Mike Bickle

Axisymmetric gravity currents in a porous medium

The release from a point source of relatively heavy fluid into a saturated porous medium above an impermeable boundary is considered. A theoretical relationship is compared with experimental data for the rate of propagation of the front of the resulting gravity current and its shape. A motivation of the study, the problem of carbon dioxide sequestration, is briefly discussed.

Spatial and temporal evolution of injected CO2 at the Sleipner Field, North Sea

Time-lapse, three-dimensional (3D) seismic surveys have imaged an accumulation of injected CO

Observational evidence confirms modelling of the long-term integrity of CO2-reservoir caprocks

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On discrimination between carbonate and silicate inputs to Himalayan rivers

adjacent to the Sleipner field in the North Sea basin. The changing pattern of reflectivity suggests that CO

Modelling carbon-dioxide accumulation at Sleipner: implications for underground carbon storage

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Geological carbon storage

accumulates within a series of interbedded sandstones and mudstones beneath a thick caprock of mudstone. Nine reflective horizons within the reservoir have been mapped on six surveys acquired between 1999 and 2008. These horizons have roughly elliptical planforms with eccentricities ranging between two and four. In the top half of the reservoir, horizon areas grow linearly with time. In the bottom half, horizon areas initially grow linearly for about eight years and then progressively shrink. The central portions of deeper reflective horizons dim with time. Amplitude analysis of horizons above, within, and below the reservoir show that this dimming is not solely caused by acoustic attenuation. Instead, it is partly attributable to CO

The Paleogene record of Himalayan erosion: Bengal Basin, Bangladesh

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Contribution of deep groundwater to the weathering budget in a rapidly eroding mountain belt, Taiwan

migration and/or CO

Feldspar dissolution kinetics and Gibbs free energy dependence in a CO2-enriched groundwater system, Green River, Utah

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Pulses of carbon dioxide emissions from intracrustal faults following climatic warming

dissemination, which reduce the impedance contrast between sandstone and mudstone layers. Growth characteristics and permeability constraints suggest that each horizon grows by lateral spreading of a gravity current. This model is corroborated by the temporal pattern of horizon velocity pushdown beneath the reservoir. Horizon shrinkage may occur if the distal edge of a CO