File Download
  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Evaluation of Water Residence Time, Submarine Groundwater Discharge, and Maximum New Production Supported by Groundwater Borne Nutrients in a Coastal Upwelling Shelf System

TitleEvaluation of Water Residence Time, Submarine Groundwater Discharge, and Maximum New Production Supported by Groundwater Borne Nutrients in a Coastal Upwelling Shelf System
Authors
KeywordsCoastal upwelling
Eastern Hainan shelf
New production
Radium isotopes
Submarine groundwater discharge
Water residence time
Issue Date2018
PublisherAmerican Geophysical Union, co-published with Wiley. The Journal's web site is located at http://sites.agu.org/
Citation
Journal of Geophysical Research: Oceans, 2018, v. 123 n. 1, p. 631-655 How to Cite?
AbstractThe biogeochemical processes in the continental shelf systems are usually extensively influenced by coastal upwelling and submarine groundwater discharge (SGD). Using eastern Hainan upwelling shelf system as an example, this study fully investigates SGD and coastal upwelling and their effects on the coastal nutrient loadings to the mixing layer of eastern Hainan shelf. Based on the spatial distributions of 223Ra and 228Ra, water residence time is estimated to be 16.9 ± 8.9 days. Based on the mass balance models of 226Ra and 228Ra, the total SGD of the eastern Hainan shelf is estimated to be 0.8 × 108 and 1.4 × 108 m3 d−1, respectively. The groundwater borne dissolved inorganic nitrogen (DIN) and dissolved inorganic phosphate (DIP) are estimated to be up to 1121.8 and 20.4 μM m2 d−1. The coastal upwelling delivers 2741.8 μM m2 d−1 DIN and 217.7 μM m2 d−1 DIP into the mixing layer, which are predominant in all the exogenous nutrient inputs. The groundwater borne DIN will support a maximum new production of 7.5 mM C m2 d−1, about up to 24.0% of the total new production in the study area. SGD‐derived nutrient could be significant as a missing DIN to support the new production in the mixing layer of eastern Hainan shelf. The findings contribute to a better understanding of biogeochemical processes under the influences of SGD and coastal upwelling in the study area and other similar coastal upwelling systems.
Persistent Identifierhttp://hdl.handle.net/10722/264100
ISSN
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLuo, X-
dc.contributor.authorJiao, JJ-
dc.contributor.authorLiu, Y-
dc.contributor.authorZhang, X-
dc.contributor.authorLiang, W-
dc.contributor.authorTang, D-
dc.date.accessioned2018-10-22T07:49:33Z-
dc.date.available2018-10-22T07:49:33Z-
dc.date.issued2018-
dc.identifier.citationJournal of Geophysical Research: Oceans, 2018, v. 123 n. 1, p. 631-655-
dc.identifier.issn2169-9291-
dc.identifier.urihttp://hdl.handle.net/10722/264100-
dc.description.abstractThe biogeochemical processes in the continental shelf systems are usually extensively influenced by coastal upwelling and submarine groundwater discharge (SGD). Using eastern Hainan upwelling shelf system as an example, this study fully investigates SGD and coastal upwelling and their effects on the coastal nutrient loadings to the mixing layer of eastern Hainan shelf. Based on the spatial distributions of 223Ra and 228Ra, water residence time is estimated to be 16.9 ± 8.9 days. Based on the mass balance models of 226Ra and 228Ra, the total SGD of the eastern Hainan shelf is estimated to be 0.8 × 108 and 1.4 × 108 m3 d−1, respectively. The groundwater borne dissolved inorganic nitrogen (DIN) and dissolved inorganic phosphate (DIP) are estimated to be up to 1121.8 and 20.4 μM m2 d−1. The coastal upwelling delivers 2741.8 μM m2 d−1 DIN and 217.7 μM m2 d−1 DIP into the mixing layer, which are predominant in all the exogenous nutrient inputs. The groundwater borne DIN will support a maximum new production of 7.5 mM C m2 d−1, about up to 24.0% of the total new production in the study area. SGD‐derived nutrient could be significant as a missing DIN to support the new production in the mixing layer of eastern Hainan shelf. The findings contribute to a better understanding of biogeochemical processes under the influences of SGD and coastal upwelling in the study area and other similar coastal upwelling systems.-
dc.languageeng-
dc.publisherAmerican Geophysical Union, co-published with Wiley. The Journal's web site is located at http://sites.agu.org/-
dc.relation.ispartofJournal of Geophysical Research: Oceans-
dc.rightsCopyright 2018 American Geophysical Union. To view the published open abstract, go to https://doi.org/10.1002/2017JC013398-
dc.subjectCoastal upwelling-
dc.subjectEastern Hainan shelf-
dc.subjectNew production-
dc.subjectRadium isotopes-
dc.subjectSubmarine groundwater discharge-
dc.subjectWater residence time-
dc.titleEvaluation of Water Residence Time, Submarine Groundwater Discharge, and Maximum New Production Supported by Groundwater Borne Nutrients in a Coastal Upwelling Shelf System-
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.naturepublished_or_final_version-
dc.identifier.doi10.1002/2017JC013398-
dc.identifier.scopuseid_2-s2.0-85041116972-
dc.identifier.hkuros294631-
dc.identifier.volume123-
dc.identifier.issue1-
dc.identifier.spage631-
dc.identifier.epage655-
dc.identifier.isiWOS:000425589800036-
dc.publisher.placeUnited States-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats