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Mercury accumulation in alpine permafrost vegetation via root uptake increases with altitude relative to foliage uptake from the atmosphere, according to analyses of mercury concentrations and isotopic signatures in grass and soil profiles in the Qinghai-Tibet Plateau.
Nanocrystallization in experiments on basalt melts and glasses from Mt. Etna and Stromboli is mainly triggered by undercooling-driven oversaturation in TiO2 and FeO, which could bias viscosity measurements and affect magma dynamics during decompression.
Eocene to Oligocene age Himalayan zircons were transported through the Bengal submarine channel, subducted in the Sunda trench, and resurfaced in the arc volcanoes of Sumatra, according to U-Pb-Hf-O isotopes from arc basalts and andesites
The adoption of more efficient technologies has reduced the environmental impacts associated with cement manufacturing in China during the period 1996–2021, according to a life-cycle assessment based on provincial-level data.
Brittle-ductile deformation of hydrothermally altered mafic basement rocks on Mars may pin-point the location of base and rare metals and constrain Mars’ earliest crustal evolution, according to structural, spectral and geomagnetic mapping
The 2022 Hunga-Tonga eruption stimulated low-frequency and long-lasting coupling between the atmosphere and the solid Earth which likely resulted from the excitation of Earth’s normal modes, according to ground motion observations detected by seismometers globally
Sediments on the northern plains of Mars experienced aqueous alteration during interaction with a limited or ephemeral water source, according to spectral analyses of Martian rocks and soils encountered by the Zhurong rover.
More extreme summer droughts and aridification in eastern Europe since 1850, relative to the past 700 years, probably resulted from a shift in atmospheric circulation patterns over the continent, suggest tree-ring cellulose oxygen isotope records.
Enhanced subpolar gyre intensity and enhanced winter convection linked to a positive North Atlantic Oscillation Index explains recent oxygenation of Labrador Sea Water in the Irminger Sea, according to an analysis of autonomous profiling float and shipborne observational data between 1991 and 2018.
Westward drifting and southward tapering of the South American continent have modulated the asymmetry and non-uniformity in South Atlantic opening, according to analytical modelling informed by geological and geophysical data
Average microbial biomass loads in glacial melt water are similar despite different environmental settings allowing for estimation of regional carbon export from melting glacier surfaces, according to direct observations at eight northern hemisphere glaciers and two Greenland Ice Sheet sites.
A shift in Central Asian dust supply with a reduced dominance of the Gobi Desert occurred during Pliocene global cooling, according to a combination of multi-proxy records from a Pacific ferromanganese crust and climate simulations.
Regional sea-level highstand triggered rapid Holocene upstream thinning of the East Antarctic Ice Sheet in Dronning Maud Land, suggest ice sheet and crustal rebound model simulations constrained by cosmogenic nuclide chronometry.
Variations in the biogeography of particulate organic matter carbon-nitrogen-phosphorus stoichiometry in the surface ocean can be robustly predicted by different factors depending on latitude, region and hemisphere, according to a global ocean observational analysis.
China, Germany and UK were the largest net importers of pesticide hazard loads embodied in commodities in 2015, while the USA, Brazil and Spain were the largest net exporters, according to a top-down multi-region input-output analysis of footprints for 82 countries and territories.
Diel variations in the isotopic composition of dissolved oxygen in river water reveal high rates of gross primary production and respiration rates in 14 rivers across three biomes, suggesting that the microbial loop in rivers may cycle carbon more rapidly than thought.
Supraglacial debris in High-Mountain Asia is extensively thin and its supply rate from local topography increases with the temperature and slope of debris-supply slopes, according to analyses of remote sensing data from over 4600 glaciers.
The variation of crustal density associated with slow tectonic motion is reflected in changes in gravity, according to measurements from superconducting gravimeters.
Uncertainties in the CO2 flux in the Southern Ocean, produced by a lack of direct wintertime observations, can be addressed by a combination of pseudo observations and neural network machine learning-based mapping.
Multiple climatic events on Mars over a large range of geologic time, which peaked 3.7–3.8 billion years ago may have created warm, wet and anoxic conditions episodically, according to a compilation of over 200 Martian chemical weathering profiles.