DOI: 10.1016/j.marpolbul.2014.03.005
Scopus记录号: 2-s2.0-84899921932
论文题名: Submarine groundwater discharge estimation in an urbanized embayment in Hong Kong via short-lived radium isotopes and its implication of nutrient loadings and primary production
作者: Luo X. ; Jiao J.J. ; Moore W.S. ; Lee C.M.
刊名: Marine Pollution Bulletin
ISSN: 0025-326X
EISSN: 1879-3363
出版年: 2014
卷: 82, 期: 2018-01-02 起始页码: 144
结束页码: 154
语种: 英语
英文关键词: Mass balance model
; Nutrient loadings
; Primary production
; Short-lived radium isotopes
; Submarine groundwater discharge
Scopus关键词: Dissolution
; Groundwater
; Isotopes
; Nutrients
; Radium
; Silicates
; Mass balance model
; Nutrient loading
; Primary production
; Radium isotopes
; Submarine groundwater discharge
; Discharge (fluid mechanics)
; actinium 227
; ground water
; nitrogen
; radioisotope
; radium 223
; radium 224
; river water
; surface water
; thorium 228
; unclassified drug
; ground water
; radium
; coastal water
; discharge
; isotopic composition
; nutrient availability
; primary production
; radium isotope
; underwater environment
; article
; coastal waters
; desorption
; embayment
; environmental aspects and related phenomena
; eutrophication
; geographic and geological phenomena
; Hong Kong
; nutrient loading
; radioactivity
; radioisotope decay
; radioisotope distribution
; salinity
; source sink relationship
; submarine groundwater discharge
; chemistry
; environmental monitoring
; estuary
; eutrophication
; procedures
; river
; China
; Hong Kong
; Environmental Monitoring
; Estuaries
; Eutrophication
; Groundwater
; Hong Kong
; Radium
; Rivers
Scopus学科分类: Agricultural and Biological Sciences: Aquatic Science
; Earth and Planetary Sciences: Oceanography
; Environmental Science: Pollution
英文摘要: 224Ra and 223Ra are adopted as tracers to qualify submarine groundwater discharge (SGD) in Tolo Harbor, a highly urbanized embayment in Hong Kong. Based on the sampling data, a two-layered radium mass balance model is used to estimate lateral SGD and bottom SGD. Total SGD is estimated to be 1.2-3.0cmd-1, including lateral SGD of 5.7-7.9cmd-1 and bottom SGD of 0.3-2.0cmd-1. Fresh SGD is estimated to be (2.1-5.5)×105m3d-1. Nutrient fluxes (mold-1) from SGD are estimated to be (3-7.4)×104 (dissolved inorganic nitrogen), (2.4-6.2)×102 (dissolved inorganic phosphate) and (6.5-16)×104 (dissolved silicate). Primary productivity is estimated to be (1.5-15)×106gCd-1, 2-53% of which is supported by SGD-induced phosphate fluxes. The study indicates that SGD is a significant source of nutrients to coastal waters and may cause an obvious increase of primary production. These findings must be considered in future coastal ecological management. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/85525
Appears in Collections: 过去全球变化的重建 全球变化的国际研究计划
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作者单位: Department of Earth Sciences, The University of Hong Kong, Hong Kong; Department of Earth and Ocean Sciences, University of South Carolina, Columbia, SC, United States; The University of Hong Kong, Shenzhen Research Institude, Shenzhen, China
Recommended Citation:
Luo X.,Jiao J.J.,Moore W.S.,et al. Submarine groundwater discharge estimation in an urbanized embayment in Hong Kong via short-lived radium isotopes and its implication of nutrient loadings and primary production[J]. Marine Pollution Bulletin,2014-01-01,82(2018-01-02)