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“#Meteorite study suggests Earth may have been wet since it formed” Piece of the meteorite Sahara 97096 (about 10 cm long), an enstatite chondrite that contains about 0.5 weight % of water. If Earth formed entirely of this material, it would have received 23 times the total mass of water present in the Earth’s oceans….
“#New study contradicts assumptions of constant element conditions in the oceans” Especially coastal areas and continental margins are very active boundaries for changes in seawater with respect to some elemental ratios. Credit: Fernando Jorge The compositional ratios of elements such as magnesium, calcium or strontium in seawater are an important means for the reconstruction of…
“#The Le Teil earthquake provides new insights on seismic risk in France and Western Europe” Surface displacement mapped using InSAR satellite imaging data. Along the fault, the ground was either raised (southeast) or collapsed (northwest). The star designates the epicentre. Credit: Jean-François RITZ et al On 11 November 2019, a magnitude 5 earthquake occurred near…
“#Artificial intelligence learns continental hydrology” Comparison of monthly-mean terrestrial water storage anomalies (TWSAs) in selected months of the prediction year 2019. Credit: Image: Irrgang et al. 2020, Geophysical Research Letters, https://doi.org/10.1029/2020GL089258 Changes to water masses which are stored on the continents can be detected with the help of satellites. The data sets on the Earth’s…
“#Mount Everest summit success rates double, death rate stays the same over last 30 years” Credit: CC0 Public Domain As the world’s tallest peak, Mount Everest draws more than 500 climbers each spring to attempt the summit during a small window of favorable conditions on the rugged Himalayan mountain that tops out at just over…
“#Antarctic ice shelves vulnerable to sudden meltwater-driven fracturing, says study”
“#Tiny ‘ghost creatures’ from Antarctica give insight into past, current climate change” The world’s scientists have been trying to figure out how exactly ice sheets in Antarctica have changed and moved for decades. Knowing this is critical to understanding rises in sea level and the accompanying global impacts. Many of those efforts have produced promising…
“#The age of the Earth’s inner core revised” A computer simulation of the Earth’s magnetic field, which is generated by heat transfer in the Earth’s core. Credit: NASA/Gary A. Glatzmaier. By creating conditions akin to the center of the Earth inside a laboratory chamber, researchers have improved the estimate of the age of our planet’s…
“#Glacier town at risk in next great New Zealand earthquake” Franz Josef Glacier in New Zealand. Credit: Vaido Otsar Running through the heart of New Zealand’s glacier country is the infamous Alpine Fault. The 600 kilometer-long (370 mile) faultline on the boundary of the Eurasian and Pacific tectonic plates beneath the country’s South Island produces…