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Filters Contacts (Less) Md Shahriar Pervez Earth Resources Observation and Science (EROS) Center Geoffrey M Henebry Ahmed, Nasir Breit, George N Foster, Andrea L Land Resources Majumder, Ratan K Stollenwerk, Kenneth G U.S. Geological Survey - ScienceBase Uddin, M Nehal Welch, Alan H Whitney, John W Yount, James C View Results as: JSON ATOM CSV

Arsenic attenuation by oxidized aquifer sediments in Bangladesh Recognition of arsenic (As) contamination of shallow fluvio-deltaic aquifers in the Bengal Basin has resulted in increasing exploitation of groundwater from deeper aquifers that generally contain low concentrations of dissolved As. Pumping-induced infiltration of high-As groundwater could eventually cause As concentrations in these aquifers to increase. This study investigates the adsorption capacity for As of sediment from a low-As aquifer near Dhaka, Bangladesh. A shallow, chemically-reducing aquifer at this site extends to a depth of 50 m and has maximum As concentrations in groundwater of 900 μg/L. At depths greater than 50 m, geochemical conditions are more oxidizing and groundwater has < 5 μg/L As. There is... Categories: Publication; Types: Citation; Tags: Arsenic, Bangladesh, Natural remediation, adsorption Differential Heating in the Indian Ocean Differentially Modulates Precipitation in the Ganges and Brahmaputra Basins This dataset provides an assessment of the differential heating in the Indian Ocean (IO) and the subsequent modulation of the Ganges and Brahmaputra precipitation. Indo-Pacific sea surface temperature dynamics play a prominent role in Asian summer monsoon variability. Using 28 years of remote sensing observations, we demonstrate that (i) the tropical west-east differential heating in the IO influences the Ganges precipitation and (ii) the north-south differential heating in the IO influences the Brahmaputra precipitation. The El Niño phase induces warming in the warm pool of the IO and exerts more influence on Ganges precipitation than Brahmaputra precipitation. The analyses indicate that both the magnitude and... Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Bangladesh, Bhutan, Brahmaputra basin, Brahmaputra precipitation, Differential heating index, All tags... El Niño, Ganges basin, Ganges precipitation, Geopotential height, India, Indian Ocean, Indian Ocean, Indian Ocean dipole, La Niña, Nepal, Outgoing longwave radiation, Sea surface temperature, Fewer tags