搜索结果: 46-60 共查到“知识库 地球科学总论 ocean”相关记录95条 . 查询时间(0.064 秒)
Impact of ocean acidification on a key Arctic pelagic mollusc (Limacina helicina)
Impact ocean acidification key Arctic pelagic mollusc
2010/1/21
Thecosome pteropods (shelled pelagic molluscs) can play an important role in the food web of various ecosystems and play a key role in the cycling of carbon and carbonate. Since they harbor an aragoni...
Significant contribution of large particles to optical backscattering in the open ocean
Significant contribution large particles optical backscattering open ocean
2010/1/20
The light scattering properties of oceanic particles have been suggested as an alternative index of phytoplankton biomass than chlorophyll-a concentration (chl-a), with the benefit of being less sensi...
Stoichiometries of remineralisation and denitrification in global biogeochemical ocean models
Stoichiometries remineralisation denitrification global biogeochemical ocean models
2010/1/20
Since the seminal paper of Redfield (1934), constant stoichiometric elemental ratios linking biotic carbon and nutrient fluxes are often assumed in marine biogeochemistry, and especially in coupled bi...
Rapid reorganization in ocean biogeochemistry off Peru towards the end of the Little Ice Age
Rapid reorganization ocean biogeochemistry Peru Little Ice Age
2010/1/20
Climate and ocean ecosystem variability has been well recognized during the twentieth century but it is unclear if modern ocean biogeochemistry is susceptible to the large, abrupt shifts that characte...
Satellite-detected fluorescence reveals global physiology of ocean phytoplankton
Satellite-detected fluorescence global physiology ocean phytoplankton
2010/1/20
Phytoplankton photosynthesis links global ocean biology and climate-driven fluctuations in the physical environment. These interactions are largely expressed through changes in phytoplankton physiolog...
Estimating the storage of anthropogenic carbon in the subtropical Indian Ocean:a comparison of five different approaches
anthropogenic carbon subtropical Indian Ocean five different approaches
2010/1/19
The subtropical Indian Ocean along 32° S was for the first time simultaneously sampled in 2002 for inorganic carbon and transient tracers. The vertical distribution and inventory of anthropogenic carb...
Modelling the vertical distribution of bromoform in the upper water column of the tropical Atlantic Ocean
vertical distribution bromoform upper water column tropical Atlantic Ocean
2010/1/19
The relative importance of potential source and sink terms for bromoform (CHBr3) in the tropical Atlantic Ocean is investigated with a coupled physical-biogeochemical water column model. Bromoform pro...
Imminent ocean acidification in the Arctic projected with the NCAR global coupled carbon cycle-climate model
ocean acidification Arctic NCAR global coupled carbon cycle-climate model
2010/1/19
Ocean acidification from the uptake of anthropogenic carbon is simulated for the industrial period and IPCC SRES emission scenarios A2 and B1 with a global coupled carbon cycle-climate model. Earlier ...
Phosphorus burial in the ocean over glacial-interglacial time scales
Phosphorus burial ocean glacial-interglacial time scales
2010/1/19
The role of nutrients, such as phosphorus (P), and their impact on primary productivity and the fluctuations in atmospheric CO2 over glacial-interglacial periods are intensely debated. Suggestions as ...
Regulation of phytoplankton carbon to chlorophyll ratio by light,nutrients and temperature in the Equatorial Pacific Ocean:a basin-scale model
phytoplankton carbon chlorophyll ratio Equatorial Pacific Ocean basin-scale model
2010/1/19
The complex effects of light, nutrients and temperature lead to a variable carbon to chlorophyll (C:Chl) ratio in phytoplankton cells. Using field data collected in the Equatorial Pacific, we derived ...
The role of ocean transport in the uptake of anthropogenic CO2
role ocean transport uptake anthropogenic CO2
2010/1/19
We compare modeled oceanic carbon uptake in response to pulse CO2 emissions using a suite of global ocean models and Earth system models. In response to a CO2 pulse emission of 590 Pg C (corresponding...
Particle fluxes in the deep Eastern Mediterranean basins:the role of ocean vertical velocities
Particle fluxes Eastern Mediterranean basins ocean vertical velocities
2010/1/19
This paper analyzes the relationship between deep sedimentary fluxes and ocean current vertical velocities in an offshore area of the Ionian Sea, the deepest basin of the Eastern Mediterranean Sea. Se...
Enhanced ocean carbon storage from anaerobic alkalinity generation in coastal sediments
ocean carbon storage anaerobic alkalinity generation coastal sediments
2010/1/19
The coastal ocean is a crucial link between land, the open ocean and the atmosphere. The shallowness of the water column permits close interactions between the sedimentary, aquatic and atmospheric com...
Anthropogenic carbon distribution in the eastern South Pacific Ocean
Anthropogenic carbon distribution eastern South Pacific Ocean
2010/1/19
We present results of the CO2/carbonate system from the BIOSOPE cruise in the Eastern South Pacific Ocean, in an area not sampled previously. In particular, we present estimates of the anthropogenic c...
Sinking rates and ballast composition of particles in the Atlantic Ocean:implications for the organic carbon fluxes to the deep ocean
Sinking rates ballast composition Atlantic Ocean organic carbon fluxes deep ocean
2010/1/19
The flux of materials to the deep sea is dominated by larger, organic-rich particles with sinking rates varying between a few meters and several hundred meters per day. Mineral ballast may regulate th...