A5015964254- Oceanographic and Atmospheric Processes
- Coastal and Marine Dynamics
- Coastal wetland ecosystem dynamics
- Climate variability and models
- Atmospheric and Environmental Gas Dynamics
- Marine and fisheries research
- Methane Hydrates and Related Phenomena
- Marine and coastal ecosystems
- Geological formations and processes
- Ocean Waves and Remote Sensing
- Marine animal studies overview
- Geology and Paleoclimatology Research
- Fish Ecology and Management Studies
- Wind Energy Research and Development
- Cephalopods and Marine Biology
- Meteorological Phenomena and Simulations
- Stonefly species taxonomy and ecology
- Geomagnetism and Paleomagnetism Studies
- Wave and Wind Energy Systems
- Marine Bivalve and Aquaculture Studies
- Coastal and Marine Management
- Soil Geostatistics and Mapping
- Geophysics and Gravity Measurements
- Tropical and Extratropical Cyclones Research
- Water Quality and Resources Studies
Utrecht University
2001-2019
Royal Netherlands Institute for Sea Research
2008-2019
University of Miami
2004
Colorado State University
2004
Abstract. The Dutch Wadden Sea is a region of intertidal flats located between the chain Islands and mainland. We present numerical model results on tidal prisms residual flows through inlets across one main watersheds. also provides insight into pathways fresh water originating from two sluices at Afsluitdijk (enclosure dike) use passive tracers. All these are obtained three-dimensional simulations carried out with General Estuarine Transport Model (GETM), horizontal resolution 200 m...
In April 2001 four hydrographic sections perpendicular to the southern East Madagascar Current were surveyed as part of Agulhas Sources Experiment. Observations with a vessel mounted and lowered ADCP produced information on current field while temperature, salinity, oxygen nutrient data obtained CTD‐Rosette system, gave water mass structure currents southeast Madagascar. The peak velocity in pole‐ward through these had typical magnitude ∼110 cm/s, width this was order 120 km. mean volume...
Abstract Results are presented from campaigns carried out in March and May 2012 across the main channel of Vlie Inlet western Dutch Wadden Sea. On both occasions current velocities concentrations suspended particulate matter (SPM) were measured at six stations over one tidal cycle. Concentrations found to be high only during late ebb early flood, implying a brief but intense export import SPM, respectively. Transport water SPM occurs predominantly southwestern part channel. The prism varies...
In 2001, two relatively saline intrathermocline eddies (ITEs) were observed southeast of Madagascar at 200 m depth. They are characterized by a subsurface salinity maximum over 35.8 potential temperatures between 18° and 22°C. The oxygen concentrations within the high cores slightly elevated compared with those surrounding water. Their horizontal extent is about 180 km, several times Rossby deformation radius, while their thickness 150 m. circulation around ITEs anticyclonic velocities 20 to...
Bifurcation analysis on e ows in a two-layer shallow-water model is used to clarify the dynamical origin of low-frequency variability double-gyre wind-driven ocean circulation. In many previous studies, generic variations appear be associated with distinct regimes, characterized by level kinetic energy mean ow. From these transient ow computations, current view that and transitions between them, arise through complex nonlinear interaction its high-frequency instabilities (the eddies). On...
The temporal variability of the midlatitude double-gyre wind-driven ocean circulation is studied in a three-layer quasi-geostrophic model over broad range parameter space. Four different types flow regimes are found, each characterized by specific time-mean state and spatio-temporal variability. As lateral friction decreased, these encountered following order: viscous antisymmetric regime, asymmetric quasi-homoclinic regime inertial regime. (at high low friction, respectively) mainly caused...
At tidal inlets large amounts of water are exchanged with the adjacent sea during cycle.The residual flows, net effect ebb and flood, generally small compared to gross flux, they vary in magnitude sign from one period other, their long-term mean varies year year.Here we focus on temporal variability flows Marsdiep inlet, which is western-most inlet Wadden Sea, a lagoon along coasts Netherlands, Germany Denmark.We compare transport high-resolution numerical model velocity profile data...
The effect of the parameterization lateral friction on separation western boundary currents is addressed in an idealized context. study motivated by a puzzling issue that arises from nonlinear theory wind-driven double-gyre circulation shallow-water models. Subtle changes representation these models have substantial both steady-state and transient flows. aim this paper to explain how introduces north–south asymmetry steady flows why degree depends type frictional parameterization. A more...
Flöser, G., Nauw, J., Burchard, H., Riethmüller, R., 2013. Observational evidence for the inward transport of suspended matter by estuarine circulation in Wadden Sea.Observational is presented that corroborates hypothesis represents a generic process Sea, independent (the amount of) river runoff. Long-term current velocity data from three locations taken on moored acoustical meters, onboard anchored ships and across-channel ship-of-opportunity platforms show all cases features concurring...
Abstract. The Dutch Wadden Sea is a region of intertidal flats located between the chain Islands and mainland. We present numerical model results on tidal prisms residual flows through inlets across one main watersheds. also provides insight into pathways fresh water originating from two sluices at Afsluitdijk (enclosure dike) use passive tracers. All these are obtained three-dimensional simulations carried out with General Estuarine Transport Model (GETM), horizontal resolution 200 m...
The paper will focus on hydrodynamics of the Rhine ROFI in its most northerly extent near IJmuiden.A bottom-mounted ADCP was deployed IJmuiden and measured for almost 6 months.Observations show that largest difference ellipticity between surface bottom mostly occurred during neap tide, suggesting water column stratified, leading to a cross-shore circulation.However, 3 out 11 tides no observed 1 10 spring strong occurred.To understand causes these irregularities model set up with GOTM.Based...