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We look at changes in authorship and cross-institutional links in the papers we publish. Both are increasing as the geosciences continue to become more collaborative.
It is commonly thought that old groundwater cannot be pumped sustainably, and that recently recharged groundwater is inherently sustainable. We argue that both old and young groundwaters can be used in physically sustainable or unsustainable ways.
Deep, carbon-rich Pacific waters intruded into the South Atlantic some 38 to 28 thousand years ago. This deep Pacific expansion could have represented a considerable sink of atmospheric CO2, one that helped initiate the Last Glacial Maximum.
Antarctic ice volume expansion in the middle Miocene coincides with Southern Ocean cooling, according to biomarker and clumped isotope temperature records from south of Tasmania.
Phosphorus remobilized from seafloor sediments due to a reduced influx of iron-oxide from land led to widespread anoxia during the end-Permian mass extinction, according to palaeoredox and phosphorus speciation proxy records from Svalbard.
Mounds within Ceres’s Occator crater may have formed by freezing of water-rich impact-induced melt, by a process analogous to that of pingo formation on Earth, according to an analysis of data from NASA’s Dawn mission.
In one earthquake, an oceanic transform fault ruptured in one direction and then backwards at a speed exceeding that of shear-wave propagation, according to an analysis of data recorded by nearby seafloor and global seismometers.
Deliberate application of sulfur onto croplands as fertilizer and pesticide probably causes environmental damage similar to historical acid rain events, according to a literature review and four case studies from the United States.
Meltwater entering the Southern Ocean from Antarctic ice shelves varies substantially from year to year, with consequences for Southern Ocean circulation and climate, according to remote sensing estimates of ice-shelf basal melting rates.
Some valleys in the southern highlands of Mars may have formed by subglacial erosion, consistent with a cold and icy early Mars, according to a statistical analysis of valley morphometry.
Experiments show that the iron isotopic composition of iron meteorites can be explained by core crystallization, and suggest the presence of sulfur-rich core material that remains unsampled by meteorite collections.
Soils store vast quantities of carbon and have the potential to help mitigate or exacerbate climate change. We need to better understand the interplay of chemical, physical and biological processes that govern soil carbon cycling and stability.
Dynamic interactions between chemical and biological controls govern the stability of soil organic carbon and drive complex, emergent patterns in soil carbon persistence.
A review of the organic carbon cycle explores the interactions between the Earth’s surface and deeper reservoirs, the expanding inorganic controls on the organic carbon cycle, and how these links have strengthened through geological time.
The Archaean atmosphere may have been well oxygenated, according to a reconsideration of sulfur cycling at that time. This challenges the view that sedimentary sulfur records oxygen-poor conditions during Earth’s first two billion years.