NASA/JPL/GSFC

Dry flows on Mars

Latest Research

  • Article |

    A super-hydrated clay mineral may play an important role in the solid Earth’s water cycle, according to laboratory experiments. The mineral kaolinite can carry and release large amounts of water during subduction.

    • Huijeong Hwang
    • , Donghoon Seoung
    • , Yongjae Lee
    • , Zhenxian Liu
    • , Hanns-Peter Liermann
    • , Hyunchae Cynn
    • , Thomas Vogt
    • , Chi-Chang Kao
    •  & Ho-Kwang Mao
  • Article |

    An increase in biodiversity 450 million years ago coincided with a rise in atmospheric oxygen concentrations, suggests a geochemical analysis. Oxygen availability may have thus helped spur the radiation alongside climatic cooling.

    • Cole T. Edwards
    • , Matthew R. Saltzman
    • , Dana L. Royer
    •  & David A. Fike
  • Article |

    Consolidated sediments in the Cascadia subduction zone may create conditions favourable for megathrust earthquake ruptures over long distances and close to the trench, according to analyses of seismic velocity of sediments from the region. Less-consolidated sediments instead may promote  aseismic slip of the plate boundary.

    • Shuoshuo Han
    • , Nathan L. Bangs
    • , Suzanne M. Carbotte
    • , Demian M. Saffer
    •  & James C. Gibson
  • Article |

    Storms are not only generated at higher latitudes, they also travel further in a warmer climate, according to analyses of climate model output with a storm-tracking algorithm. The larger travel distance is attributed to stronger upper-level winds and increased atmospheric water vapour.

    • Talia Tamarin-Brodsky
    •  & Yohai Kaspi

News & Comment

  • News and Views |

    Rising oxygen levels may have facilitated the Great Ordovician Biodiversification Event according to a reconstruction of atmospheric oxygen concentrations.

    • Alycia L. Stigall
  • Editorial |

    The world's inland waters are under siege. A system-level view of watersheds is needed to inform both our scientific understanding and management decisions for these precious resources.

  • News and Views |

    Ancient lavas reveal the presence of deep mantle reservoirs with anomalously light oxygen signatures. These lavas fingerprint heterogeneous mantle domains in early Earth that may have since been mixed away.

    • Marco Fiorentini
  • News and Views |

    Satellite measurements indicate that Greenland's meltwater rivers are exporting one billion tons of sediment annually, a process that is controlled by the sliding rate of glaciers. This rate is nearly 10% of the fluvial sediment discharge to the ocean.

    • Matthew A. Charette

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