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This week from AGU: Comet video, ocean carbon & 4 new research papers

American Geophysical Union

GeoSpace

Dusty comet releases mysterious clumps

Images of an unusually dusty comet have revealed strange streaming clumps that could hold the secrets to how comets create their beautiful, sweeping, striated tails. Watch a video of Comet C/2011 L4, the comet profiled in a new study in Journal of Geophysical Research-Space Physics.

Eos.org

Dissolved organic matter in the ocean carbon cycle

Controversy leads to a better understanding of carbon cycling through a massive pool of organic matter dissolved in the Earth's oceans.

New research papers

Crustal deformation in the New Madrid Seismic Zone and the role of postseismic processes, Journal of Geophysical Research: Solid Earth

Hydrologic fluctuations and sulfate regeneration increase methylmercury in an experimental peatland, Journal of Geophysical Research: Biogeosciences

On the reliability of the Spatial Scintillation Index to detect earthquake precursors in the ionosphere, Radio Science

Dependence of the dayside magnetopause reconnection rate on local conditions, Journal of Geophysical Research: Space Physics

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