搜索结果: 1-8 共查到“地球科学总论 Upwelling”相关记录8条 . 查询时间(0.079 秒)
Chemolithoautotrophic production mediating the cycling of the greenhouse gases N2O and CH4 in an upwelling ecosystem
Chemolithoautotrophic production the greenhouse gases N2O and CH4 an upwelling ecosystem
2010/1/21
The high availability of electron donors occurring in coastal upwelling ecosystems with marked oxyclines favours chemoautotrophy, in turn leading to high N2O and CH4 cycling associated with aerobic NH...
Methane emissions from the upwelling area off Mauritania (NW Africa)
Methane emissions upwelling area Mauritania
2010/1/18
Coastal upwelling regions have been identified as sites of enhanced CH4 emissions to the atmosphere. The coastal upwelling area off Mauritania (NW Africa) is one of the most biologically productive re...
Manganese content records seasonal upwelling in Lake Tanganyika mussels
Manganese content records seasonal upwelling Lake Tanganyika mussels
2010/1/14
Biogenic productivity of Lake Tanganyika is highly dependent on seasonal upwellings of cold, oxygen-depleted, nutrient-rich deep waters. We investigated the shell of freshwater bivalve Pleiodon spekii...
Modelling an alkenone-like proxy record in the NW African upwelling
Modelling alkenone-like proxy record NW African upwelling
2010/1/13
A regional biogeochemical model is applied to the NW African coastal upwelling between 19° N and 27° N to investigate how a water temperature proxy, alkenones, are produced at the sea surface and reco...
El Niño and similar perturbation effects on the benthos of the Humboldt, California, and Benguela Current upwelling ecosystems
El Niñ o similar perturbation effects Benguela Current upwelling ecosystems
2010/1/25
To a certain degree, Eastern Boundary Current (EBC) ecosystems are similar: Cold bottom water from moderate depths, rich in nutrients, is transported to the euphotic zone by a combination of trade win...
Inter-annual variability of the Pelagic-Benthic coupling in the upwelling system off central Chile
the Pelagic-Benthic coupling the upwelling system central Chile
2010/1/25
The coastal region of central Chile (36° S) is one of the most productive coastal systems, characterized by a marked seasonality in the upwelling regime, that brings subsurface waters rich in nutrient...
Anoxic sediments off Central Peru record interannual to multidecadal changes of climate and upwelling ecosystem during the last two centuries
Anoxic sediments Central Peru record climate and upwelling ecosystem the last two centuries
2010/1/25
Observations under polarized microscope show that light laminae are dominated by more dense, detrital and terrigenous material, while dark laminae are less dense with greater concentrations of amorpho...
Diatoms and their influence on the biologically mediated uptake of atmospheric CO2 in the Arabian Sea upwelling system
Diatoms biologically mediated uptake atmospheric CO2 Sea upwelling system
2010/1/13
Sediment trap experiments have been carried out in order to study processes controlling shifts from diatom to non-diatom dominated systems in the western Arabian Sea. One of our major problems was to ...