New thermochronology data and thermal history modeling from the Canadian Shield show that the Great Unconformity formed there later than elsewhere in North America and may represent another event.
Editors’ Highlights
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Tropical Cyclone Induced Increase in Ocean Primary Production
A positive trend in tropical cyclone induced ocean mixing and primary production is compensating the overall decline in global primary production due to anthropogenic climate change.
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Unravelling Sands and Muds Suspended in Coastal Environments
A new study uses the response of optical and acoustic measurements to derive a sediment composition index for prediction of the relative fractions of mixed sediments in suspension.
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Analysis Reveals Patterns of Streamflow Generation Across USA
A new study transforms a classic conceptual framework into a quantitative classification of streamflow generation patterns.
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Permanence of Nature-Based Climate Solutions at Risk
Conserving native ecosystems helps sequester carbon and mitigate climate change, but new statistical modeling questions the permanence of California’s carbon-rich forests with climate change.
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The Highs and the Lows of Megathrust Earthquakes
Why does low-frequency energy come from the shallow part of ruptures, and the high frequencies from deep?
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Reconstructing Rocks with Machine Learning
Machine learning can be used to accurately reconstruct high-resolution, 3D images of rocks from 2D cross-sections, which opens the door to more detailed simulations.
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Previous Intra-oceanic Subduction Found Beneath South America?
Newly mapped fast velocity slabs in the lower mantle may be remnants of westward dipping intra-oceanic subduction, before flipping to the present eastward subduction beneath South America at 85 Ma.
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Good, Soon, and Cheap – Earthquake Early Warning by Smartphone
Fixed smartphone networks can provide robust early warning of earthquakes at far lower costs than traditional scientific arrays, which is an important consideration for regions with limited resources.
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Improved Seismic Imaging Via Optimal Transport Theory
Seismic waveform inversion is inherently non-linear. New objective functions based on optimal transport theory mitigate nonlinearity yielding stable solutions without need for accurate initial models.