of magma viscosity could help forecast a volcano’s eruption style
A new study shows a correlation between the end of solar cycles and a switch from El Nino to La Nina conditions in the Pacific Ocean, suggesting that solar variability can drive seasonal weather variability on Earth. Title: New study ties solar variability to the onset of decadal La Nina eventsSourced From: www.sciencedaily.com/releases/2021/04/210405075853.htmPublished Date: Mon, … New study ties solar variability to the onset of decadal La Nina events