TY - JOUR
T1 - Wetland-estuarine-shelf interactions in the Plum Island Sound and Merrimack River in the Massachusetts coast
JF - Journal of Geophysical Research
Y1 - 2010
A1 - Zhao, L.
A1 - Chen, C.
A1 - Vallino, J.J.
A1 - Hopkinson, C.
A1 - Beardsley, R.C.
A1 - Lin, H.
A1 - Lerczak, J.
KW - disturbance
KW - estuaries
KW - hydrodynamics
KW - PIE
KW - PIE LTER
VL - 115
IS - C10(C10039))
ER -
TY - JOUR
T1 - A numerical study of tidal asymmetry in Okatee Creek, South Carolina
JF - Estuarine Coastal and Shelf Science
Y1 - 2008
A1 - Huang, H.
A1 - Chen, C.
A1 - Blanton, Jackson O.
A1 - Andrade, Francisco.
KW - ebb dominance
KW - fvcom
KW - GCE
KW - intertidal salt marsh
KW - numerical simulation
KW - okatee creek
KW - tidal asymmetry
AB - The Okatee River, South Carolina is characterized by a narrow tidal channel and an extensive area of intertidal salt marshes. Current mea- surements in the upstream portion Okatee Creek show that tidal flow features an asymmetric pattern: ebb current is stronger than flood current. The ebb dominance is mainly caused by deformation of the dominant astronomical tidal constituent M2. An unstructured grid, finite volume coastal ocean model (FVCOM) with wet-dry point treatment method is applied to examine physical mechanisms of M4 overtide generation. Modelexperimentsshowthatmeanabsoluteamplitudeandphaseerrorsare3.1cmand1.7 forM2elevation,2.4cms1and0.8 forM2current major axis, 2.1 cm and 1.8 for M4 elevation, and 2.1 cm s1 and 24.6 for M4 current major axis. The overall pattern of tidal asymmetry is qualitatively reproduced. Various sensitivity experiments suggest that the generation of M4 overtide is a result of nonlinear interaction of tidal currents with irregular creek geometry and bottom topography. Consistent with the classical view, the large volume of intertidal water storage is the major reason for ebb dominance in the creek. However, the zero-inertia assumption (i.e., negligible advective terms) is probably not valid for the entire tidal cycle. Besides the pressure gradient force and the bottom friction force, terms related to lateral shear of the along-estuary velocity (i.e., advective inertia and horizontal eddy viscosity) may also contribute in horizontal momentum balance. Exclusion of the flooding-draining processes over the intertidal zone will severely underestimate tidal currents in the river channel and make the tidal asymmetry less prominent. Published by Elsevier Ltd.
VL - 78
UR - http://dx.doi.org/10.1016/j.ecss.2007.11.027
ER -
TY - JOUR
T1 - Mercury contamination in forest and freshwater ecosystems in the northeastern United States
JF - BioScience
Y1 - 2007
A1 - Driscoll, C.T.
A1 - Han, Y. J.
A1 - Chen, C.
A1 - Evers, D. C.
A1 - Lambert, K. F.
A1 - Holsen, T. M.
A1 - Kamman, N. C.
A1 - Munson, R. K.
KW - HBR
VL - 1
ER -
TY - JOUR
T1 - Mercury matters: Linking mercury science with public policy in the northeastern United States
JF - Hubbard Brook Research Foundation, Science Links Publication
Y1 - 2007
A1 - Driscoll, C.T.
A1 - Clair, T.
A1 - Munson, R.
A1 - Evers, D.
A1 - Lambert, K. F.
A1 - Kamman, N.
A1 - Holsen, T.
A1 - Han, Y. J.
A1 - Chen, C.
A1 - Goodale, W.
A1 - Butler, T.
KW - HBR
VL - 1
IS - 3
ER -
TY - JOUR
T1 - A modeling study of the Satilla River estuary, Georgia. II: Suspended sediment
JF - Estuaries
Y1 - 2003
A1 - Zheng, L.
A1 - Chen, C.
A1 - Alber, Merryl.
A1 - Liu, H.
KW - estuary
KW - GCE
KW - modelling
KW - satilla
KW - sediment
AB - A three-dimensional (3-D) suspended sediment model was coupled with a 3-D hydrodynamic numerical model and used to examine the spatial and temporal distribution of suspended sediments in the Satilla River estuary of Georgia. The hydrodynamic model was a modified ECOM-si model with inclusion of the flooding-drying cycle over intertidal salt marshes. The suspended sediment model consisted of a simple passive tracer equation with inclusion of sinking, resuspension, and sedimentation processes. The coupled model was driven by tidal forcing at the open boundary over the inner shelf of the South Atlantic Bight and real-time river discharge at the upstream end of the estuary, with a uniform initial distribution of total suspended sediment (TSS). The initial conditions for salinity were specified using observations taken along the estuary. The coupled model provided a reasonable simulation of both the spatial and temporal distributions of observed TSS concentration. Model-predicted TSS concentrations varied over a tidal cycle; they were highest at maximum flood and ebb tidal phases and lowest at slack tides. Model-guided process studies suggest that the spatial distribution of TSS concentration in the Satilla River estuary is controlled by a complex nonlinear physical process associated with the convergence and divergence of residual flow, a non-uniform along-estuary distribution of bottom stress, and the inertial effects of a curved shoreline.
VL - 26
IS - 3
ER -