Variability of subsurface denitrification and surface productivity in the coastal eastern Arabian Sea over the past seven centuries
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منابع مشابه
First evidence of denitrification vis-à-vis monsoon in the Arabian Sea since Late Miocene
In the Arabian Sea, South Asian monsoon (SAM)-induced high surface water productivity coupled with poor ventilation of intermediate water results in strong denitrification within the oxygen minimum zone (OMZ). Despite the significance of denitrification in the Arabian Sea, we have no long-term record of its evolution spanning the past several million years. Here, we present the first record of ...
متن کاملتأثیر نوسان‌های دمای سطح آب دریای خزر بر بارش فصول زمستان و بهار نواحی شمالی و جنوب غربی ایران
The influence of the Sea Surface Temperatures (SSTs) on the seasonal precipitation over northern and southwestern parts of Iran was investigated. The warm, cold and base phases of the SSTs were defined and the median of precipitation during each of these phases (Rw, Rc and Rb, respectively) was determined. The magnitude of Rw/Rb, Rc/Rb and Rc/Rw were used as criteria for the assessment of the e...
متن کاملتأثیر نوسان‌های دمای سطح آب دریای خزر بر بارش فصول زمستان و بهار نواحی شمالی و جنوب غربی ایران
The influence of the Sea Surface Temperatures (SSTs) on the seasonal precipitation over northern and southwestern parts of Iran was investigated. The warm, cold and base phases of the SSTs were defined and the median of precipitation during each of these phases (Rw, Rc and Rb, respectively) was determined. The magnitude of Rw/Rb, Rc/Rb and Rc/Rw were used as criteria for the assessment of the e...
متن کاملDiversity of nitrite reductase genes (nirS) in the denitrifying water column of the coastal Arabian Sea
Denitrification often occurs in the water column, underlying zones of intense productivity and decomposition in upwelling regions. In the denitrifying zone off the southwest coast of India, high concentrations of nitrite (>15 μM) and nitrous oxide (>500 nM) have been reported near the sediment-water interface (<80 m). We investigated the chemical and molecular indicators of denitrification alon...
متن کاملMonthly variability in surface pCO2 and net air-sea CO2 flux in the Arabian Sea
[1] Recent studies on biogeochemical cycling of carbon in the Arabian Sea, by Joint Global Ocean Flux Study (JGOFS), revealed that the Arabian Sea is a perennial source of carbon dioxide to the atmosphere. The surface pCO2 is governed by physical processes such as water mass transports, upwelling and winter convective mixing, and associated biological processes. Hence surface pCO2 distribution ...
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تاریخ انتشار 2009