Nature Geoscience - Current issue : November 2009 - Vol 2 No 11
- Partial melt beneath the Washington Cascades
- Tropical ocean: Cooling the surface
- Lowermost mantle: Weak post-perovskite
- Mountain ridge migration: Drainage basins split
Latest content
Advance Online Publication
Deep strain
Letter by Wdowinski
Earthquakes are far more common along the San Jacinto fault in California than the nearby southern San Andreas fault. An analysis of seismic and geodetic data suggests that the excess seismicity along the San Jacinto fault is due to a creeping motion along the deeper parts of the fault.
Advance Online Publication
Securing carbon
Progress Article by Matter & Kelemen
The rapid increase in anthropogenic emissions of greenhouse gases necessitates the consideration of mechanisms for capturing and storing carbon dioxide. Recent work suggests that fluid or gaseous carbon dioxide can be injected into the Earth's crust, and locked up as carbonate minerals to achieve near-permanent and secure sequestration.
Current Issue
Melt beneath Mount St Helens
Letter by Hill et al.
The cause of high electrical conductivity in the middle crust beneath the Pacific Northwest region of the US is not clear. New electrical resistivity data reveal a connection between this regional conductor and a localized conductor beneath a prominent volcano in the region, suggesting that the anomalous conductivity is due to the presence of partial melts.
Current Issue
Sprite formation
Letter by Luque & Ebert
Sprite discharges above thunderclouds, at altitudes of 40–90 km, are usually created by a strong positive cloud-to-ground lightning flash. A numerical discharge model of the process suggests that sprite streamers are generated through the collapse of a downward-propagating screening-ionization wave in the lower ionosphere.
Current Issue
Early warming
Correspondence by Brönnimann
The warming since the 1960s is attributed largely to anthropogenic influences. By contrast, the warming from the 1910s to the 1940s, here termed early twentieth-century warming, still defies full explanation.
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