TY - JOUR
T1 - Tracing freshwater plume migration in the estuary after a typhoon event using Sr isotopic ratios
AU - Huang, Kuo Fang
AU - You, Chen Feng
PY - 2007/1/28
Y1 - 2007/1/28
N2 - Tracing the flow of estuarine water into the coastal ocean is complicated due to intense regional mixing and hydro-morphological restrictions. Here we apply high precision 87Sr/86Sr measurements (2σ = ±3 ppm) in estuarine waters, together with dissolved Ba and Mn, to trace freshened plumes after Typhoon Toraji. Small, but distinguishable Sr isotopic variations are detected in the Kao-ping Estuary, where Δ 87 Sr varied up to 50 ppm. On the basis of these geochemical constraints, two distinct sources with high Δ87 Sr are identified, which subsequently mixed with the South China Sea Surface Water. The most radiogenic Sr source can be attributed to enhanced water-sediment interactions generated by the typhoon. An additional source of high 87Sr/86Sr is attributable to redox-transformation of suspended particles due to variations in river discharges.
AB - Tracing the flow of estuarine water into the coastal ocean is complicated due to intense regional mixing and hydro-morphological restrictions. Here we apply high precision 87Sr/86Sr measurements (2σ = ±3 ppm) in estuarine waters, together with dissolved Ba and Mn, to trace freshened plumes after Typhoon Toraji. Small, but distinguishable Sr isotopic variations are detected in the Kao-ping Estuary, where Δ 87 Sr varied up to 50 ppm. On the basis of these geochemical constraints, two distinct sources with high Δ87 Sr are identified, which subsequently mixed with the South China Sea Surface Water. The most radiogenic Sr source can be attributed to enhanced water-sediment interactions generated by the typhoon. An additional source of high 87Sr/86Sr is attributable to redox-transformation of suspended particles due to variations in river discharges.
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U2 - 10.1029/2006GL028253
DO - 10.1029/2006GL028253
M3 - Article
AN - SCOPUS:34548017017
SN - 0094-8276
VL - 34
JO - Geophysical Research Letters
JF - Geophysical Research Letters
IS - 2
M1 - L02403
ER -