Articles | Volume 19, issue 6
https://doi.org/10.5194/hess-19-2805-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/hess-19-2805-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Turbidity in the fluvial Gironde Estuary (southwest France) based on 10-year continuous monitoring: sensitivity to hydrological conditions
I. Jalón-Rojas
UMR5805 EPOC, CNRS-Université de Bordeaux, Pessac, France
Invited contribution by I. Jalón-Rojas, recipient of the EGU Outstanding Student Poster Award 2014.
S. Schmidt
UMR5805 EPOC, CNRS-Université de Bordeaux, Pessac, France
A. Sottolichio
UMR5805 EPOC, CNRS-Université de Bordeaux, Pessac, France
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Sabine Schmidt and Ibrahima Iris Diallo
Biogeosciences, 21, 1785–1800, https://doi.org/10.5194/bg-21-1785-2024, https://doi.org/10.5194/bg-21-1785-2024, 2024
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Along the French coast facing the Bay of Biscay, the large Gironde and Loire estuaries suffer from hypoxia. This prompted a study of the small Charente estuary located between them. This work reveals a minimum oxygen zone in the Charente estuary, which extends for about 25 km. Temperature is the main factor controlling the hypoxia. This calls for the monitoring of small turbid macrotidal estuaries that are vulnerable to hypoxia, a risk expected to increase with global warming.
Kate E. Ashley, Xavier Crosta, Johan Etourneau, Philippine Campagne, Harry Gilchrist, Uthmaan Ibraheem, Sarah E. Greene, Sabine Schmidt, Yvette Eley, Guillaume Massé, and James Bendle
Biogeosciences, 18, 5555–5571, https://doi.org/10.5194/bg-18-5555-2021, https://doi.org/10.5194/bg-18-5555-2021, 2021
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We explore the potential for the use of carbon isotopes of algal fatty acid as a new proxy for past primary productivity in Antarctic coastal zones. Coastal polynyas are hotspots of primary productivity and are known to draw down CO2 from the atmosphere. Reconstructions of past productivity changes could provide a baseline for the role of these areas as sinks for atmospheric CO2.
Philippe Massicotte, Rainer M. W. Amon, David Antoine, Philippe Archambault, Sergio Balzano, Simon Bélanger, Ronald Benner, Dominique Boeuf, Annick Bricaud, Flavienne Bruyant, Gwenaëlle Chaillou, Malik Chami, Bruno Charrière, Jing Chen, Hervé Claustre, Pierre Coupel, Nicole Delsaut, David Doxaran, Jens Ehn, Cédric Fichot, Marie-Hélène Forget, Pingqing Fu, Jonathan Gagnon, Nicole Garcia, Beat Gasser, Jean-François Ghiglione, Gaby Gorsky, Michel Gosselin, Priscillia Gourvil, Yves Gratton, Pascal Guillot, Hermann J. Heipieper, Serge Heussner, Stanford B. Hooker, Yannick Huot, Christian Jeanthon, Wade Jeffrey, Fabien Joux, Kimitaka Kawamura, Bruno Lansard, Edouard Leymarie, Heike Link, Connie Lovejoy, Claudie Marec, Dominique Marie, Johannie Martin, Jacobo Martín, Guillaume Massé, Atsushi Matsuoka, Vanessa McKague, Alexandre Mignot, William L. Miller, Juan-Carlos Miquel, Alfonso Mucci, Kaori Ono, Eva Ortega-Retuerta, Christos Panagiotopoulos, Tim Papakyriakou, Marc Picheral, Louis Prieur, Patrick Raimbault, Joséphine Ras, Rick A. Reynolds, André Rochon, Jean-François Rontani, Catherine Schmechtig, Sabine Schmidt, Richard Sempéré, Yuan Shen, Guisheng Song, Dariusz Stramski, Eri Tachibana, Alexandre Thirouard, Imma Tolosa, Jean-Éric Tremblay, Mickael Vaïtilingom, Daniel Vaulot, Frédéric Vaultier, John K. Volkman, Huixiang Xie, Guangming Zheng, and Marcel Babin
Earth Syst. Sci. Data, 13, 1561–1592, https://doi.org/10.5194/essd-13-1561-2021, https://doi.org/10.5194/essd-13-1561-2021, 2021
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The MALINA oceanographic expedition was conducted in the Mackenzie River and the Beaufort Sea systems. The sampling was performed across seven shelf–basin transects to capture the meridional gradient between the estuary and the open ocean. The main goal of this research program was to better understand how processes such as primary production are influencing the fate of organic matter originating from the surrounding terrestrial landscape during its transition toward the Arctic Ocean.
Philippe Massicotte, Rémi Amiraux, Marie-Pier Amyot, Philippe Archambault, Mathieu Ardyna, Laurent Arnaud, Lise Artigue, Cyril Aubry, Pierre Ayotte, Guislain Bécu, Simon Bélanger, Ronald Benner, Henry C. Bittig, Annick Bricaud, Éric Brossier, Flavienne Bruyant, Laurent Chauvaud, Debra Christiansen-Stowe, Hervé Claustre, Véronique Cornet-Barthaux, Pierre Coupel, Christine Cox, Aurelie Delaforge, Thibaud Dezutter, Céline Dimier, Florent Domine, Francis Dufour, Christiane Dufresne, Dany Dumont, Jens Ehn, Brent Else, Joannie Ferland, Marie-Hélène Forget, Louis Fortier, Martí Galí, Virginie Galindo, Morgane Gallinari, Nicole Garcia, Catherine Gérikas Ribeiro, Margaux Gourdal, Priscilla Gourvil, Clemence Goyens, Pierre-Luc Grondin, Pascal Guillot, Caroline Guilmette, Marie-Noëlle Houssais, Fabien Joux, Léo Lacour, Thomas Lacour, Augustin Lafond, José Lagunas, Catherine Lalande, Julien Laliberté, Simon Lambert-Girard, Jade Larivière, Johann Lavaud, Anita LeBaron, Karine Leblanc, Florence Le Gall, Justine Legras, Mélanie Lemire, Maurice Levasseur, Edouard Leymarie, Aude Leynaert, Adriana Lopes dos Santos, Antonio Lourenço, David Mah, Claudie Marec, Dominique Marie, Nicolas Martin, Constance Marty, Sabine Marty, Guillaume Massé, Atsushi Matsuoka, Lisa Matthes, Brivaela Moriceau, Pierre-Emmanuel Muller, Christopher-John Mundy, Griet Neukermans, Laurent Oziel, Christos Panagiotopoulos, Jean-Jacques Pangrazi, Ghislain Picard, Marc Picheral, France Pinczon du Sel, Nicole Pogorzelec, Ian Probert, Bernard Quéguiner, Patrick Raimbault, Joséphine Ras, Eric Rehm, Erin Reimer, Jean-François Rontani, Søren Rysgaard, Blanche Saint-Béat, Makoto Sampei, Julie Sansoulet, Catherine Schmechtig, Sabine Schmidt, Richard Sempéré, Caroline Sévigny, Yuan Shen, Margot Tragin, Jean-Éric Tremblay, Daniel Vaulot, Gauthier Verin, Frédéric Vivier, Anda Vladoiu, Jeremy Whitehead, and Marcel Babin
Earth Syst. Sci. Data, 12, 151–176, https://doi.org/10.5194/essd-12-151-2020, https://doi.org/10.5194/essd-12-151-2020, 2020
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The Green Edge initiative was developed to understand the processes controlling the primary productivity and the fate of organic matter produced during the Arctic spring bloom (PSB). In this article, we present an overview of an extensive and comprehensive dataset acquired during two expeditions conducted in 2015 and 2016 on landfast ice southeast of Qikiqtarjuaq Island in Baffin Bay.
Katixa Lajaunie-Salla, Aldo Sottolichio, Sabine Schmidt, Xavier Litrico, Guillaume Binet, and Gwenaël Abril
Nat. Hazards Earth Syst. Sci., 19, 2551–2564, https://doi.org/10.5194/nhess-19-2551-2019, https://doi.org/10.5194/nhess-19-2551-2019, 2019
Flor Vermassen, Nanna Andreasen, David J. Wangner, Nicolas Thibault, Marit-Solveig Seidenkrantz, Rebecca Jackson, Sabine Schmidt, Kurt H. Kjær, and Camilla S. Andresen
Clim. Past, 15, 1171–1186, https://doi.org/10.5194/cp-15-1171-2019, https://doi.org/10.5194/cp-15-1171-2019, 2019
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By studying microfossils from sediments in Upernavik Fjord we investigate the role of ocean warming on the retreat of Upernavik Isstrøm during the past ~90 years. The reconstruction of Atlantic-derived waters shows a pattern similar to that of the Atlantic Multidecadal Oscillation, corroborating previous studies. The response of Upernavik Isstrøm to ocean forcing has been variable in the past, but the current retreat may be temporarily tempered by cooling bottom waters in the coming decade.
Eleanor Georgiadis, Jacques Giraudeau, Philippe Martinez, Patrick Lajeunesse, Guillaume St-Onge, Sabine Schmidt, and Guillaume Massé
Clim. Past, 14, 1991–2010, https://doi.org/10.5194/cp-14-1991-2018, https://doi.org/10.5194/cp-14-1991-2018, 2018
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We present our results from a radiocarbon-dated core collected in central Nares Strait, NW Greenland. Sedimentological and geochemical data reveal that marine sedimentation began ca. 9.0 cal ka BP with the complete opening of the strait occurring at 8.3 cal ka BP. The collapse of the glacial buttress in central Nares Strait led to accelerated glacial fluxes of the bordering ice sheets between 8.3 and 7.5 cal ka BP, while the Humboldt Glacier retreated in eastern Kane Basin ca. 8.1 cal ka BP.
G. Milzer, J. Giraudeau, S. Schmidt, F. Eynaud, and J. Faust
Clim. Past, 10, 305–323, https://doi.org/10.5194/cp-10-305-2014, https://doi.org/10.5194/cp-10-305-2014, 2014
Related subject area
Subject: Coasts and Estuaries | Techniques and Approaches: Instruments and observation techniques
River plastic transport affected by tidal dynamics
Monitoring tidal hydrology in coastal wetlands with the “Mini Buoy”: applications for mangrove restoration
Combining resistivity and frequency domain electromagnetic methods to investigate submarine groundwater discharge in the littoral zone
Combining continuous spatial and temporal scales for SGD investigations using UAV-based thermal infrared measurements
Analysis of data characterizing tide and current fluxes in coastal basins
Assessing land–ocean connectivity via submarine groundwater discharge (SGD) in the Ria Formosa Lagoon (Portugal): combining radon measurements and stable isotope hydrology
Can mussels be used as sentinel organisms for characterization of pollution in urban water systems?
Flooding in river mouths: human caused or natural events? Five centuries of flooding events in the SW Netherlands, 1500–2000
Determining slack tide with a GPS receiver on an anchored buoy
Ground-penetrating radar insight into a coastal aquifer: the freshwater lens of Borkum Island
Seasonal stratification and property distributions in a tropical estuary (Cochin estuary, west coast, India)
Suspended sediment load in the tidal zone of an Indonesian river
Deepwater Horizon oil spill impacts on Alabama beaches
Monitoring water quality in estuarine environments: lessons from the MAGEST monitoring program in the Gironde fluvial-estuarine system
Louise J. Schreyers, Tim H. M. van Emmerik, Thanh-Khiet L. Bui, Khoa L. van Thi, Bart Vermeulen, Hong-Q. Nguyen, Nicholas Wallerstein, Remko Uijlenhoet, and Martine van der Ploeg
Hydrol. Earth Syst. Sci., 28, 589–610, https://doi.org/10.5194/hess-28-589-2024, https://doi.org/10.5194/hess-28-589-2024, 2024
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River plastic emissions into the ocean are of global concern, but the transfer dynamics between fresh water and the marine environment remain poorly understood. We developed a simple Eulerian approach to estimate the net and total plastic transport in tidal rivers. Applied to the Saigon River, Vietnam, we found that net plastic transport amounted to less than one-third of total transport, highlighting the need to better integrate tidal dynamics in plastic transport and emission models.
Thorsten Balke, Alejandra Vovides, Christian Schwarz, Gail L. Chmura, Cai Ladd, and Mohammad Basyuni
Hydrol. Earth Syst. Sci., 25, 1229–1244, https://doi.org/10.5194/hess-25-1229-2021, https://doi.org/10.5194/hess-25-1229-2021, 2021
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Restoration of intertidal wetlands such as mangroves and saltmarshes requires accurate local data on tidal flooding and current velocities. We present the application of a low-cost underwater float equipped with an acceleration data logger, the Mini Buoy, to monitor inundation and tidal currents in intertidal environments. We demonstrate how this tool can be directly applied in hydrological site suitability assessments prior to mangrove restoration in tropical SE Asia.
Marieke Paepen, Daan Hanssens, Philippe De Smedt, Kristine Walraevens, and Thomas Hermans
Hydrol. Earth Syst. Sci., 24, 3539–3555, https://doi.org/10.5194/hess-24-3539-2020, https://doi.org/10.5194/hess-24-3539-2020, 2020
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Fresh groundwater can flow to oceans and seas, possibly adding nutrients and pollutants to coastal ecosystems. For the first time, three complementary (salinity-sensitive) geophysical methods are combined to delineate the outflow in a very dynamic coastal environment. This provides temporal and spatial information on the salt- and freshwater distribution on land, in the intertidal zone, and offshore and visualizes the fresh-groundwater discharge around the low-water line at De Westhoek, Belgium.
Ulf Mallast and Christian Siebert
Hydrol. Earth Syst. Sci., 23, 1375–1392, https://doi.org/10.5194/hess-23-1375-2019, https://doi.org/10.5194/hess-23-1375-2019, 2019
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Submarine groundwater discharge is highly variable in spatial and temporal terms. With a novel approach using a hovering drone over a predefined location which recorded 670 surface temperatures images over a period of 167 s, we are able to (i) enhance focused SGD patterns otherwise camouflaged by strong lateral flow dynamics, (ii) show size variation of up to 155 % (focused SGD) and 600 % (diffuse SGD), and (iii) reveal short-term periodicity of the order of 20 to 78 s for diffuse SGD.
Elvira Armenio, Francesca De Serio, and Michele Mossa
Hydrol. Earth Syst. Sci., 21, 3441–3454, https://doi.org/10.5194/hess-21-3441-2017, https://doi.org/10.5194/hess-21-3441-2017, 2017
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The paper aims to investigate current and tide correlation in a basin named Mar Piccolo, located in the inner part of the Ionian Sea. It is considered highly vulnerable, being exposed to urban and industrial discharges as well as to intense naval traffic. A continuous monitoring action of the principal hydrodynamic parameters could be a useful managing tool, considering that the diffusion and dispersions of polluting tracers is strictly connected to currents, tide, and waves propagation.
Carlos Rocha, Cristina Veiga-Pires, Jan Scholten, Kay Knoeller, Darren R. Gröcke, Liliana Carvalho, Jaime Anibal, and Jean Wilson
Hydrol. Earth Syst. Sci., 20, 3077–3098, https://doi.org/10.5194/hess-20-3077-2016, https://doi.org/10.5194/hess-20-3077-2016, 2016
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We combine radon and stable isotopes in water to determine total submarine groundwater discharge (SGD) in the Ria Formosa and discriminate its component modes. We show that tidal action filters the entire water volume in the lagoon through local beaches 3.5 times a year, driving an estimated 350Ton nitrogen/year into the system. Conversely, fresh groundwater is discharged into the lagoon only occasionally, adding ~ 61 Ton nitrogen/year, but is capable of driving new production in the system.
Elke S. Reichwaldt and Anas Ghadouani
Hydrol. Earth Syst. Sci., 20, 2679–2689, https://doi.org/10.5194/hess-20-2679-2016, https://doi.org/10.5194/hess-20-2679-2016, 2016
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We assessed if nitrogen stable isotopes in mussels are a suitable indicator, capable of resolving spatial and temporal variability of nutrient pollution in an urban estuary. Our results highlight the value of using stable isotope analysis as an integrative tool to establish an understanding of local processes and pollution levels in theses urban aquatic systems. We suggest that mussels can become a robust tool for the detection of emerging anthropogenic pollutants of concern in urban water systems.
A. M. J. de Kraker
Hydrol. Earth Syst. Sci., 19, 2673–2684, https://doi.org/10.5194/hess-19-2673-2015, https://doi.org/10.5194/hess-19-2673-2015, 2015
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Natural floodings caused by storm floods also have important human components determining how disastrous they could be.
Man-made floodings during warfare were only successful if natural conditions and factors were fully used.
Strategic floodings during the 16th-17th centuries dramatically changed landscapes, from which valueble lessons were learnt to perfect this strategy in the 18th and 19th centuries.
M. Valk, H. H. G. Savenije, C. C. J. M. Tiberius, and W. M. J. Luxemburg
Hydrol. Earth Syst. Sci., 18, 2599–2613, https://doi.org/10.5194/hess-18-2599-2014, https://doi.org/10.5194/hess-18-2599-2014, 2014
J. Igel, T. Günther, and M. Kuntzer
Hydrol. Earth Syst. Sci., 17, 519–531, https://doi.org/10.5194/hess-17-519-2013, https://doi.org/10.5194/hess-17-519-2013, 2013
A. Shivaprasad, J. Vinita, C. Revichandran, P. D. Reny, M. P. Deepak, K. R. Muraleedharan, and K. R. Naveen Kumar
Hydrol. Earth Syst. Sci., 17, 187–199, https://doi.org/10.5194/hess-17-187-2013, https://doi.org/10.5194/hess-17-187-2013, 2013
F. A. Buschman, A. J. F. Hoitink, S. M. de Jong, P. Hoekstra, H. Hidayat, and M. G. Sassi
Hydrol. Earth Syst. Sci., 16, 4191–4204, https://doi.org/10.5194/hess-16-4191-2012, https://doi.org/10.5194/hess-16-4191-2012, 2012
J. S. Hayworth, T. P. Clement, and J. F. Valentine
Hydrol. Earth Syst. Sci., 15, 3639–3649, https://doi.org/10.5194/hess-15-3639-2011, https://doi.org/10.5194/hess-15-3639-2011, 2011
H. Etcheber, S. Schmidt, A. Sottolichio, E. Maneux, G. Chabaux, J.-M. Escalier, H. Wennekes, H. Derriennic, M. Schmeltz, L. Quéméner, M. Repecaud, P. Woerther, and P. Castaing
Hydrol. Earth Syst. Sci., 15, 831–840, https://doi.org/10.5194/hess-15-831-2011, https://doi.org/10.5194/hess-15-831-2011, 2011
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Short summary
This study aims to analyse for the first time suspended sediment dynamics in the fluvial Gironde through a unique set of a 10-year continuous turbidity record. We demonstrate the following: the interest of turbidity-discharge hysteresis loops to evaluate the presence of sediment depositions; the relationships between features of the turbidity maximum zone (TMZ) and river flow; and the definition of hydrological indicators of the persistence and concentration of the TMZ.
This study aims to analyse for the first time suspended sediment dynamics in the fluvial Gironde...