CORE
🇺🇦
make metadata, not war
Services
Services overview
Explore all CORE services
Access to raw data
API
Dataset
FastSync
Content discovery
Recommender
Discovery
OAI identifiers
OAI Resolver
Managing content
Dashboard
Bespoke contracts
Consultancy services
Support us
Support us
Membership
Sponsorship
Community governance
Advisory Board
Board of supporters
Research network
About
About us
Our mission
Team
Blog
FAQs
Contact us
The influence of sediment sources on radium-derived estimates of Submarine Groundwater Discharge
Authors
Joan S. Font-Muñoz
Jordi García-Orellana
Pere Masqué
Valentí Rodellas
Publication date
1 January 2015
Publisher
'Elsevier BV'
Doi
Cite
Abstract
© 2015 Elsevier B.V. The influence of sediments on the determination of SGD by using Ra isotopes was investigated in the Port of Maó (Balearic Islands, NW Mediterranean). This natural harbor was selected because SGD occurs all along its southern boundary and it is covered by fine-grained sediments that are frequently resuspended due to vessel maneuvering. Comprehensive seasonal Ra mass balances were constructed for the waters of the Port of Maó using both short-lived (224Ra) and long-lived (228Ra) Ra isotopes. SGD flows to the Port of Maó obtained by using 228Ra revealed a seasonal pattern, likely dominated by the recharge cycle, with maximum SGD rates during the wet seasons ((180±100)·103m3·day-1 in fall) and minimum flows during summer ((56±35)·103m3·day-1). The results also showed that the Ra flux from bottom sediments, through diffusion and due to releases associated to resuspension events, represented a significant source of Ra to the harbor waters. This sedimentary source accounted for a major fraction of the 224Ra supplied to the system (30-90%, depending on the season), whereas the sediment influence on the 228Ra mass balance was significantly lower (10-40%) due to its slower production rate. These findings suggested that attributing Ra inputs to the water column solely to SGD in systems covered by fine-grained sediments and/or affected by processes that favor Ra exchange across the sediment-water interface might not be accurate, requiring a detailed evaluation of the sediment sources. The inputs from sediments are often difficult to quantify, but using long-lived Ra isotopes to estimate the SGD flow may minimize the effect of a poor characterization of the sediment source.This project has been partially funded by the Spanish Government Project EHRE (ref. CTM2009-08270). V.R. acknowledges financial support through a PhD fellowship (AP2008-03044) from MICINN (Spain). Authors want to thank the support of the Generalitat de Catalunya to MERS (2014 SGR-1356). Support for the research of P.M. was received through the prize ICREA Academia, funded by the Generalitat de Catalunya and by a Gledden Visiting Fellowship awarded by the Institute of Advanced Studies at the University ofWestern AustraliaPeer Reviewe
Similar works
Full text
Open in the Core reader
Download PDF
Available Versions
HAL Descartes
See this paper in CORE
Go to the repository landing page
Download from data provider
oai:HAL:hal-01818171v1
Last time updated on 23/03/2021
Archive Ouverte en Sciences de l'Information et de la Communication
See this paper in CORE
Go to the repository landing page
Download from data provider
oai:HAL:hal-01818171v1
Last time updated on 06/08/2018
Digital.CSIC
See this paper in CORE
Go to the repository landing page
Download from data provider
oai:digital.csic.es:10261/1262...
Last time updated on 25/05/2016
Diposit Digital de Documents de la UAB
See this paper in CORE
Go to the repository landing page
Download from data provider
oai:ddd.uab.cat:241175
Last time updated on 27/09/2021
HAL AMU
See this paper in CORE
Go to the repository landing page
Download from data provider
oai:HAL:hal-01818171v1
Last time updated on 07/08/2018
HAL-INSU
See this paper in CORE
Go to the repository landing page
Download from data provider
oai:HAL:hal-01818171v1
Last time updated on 10/07/2018