Folders: ROOT > ScienceBase Catalog > Pacific Coastal and Marine Science Center > Oceanographic measurements and hydrodynamic modeling of the mouth of the Columbia River, Oregon and Washington, 2013 ( Show all descendants )
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A process-based numerical model of the mouth of the Columbia River (MCR) and estuary, Oregon and Washington, was applied to simulate hydrodynamic conditions for the time period of the Office of Naval Research-funded River and Inlets Dynamics (RIVET II) experiment between May 9 and June 15, 2013. The model application was constructed using Delft3D, an open-source software package used to solve the unsteady shallow water equations to simulate water motion due to tides, waves, wind, and buoyancy effects (Lesser and others, 2004). This portion of the USGS data release describes the model application for this experiment and presents input files necessary to run the Delft3D model. Model Description The model application...
This portion of the data release contains Lagrangian drifter data collected in the Mouth of the Columbia River (MCR), Oregon and Washington, in 2013. Lagrangian surface currents were measured using drifters equipped with global navigation satellite system (GNSS) receivers. A total of eight drifter deployments were performed between May 25 and June 8, 2013 (USGS Field Activity S-03-13-WO; Table 1). For each deployment, drifters were released within the MCR and their positions were recorded until the drifters were recovered. The average duration of the drifter deployments varied between 1.6 hr and 17.2 hr, and the number of drifters released in a deployment ranged between 11 and 84. The initial positions and timing...
This portion of the USGS data release presents sediment grain-size data from samples collected from the mouth of the Columbia River, Oregon and Washington, in 2013 (USGS Field Activity Number S-03-13-PS). Surface sediment was sampled using a small ponar, or 'grab', sampler on May 9, 2013 from the F/V Cape Windy at three locations corresponding to sites where instrumented tripods were deployed. A handheld GNSS receiver was used to determine the locations of sediment samples. The grain-size distributions of samples were determined in the USGS Pacific Coastal and Marine Science Center sediment lab. Approximately 20 g of sediment was sub-sampled and 10 mL of 35 percent hydrogen peroxide was added to remove organic...
This portion of the data release presents water column acoustic backscatter data collected in the mouth of the Columbia River, Oregon and Washington, in 2013. Shipboard surveys to measure the acoustic properties of the water column were performed between May 28, 2013 and June 2, 2013 (USGS Field Activity S-03-13-WO) using a Biosonics single beam echosounder. The transducer was pole-mounted to the side of the R/V Park Snavely at approximately 1 m below the water surface and measurements were recorded as the vessel navigated along several cross-channel transects within the MCR. The 430 kHz transducer was set with a pulse length of 0.2 ms and a ping rate of 10 Hz and recorded data to a depth of 35 m below the transducer...
This USGS data release presents oceanographic time-series measurements of currents, waves, water-column properties, and sediment transport recorded at three locations by instrumented tripods deployed in the mouth of the Columbia River (MCR) between May and June, 2013 (USGS Field Activity S-03-13-WO). Each tripod was equipped with similar instrumentation (figure 1) including an upward looking 1200 kHz Teledyne RD Instruments acoustic Doppler current profiler (ADCP), a 5 MHz Sontek acoustic Doppler velocimeter (ADV) and Hydra data recorder, an RBR conductivity, temperature, and depth (CTD) sensor, and Imagenex 881 (fan beam) and 881A (pencil beam) sonars. The tripods were deployed on May 9, 2013 from the F/V Cape...
This portion of the USGS data release presents data from spatial surveys of water column currents and acoustic backscatter collected in the mouth of the Columbia River, Oregon and Washington, in 2013 (USGS Field Activity S-03-13-WO). Measurements of current velocity, discharge, and acoustic backscatter amplitude in the water column were collected using a downward looking 600 kHz Teledyne RDI ADCP pole-mounted to the R/V Park Snavely. Positioning and orientation of the ADCP were measured using an Applanix POS MV 320 and recorded at 1 Hz intervals. Data acquisition and merging of the ADCP and positioning data were achieved with Teledyne RDI VMDAS software. While underway, profiles of current velocity and acoustic...
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