Earth’s oscillating climate is a natural guess to explain cyclic patterns in erosion, but new sediment data suggests that cyclicity may emerge from tectonic processes adding material to the Himalaya.
Editors’ Highlights
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Bottom-up Meets Top-down Estimates of Wetland Methane Emissions
An innovative integration of models and satellite observations indicates weak temperature sensitivity of CH4 emissions from tropical wetlands, but temperature sensitivity is high at higher latitudes.
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Coupled Mechanisms of Fluid Transport Across the Crust
Magmatic fluid moves up in the ductile zone through porosity waves, accumulates in high-porosity lenses, and migrates across the brittle zone in a convection pattern involving also meteoric fluid.
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Subduction Zone Earthquakes: Fast and Slow, Weak and Strong
What causes slow earthquakes in subduction zones? New insights from numerical models suggest that a mixture of strong and weak rocks might be the cause.
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Atoll Seismometer Detection of Solitary Ocean Waves
Seismic recordings from the South China Sea indicate that subtle, daily tilting of shorelines due to passing internal ocean waves can be measured on land, promising new constraints on ocean dynamics.
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New Inversion Method Improves Earthquake Source Imaging
A new method uses Bayesian inference to jointly invert for non-planar fault geometry and spatially variable slip (with associated uncertainties) in earthquake source modeling, based on geodetic data.
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Not So Hot Under the Collar
Thermal properties of Martian soil as measured by the InSight lander.
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Seasonality in Saharan Dust Across the Atlantic Ocean
The first time series of bi-weekly dust concentrations measured in-situ across the remote Atlantic Ocean.
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Looking Down to See Upwards
Hydrological observations of cosmic ray neutrons scattered by water in soil can also provide information on space weather events such as Forbush decreases and ground level enhancements.
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Magnetic Record of Early Nebular Dynamics
Magnetized particles in a meteorite suggest strong magnetic fields in the early solar nebula.