Tracing the contributions of different nitrate sources associated with submarine groundwater discharge in coastal seawaters off Jeju Island, Korea SCIE SCOPUS
DC Field | Value | Language |
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dc.contributor.author | Park, Jihyun | - |
dc.contributor.author | Kim, Guebuem | - |
dc.contributor.author | Kim, Tae-Hoon | - |
dc.contributor.author | Rho, Tae Keun | - |
dc.contributor.author | Son, Purena | - |
dc.date.accessioned | 2024-04-04T07:30:02Z | - |
dc.date.available | 2024-04-04T07:30:02Z | - |
dc.date.created | 2024-04-04 | - |
dc.date.issued | 2024-04 | - |
dc.identifier.issn | 0304-4203 | - |
dc.identifier.uri | https://sciwatch.kiost.ac.kr/handle/2020.kiost/45472 | - |
dc.description.abstract | We measured the concentrations of dissolved inorganic nutrients and the dual isotopic composition of nitrate (δ15N-NO3− and δ18O-NO3−) in coastal waters off Jeju, a volcanic island in Korea, to trace its main sources. Sampling of seawater and fresh groundwater was conducted in four different coastal areas of Jeju Island: Haengwon (HW), Pyoseon (PS), Ilgwa (IG), and Sagye (SG) in May 2020 and 2021. The significant negative correlations between NO3− and salinity in the four areas indicate that the main source of NO3− is fresh submarine groundwater discharge (FSGD), with the extrapolated fresh groundwater endmember values ranging from 170 to 300 μM (δ15N-NO3−: 4.1–10.8 and δ18O-NO3−: 1.7–6.4). The actual sources of SGD-driven NO3− in these coastal waters were determined using a bi-plot diagram (δ15N-NO3− vs. δ18O-NO3−) and a Bayesian stable isotope mixing model (MixSIAR). The results showed that, besides the background contribution from open-ocean waters, the main sources of NO3− in HW were fertilizer (69 ± 5%) and manure and sewage (24 ± 7%) and those in PS, IG, and SG were manure and sewage (PS: 53 ± 11%, IG: 57 ± 12%, SG: 63 ± 13%) and fertilizer (PS: 27 ± 8%, IG: 24 ± 5%, SG: 22 ± 5%). Our extrapolation approach for NO3− dual isotopes provides a better way to evaluate the main sources of NO3− in coastal waters off volcanic islands where SGD-driven NO3− is significant, but its actual source groundwater cannot be located. © 2024 Elsevier B.V. | - |
dc.description.uri | 1 | - |
dc.language | English | - |
dc.publisher | Elsevier BV | - |
dc.title | Tracing the contributions of different nitrate sources associated with submarine groundwater discharge in coastal seawaters off Jeju Island, Korea | - |
dc.type | Article | - |
dc.citation.title | Marine Chemistry | - |
dc.citation.volume | 261 | - |
dc.contributor.alternativeName | 노태근 | - |
dc.contributor.alternativeName | 손푸르나 | - |
dc.identifier.bibliographicCitation | Marine Chemistry, v.261 | - |
dc.identifier.doi | 10.1016/j.marchem.2024.104382 | - |
dc.identifier.scopusid | 2-s2.0-85188927591 | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.subject.keywordAuthor | Nitrate stable isotopes | - |
dc.subject.keywordAuthor | Submarine groundwater discharge | - |
dc.subject.keywordAuthor | Coastal ocean | - |
dc.subject.keywordAuthor | Nitrate pollution | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |