... Received: 14 December 2010 – Accepted: 27 December 2010 – Published: 18 January 2011 Correspo... more ... Received: 14 December 2010 – Accepted: 27 December 2010 – Published: 18 January 2011 Correspondence to: EJ Rochelle-Newall (emma.rochelle-newall@ird.fr) Published by Copernicus Publications on behalf of the European Geosciences Union. 488 Page 3. BGD ...
... Received: 14 December 2010 – Accepted: 27 December 2010 – Published: 18 January 2011 Correspo... more ... Received: 14 December 2010 – Accepted: 27 December 2010 – Published: 18 January 2011 Correspondence to: EJ Rochelle-Newall (emma.rochelle-newall@ird.fr) Published by Copernicus Publications on behalf of the European Geosciences Union. 488 Page 3. BGD ...
... Received: 14 December 2010 – Accepted: 27 December 2010 – Published: 18 January 2011 Correspo... more ... Received: 14 December 2010 – Accepted: 27 December 2010 – Published: 18 January 2011 Correspondence to: EJ Rochelle-Newall (emma.rochelle-newall@ird.fr) Published by Copernicus Publications on behalf of the European Geosciences Union. 488 Page 3. BGD ...
IGARSS 2001. Scanning the Present and Resolving the Future. Proceedings. IEEE 2001 International Geoscience and Remote Sensing Symposium (Cat. No.01CH37217), 2001
BONNETON, P., LEFEBVRE, J-P., BRETEL, P., OUILLON, S. and DOUILLET, P., 2007. Tidal modulation of... more BONNETON, P., LEFEBVRE, J-P., BRETEL, P., OUILLON, S. and DOUILLET, P., 2007. Tidal modulation of wave-setup and wave-induced currents on the Aboré coral reef, New Caledonia. Journal of Coastal Research, SI 50 (Proceedings of the 9th International Coastal Symposium), 762 - 766. Gold Coast, Australia, ISSN 0749.0208 As waves break on a reef, they create a radiation stress gradient that drives wave-setup and wave-induced currents. In this paper, tidally modulated wave-induced current and wave-setup are presented and analysed from field measurements performed on the Aboré coral reef in the southwest lagoon of New Caledonia. We show, in agreement with analytical models by Symonds et al (1995) and Hearn (1999), that this tidally modulated wave circulation is mainly controlled by the difference between the depth at the breakpoint and the water depth over the reef. A specific calibration of these models is proposed for the Aboré reef.
In this work, two field campaigns were performed in July 2008 (wet season) and March 2009 (dry se... more In this work, two field campaigns were performed in July 2008 (wet season) and March 2009 (dry season) to produce original data on the concentration, partition and distribution of mercury and butyltin compounds along the tropical Bach Dang Estuary located in North Vietnam (Haiphong, Red River Delta). The results demonstrate that mercury and butyltin speciation in the surface waters of this type of tropical estuary is greatly affected by the drastic changes in the seasonal conditions. During high river discharge in the wet season, there was a large estuarine input of total Hg and tributyltin, while the longer residence time of the waters during the dry season promotes increasing MMHg formation and TBT degradation. Although most of the Hg and TBT is transported into the estuary from upstream sources, tidal cycle measurements demonstrate that this estuary is a significant source of TBT and MMHg during the wet (~3 kg TBT/day) and dry (~3 g MMHg/day) seasons.
Phytoplankton diversity, primary and bacterial production, nutrients and metallic contaminants we... more Phytoplankton diversity, primary and bacterial production, nutrients and metallic contaminants were measured during the wet season (July) and dry season (March) in the Bach Dang Estuary, a sub-estuary of the Red River system, Northern Vietnam. Using canonical correspondence analysis we show that phytoplankton community structure is potentially influenced by both organometallic species (Hg and Sn) and inorganic metal (Hg) concentrations. During March, dissolved methylmercury and inorganic mercury were important factors for determining phytoplankton community composition at most of the stations. In contrast, during July, low salinity phytoplankton community composition was associated with particulate methylmercury concentrations, whereas phytoplankton community composition in the higher salinity stations was more related to dissolved inorganic mercury and dissolved mono and tributyltin concentrations. These results highlight the importance of taking into account factors other than light and nutrients, such as eco-toxic heavy metals, in understanding phytoplankton diversity and activity in estuarine ecosystems.
... Received: 14 December 2010 – Accepted: 27 December 2010 – Published: 18 January 2011 Correspo... more ... Received: 14 December 2010 – Accepted: 27 December 2010 – Published: 18 January 2011 Correspondence to: EJ Rochelle-Newall (emma.rochelle-newall@ird.fr) Published by Copernicus Publications on behalf of the European Geosciences Union. 488 Page 3. BGD ...
... Received: 14 December 2010 – Accepted: 27 December 2010 – Published: 18 January 2011 Correspo... more ... Received: 14 December 2010 – Accepted: 27 December 2010 – Published: 18 January 2011 Correspondence to: EJ Rochelle-Newall (emma.rochelle-newall@ird.fr) Published by Copernicus Publications on behalf of the European Geosciences Union. 488 Page 3. BGD ...
... Received: 14 December 2010 – Accepted: 27 December 2010 – Published: 18 January 2011 Correspo... more ... Received: 14 December 2010 – Accepted: 27 December 2010 – Published: 18 January 2011 Correspondence to: EJ Rochelle-Newall (emma.rochelle-newall@ird.fr) Published by Copernicus Publications on behalf of the European Geosciences Union. 488 Page 3. BGD ...
IGARSS 2001. Scanning the Present and Resolving the Future. Proceedings. IEEE 2001 International Geoscience and Remote Sensing Symposium (Cat. No.01CH37217), 2001
BONNETON, P., LEFEBVRE, J-P., BRETEL, P., OUILLON, S. and DOUILLET, P., 2007. Tidal modulation of... more BONNETON, P., LEFEBVRE, J-P., BRETEL, P., OUILLON, S. and DOUILLET, P., 2007. Tidal modulation of wave-setup and wave-induced currents on the Aboré coral reef, New Caledonia. Journal of Coastal Research, SI 50 (Proceedings of the 9th International Coastal Symposium), 762 - 766. Gold Coast, Australia, ISSN 0749.0208 As waves break on a reef, they create a radiation stress gradient that drives wave-setup and wave-induced currents. In this paper, tidally modulated wave-induced current and wave-setup are presented and analysed from field measurements performed on the Aboré coral reef in the southwest lagoon of New Caledonia. We show, in agreement with analytical models by Symonds et al (1995) and Hearn (1999), that this tidally modulated wave circulation is mainly controlled by the difference between the depth at the breakpoint and the water depth over the reef. A specific calibration of these models is proposed for the Aboré reef.
In this work, two field campaigns were performed in July 2008 (wet season) and March 2009 (dry se... more In this work, two field campaigns were performed in July 2008 (wet season) and March 2009 (dry season) to produce original data on the concentration, partition and distribution of mercury and butyltin compounds along the tropical Bach Dang Estuary located in North Vietnam (Haiphong, Red River Delta). The results demonstrate that mercury and butyltin speciation in the surface waters of this type of tropical estuary is greatly affected by the drastic changes in the seasonal conditions. During high river discharge in the wet season, there was a large estuarine input of total Hg and tributyltin, while the longer residence time of the waters during the dry season promotes increasing MMHg formation and TBT degradation. Although most of the Hg and TBT is transported into the estuary from upstream sources, tidal cycle measurements demonstrate that this estuary is a significant source of TBT and MMHg during the wet (~3 kg TBT/day) and dry (~3 g MMHg/day) seasons.
Phytoplankton diversity, primary and bacterial production, nutrients and metallic contaminants we... more Phytoplankton diversity, primary and bacterial production, nutrients and metallic contaminants were measured during the wet season (July) and dry season (March) in the Bach Dang Estuary, a sub-estuary of the Red River system, Northern Vietnam. Using canonical correspondence analysis we show that phytoplankton community structure is potentially influenced by both organometallic species (Hg and Sn) and inorganic metal (Hg) concentrations. During March, dissolved methylmercury and inorganic mercury were important factors for determining phytoplankton community composition at most of the stations. In contrast, during July, low salinity phytoplankton community composition was associated with particulate methylmercury concentrations, whereas phytoplankton community composition in the higher salinity stations was more related to dissolved inorganic mercury and dissolved mono and tributyltin concentrations. These results highlight the importance of taking into account factors other than light and nutrients, such as eco-toxic heavy metals, in understanding phytoplankton diversity and activity in estuarine ecosystems.
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Papers by S. Ouillon