Leejiaoluomoore2012.Pdf
Science of the Total Environment 433 (2012) 427–433 Contents lists available at SciVerse ScienceDirect Science of the Total Environment journal homepage: www.elsevier.com/locate/scitotenv Estimation of submarine groundwater discharge and associated nutrient fluxes in Tolo Harbour, Hong Kong Chun Ming Lee a, Jiu Jimmy Jiao a,⁎, Xin Luo a, Willard S. Moore b a Department of Earth Sciences, The University of Hong Kong, Hong Kong, China b Department of Earth and Ocean Sciences, University of South Carolina, Columbia, SC 29208, USA article info abstract Article history: Tolo Harbour, located in the northeastern part of Hong Kong's New Territories, China, has a high frequency of algal Received 24 April 2012 blooms and red tides. An attempt was made to first quantify the submarine groundwater discharge (SGD) into Received in revised form 20 June 2012 Tolo Harbour using 226Ra, and then to estimate the nutrient fluxes into the Harbour by this pathway. The total Accepted 21 June 2012 − SGD was estimated to be 8.28×106 m3 d 1, while the fresh submarine groundwater discharge (FSGD) was esti- Available online 20 July 2012 mated to be 2.31×105 m3 d−1. This showed that a large amount of SGD was contributed by recirculated seawater rather than fresh groundwater in the Harbour. Using the SGD and groundwater nutrient information around Tolo Keywords: 6 −1 4 −1 Submarine groundwater discharge Harbour, the nutrient loading through SGD was estimated to be 1.1×10 mol d for DIN, 1.4×10 mol d for 3−– 6 −1 – fi Nutrients PO4 Pand1.4×10 mol d for SiO2 Si, which was much more signi cant than its counterpart through the Radium isotope river discharge.
[Show full text]