Dynamics of coarse particulate matter in the turbidity maximum zone of the Gironde Estuary |
| |
Institution: | 1. Université de Bordeaux, EPOC, UMR 5805, 33400 Talence, France;2. EDF R&D–LNHE, 6, quai Watier, 78401 Chatou, France;3. CNRS, EPOC, UMR 5805, 33400 Talence, France;4. Irstea–groupement de Bordeaux, 50, avenue de Verdun-Gazinet, 33612 Cestas, France |
| |
Abstract: | There is a lack of studies devoted to coarse particulate matter (CPM) in estuaries, although this fraction can disturb activities that filter large volumes of water, such as industrial or fishery activities. In the macrotidal and highly-turbid Gironde Estuary, a monthly sampling of CPM was performed in 2011 and 2013 at two stations in the Turbidity Maximum Zone (TMZ) to understand its seasonal, tidal and hydrological dynamics. Regardless of the season and station, low quantities of CPM (few g m?3) were observed in comparison with suspended particulate matter (several 103 g m?3). The highest concentrations were consistently recorded in bottom waters and at the upstream station. Whereas there is no clear link between the CPM present in the column water and spring or neap tides, an increase in the CPM size has been identified at the two stations after a flood event, fact potentially critical regarding filtering functioning of estuarine activities. |
| |
Keywords: | Gironde Estuary Coarse Particulate Matter (CPM) Coarse Particulate Organic Carbon (CPOC) Concentrations Budgets |
本文献已被 ScienceDirect 等数据库收录! |
|