Oceanographic time-series measurements from the mouth of the Columbia River, Oregon and Washington, 2013

Dates

Start Date: 2013-05-09
End Date: 2013-06-16
Publication Date: 2017

Citation

Stevens, A.W., Gelfenbaum, G., MacMahan, J., Reniers, A.J.H.M., Elias, E.P., Sherwood, C.R., Carlson, E.M., 2017, Oceanographic measurements and hydrodynamic modeling of the mouth of the Columbia River, Oregon and Washington, 2013: U.S. Geological Survey data release, http://dx.doi.org/10.5066/F7NG4NS1.

Summary

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 Windy at three locations [...]

Summary

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 Windy at three locations within the MCR. The three tripods frames were approximately 2.5 m tall and 3 m wide. After navigating to the planned tripod-deployment locations, the tripods were lowered to the seafloor using the ship’s boom. Once on the bottom, the locations were recorded using a hand-held GPS and the water depth was recorded using the ship’s echosounder (table 1). Two independent methods for recovery of the tripods were included on the tripods. A ground line that led to a 500-lb clump weight and a surface buoy was the primary recovery method. The tripods also included Edgetech CART acoustic releases attached to a 14” float and line bucket mounted on the tripod. On June 15, 2013, all the tripods were successfully recovered from the F/V Cape Windy resulting in a 38-day deployment. Two of the tripods (North and West) were recovered using the ground line and surface float. During recovery of the South tripod, the line between the clump weight and surface float parted. The acoustic release was triggered and the float and line was used to recover the instrument package.

After recovery of the tripods, the manufacturers’ software was used to download the data, apply calibration coefficients, and convert the data to scientific units. These output files were then converted by custom, instrument-specific Matlab programs to netCDF files. Digitial files containing time-series data available for each tripod are provided in .zip files. The .zip archives contain separate files with current- and wave-data from the ADCP, files with burst data and burst-averaged data from the ADV, a single file from the CTD, single files from the fan- and pencil-beam sonars, and a comma-separated text file describing the contents of the zip archive.

**Table 1. List of station designations, locations, deployment and recovery times for instrumented tripods deployed in the mouth of the Columbia River, Oregon and Washington, in 2013.**
Site	Longitude (deg. East)	Latitude (deg. North)	Water depth (m)	Deployment date and time (GMT)	Recovery date and time (GMT)
North	-123.97139	46.24498	11.2	May 9, 2013 16:35	June 15, 2013 20:37
West	-124.06505	46.26505	12.1	May 9, 2013 18:27	June 15, 2013 22:12
South	-123.98542	46.23073	13.0	May 9, 2013 19:51	June 16, 2013 01:47

Figure 1. Photograph of the instrumented tripod deployed at the South Site in the mouth of the Columbia River, Oregon and Washington, in 2013 showing the locations of instruments on the frame. All three tripods deployed included similar instrumentation and locations on the frames.

Contacts

Point of Contact :: PCMSC Science Data Coordinator
Originator :: Andrew Stevens, Guy R Gelfenbaum, Jamie MacMahan, Ad Reniers, Edwin P Elias, Christopher R Sherwood, Emily Carlson
Metadata Contact :: PCMSC Science Data Coordinator
Publisher :: U.S. Geological Survey
USGS Mission Area :: Natural Hazards
SDC Data Owner :: Pacific Coastal and Marine Science Center
Distributor :: U.S. Geological Survey - ScienceBase

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mcr13_tripod_metadata.xml Original FGDC Metadata	View	16.06 KB	application/fgdc+xml
tripod_annotated.jpg “Annotated image of tripod”		1.5 MB	image/jpeg
mcr13_north_tripod_time_series.zip “Time-series data from the North Site”		817.74 MB	application/zip
mcr13_south_tripod_time_series.zip “Time-series data from the South Site”		770.91 MB	application/zip
“Time-series data from the West Site”		1.09 GB	application/zip

Purpose

These data were collected to characterize circulation and sediment transport in the mouth of the Columbia River.

Oceanographic time-series measurements from the mouth of the Columbia River, Oregon and Washington, 2013

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