Basu A R, Jacobsen S B, Poreda R J, Dowling C B, Aggarwal P K
Department of Earth and Environmental Sciences, University of Rochester, Rochester, NY 14627, USA.
Science. 2001 Aug 24;293(5534):1470-3. doi: 10.1126/science.1060524.
Strontium concentration and isotopic data for subsurface flowing groundwaters of the Ganges-Brahmaputra (G-B) delta in the Bengal Basin demonstrate that this is a potentially significant source of strontium to the oceans, equal in magnitude to the dissolved strontium concentration carried to the oceans by the G-B river waters. The strontium concentrations of groundwaters are higher by a factor of about 10 than typical G-B river waters and they have similar 87Sr/86Sr ratio to the river waters. These new data suggest that the present contribution of the G-B system to the rise in 87Sr/86Sr ratio in seawater is higher by at least a factor of 2 to 5 than the average over the past 40 million years.
孟加拉盆地恒河-布拉马普特拉河（G-B）三角洲地下流动的地下水中的锶浓度和同位素数据表明，这是海洋中锶的一个潜在重要来源，其数量与G-B河流水带入海洋的溶解锶浓度相当。地下水的锶浓度比典型的G-B河水高出约10倍，并且它们与河水具有相似的87Sr/86Sr比值。这些新数据表明，G-B系统目前对海水中87Sr/86Sr比值上升的贡献比过去4000万年的平均值至少高出2至5倍。
