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Article: 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

TitleSubmarine groundwater discharge estimation in an urbanized embayment in Hong Kong via short-lived radium isotopes and its implication of nutrient loadings and primary production
Authors
KeywordsShort-lived radium isotopes
Mass balance model
Submarine groundwater discharge
Nutrient loadings
Primary production
Issue Date2014
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/marpolbul
Citation
Marine Pollution Bulletin, 2014, v. 82 n. 1-2, p. 144-154 How to Cite?
Abstract224Ra 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 1.2–3.0 cm d−1, including lateral SGD of 5.7–7.9 cm d−1 and bottom SGD of 0.3–2.0 cm d−1. Fresh SGD is estimated to be (2.1–5.5) × 105 m3 d−1. Nutrient fluxes (mol d−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) × 106 gC d−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.
Persistent Identifierhttp://hdl.handle.net/10722/200552
ISSN
2017 Impact Factor: 3.241
2015 SCImago Journal Rankings: 1.264
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLuo, X-
dc.contributor.authorJiao, JJ-
dc.contributor.authorMoore, WS-
dc.contributor.authorLee, CM-
dc.date.accessioned2014-08-21T06:51:42Z-
dc.date.available2014-08-21T06:51:42Z-
dc.date.issued2014-
dc.identifier.citationMarine Pollution Bulletin, 2014, v. 82 n. 1-2, p. 144-154-
dc.identifier.issn0025-326X-
dc.identifier.urihttp://hdl.handle.net/10722/200552-
dc.description.abstract224Ra 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 1.2–3.0 cm d−1, including lateral SGD of 5.7–7.9 cm d−1 and bottom SGD of 0.3–2.0 cm d−1. Fresh SGD is estimated to be (2.1–5.5) × 105 m3 d−1. Nutrient fluxes (mol d−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) × 106 gC d−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.-
dc.languageeng-
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/marpolbul-
dc.relation.ispartofMarine Pollution Bulletin-
dc.subjectShort-lived radium isotopes-
dc.subjectMass balance model-
dc.subjectSubmarine groundwater discharge-
dc.subjectNutrient loadings-
dc.subjectPrimary production-
dc.titleSubmarine groundwater discharge estimation in an urbanized embayment in Hong Kong via short-lived radium isotopes and its implication of nutrient loadings and primary production-
dc.typeArticle-
dc.identifier.emailLuo, X: xinluo@hku.hk-
dc.identifier.emailJiao, JJ: jjiao@hku.hk-
dc.identifier.authorityLuo, X=rp02606-
dc.identifier.authorityJiao, JJ=rp00712-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.marpolbul.2014.03.005-
dc.identifier.pmid24703767-
dc.identifier.scopuseid_2-s2.0-84899921932-
dc.identifier.hkuros232056-
dc.identifier.volume82-
dc.identifier.issue1-2-
dc.identifier.spage144-
dc.identifier.epage154-
dc.identifier.isiWOS:000336695900033-
dc.publisher.placeUnited Kingdom-

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