Slow leakages of CO2Carbon dioxide from a storage(CO2) A process for retaining captured CO2, so that it does not reach the atmosphere reservoirA subsurface body of rock with sufficient porosity and permeability to store and transmit fluids beneath the ocean would not generally pose an immediate threat to humans. In the open ocean, released CO2Carbon dioxide will be partly dissolved in the water columnVertically continuous mass of water from the surface to the bottom sediments of a water body, and any remaining CO2Carbon dioxide escaping to the atmosphereThe layer of gases surrounding the earth; the gases are mainly nitrogen (78%) and oxygen (around 21%) will be mixed with air and rapidly diluted (Chadwick et al., 2008). For people on ships and offshore installations, the situation might however be critical in case they are located directly above the site of a catastrophic leakage(in CO2 storage) The escape of injected fluid from the storage formation to the atmosphere or water column. The riskConcept that denotes the product of the probability of a hazard and the subsequent consequence of the associated event that a ship might conceivably sink(CO2) The natural uptake of CO2 from the atmosphere, typically in soils, forests or the oceans in a large rising gas bubble has not been assessed.
Leakage(in CO2 storage) The escape of injected fluid from the storage formation to the atmosphere or water column from offshore pipelines, wells, and reservoirs could adversely affect a larger area because of the dissolution and acidification of the surrounding seawater. They should be modelled with regard to possible CO2Carbon dioxide concentrations in the pelagic and surface zones and biological effects assessed thereafter (Chadwick et al., 2008). Seepage from offshore geological storage(CO2) A process for retaining captured CO2, so that it does not reach the atmosphere sites might pose a hazard to benthicRelating to the bottom of a sea or lake or to the organisms that live there environments and organisms as the CO2Carbon dioxide moves from deep geological structures through benthicRelating to the bottom of a sea or lake or to the organisms that live there sediments to the ocean. While leaking CO2Carbon dioxide might be hazardous to the benthicRelating to the bottom of a sea or lake or to the organisms that live there environment, the seabedBoundary between the free water and the top of the seabottom sediment and overlying seawater will also act as a barrier, reducing the escape of seeping CO2Carbon dioxide to the atmosphereThe layer of gases surrounding the earth; the gases are mainly nitrogen (78%) and oxygen (around 21%). These hazards are distinctly different from the environmental effects of the dissolved CO2Carbon dioxide on aquatic life in the water columnVertically continuous mass of water from the surface to the bottom sediments of a water body.