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Title Sum-
Institution Dataset ID
   set  data   graph     files  Oceanographic measurements obtained offshore of the Elwha River delta in coordination with
the Elwha River Restoration Project, Washington, USA, 2010-2014, ELW13B8T03aq
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The Dataset's Variables and Attributes

Row Type Variable Name Attribute Name Data Type Value
attribute NC_GLOBAL _NCProperties String version=2,netcdf=4.7.4,hdf5=1.10.6
attribute NC_GLOBAL cdm_data_type String TimeSeries
attribute NC_GLOBAL cdm_timeseries_variables String feature_type_instance, latitude, longitude
attribute NC_GLOBAL clock_error double 0.0
attribute NC_GLOBAL clock_error_units String Hours
attribute NC_GLOBAL Conventions String CF-1.6, ACDD-1.3, COARDS
attribute NC_GLOBAL creator_name String USGS Coastal and Marine Geology Program
attribute NC_GLOBAL creator_type String institution
attribute NC_GLOBAL creator_url String (external link)
attribute NC_GLOBAL DATA_CMNT String Elwha River Tripod B8
attribute NC_GLOBAL datasetID String ELW13B8T03aq
attribute NC_GLOBAL date_created String 2020-07-14T17:43:45.937Z
attribute NC_GLOBAL DELTA_T String 300
attribute NC_GLOBAL Deployment_date String 11-Dec-2013 19:48:00
attribute NC_GLOBAL Easternmost_Easting double -123.5735
attribute NC_GLOBAL EXPERIMENT String Elwha River Dam Removal
attribute NC_GLOBAL experiment_id String ELW13
attribute NC_GLOBAL featureType String TimeSeries
attribute NC_GLOBAL geospatial_lat_max double 48.14428
attribute NC_GLOBAL geospatial_lat_min double 48.14428
attribute NC_GLOBAL geospatial_lat_units String degrees_north
attribute NC_GLOBAL geospatial_lon_max double -123.5735
attribute NC_GLOBAL geospatial_lon_min double -123.5735
attribute NC_GLOBAL geospatial_lon_units String degrees_east
attribute NC_GLOBAL geospatial_vertical_max double 8.707044
attribute NC_GLOBAL geospatial_vertical_min double 8.707044
attribute NC_GLOBAL geospatial_vertical_positive String down
attribute NC_GLOBAL geospatial_vertical_units String m
attribute NC_GLOBAL history String Imported from ScienceBase data release and converted to CF using process_F7CR5RW8.ipynb;
attribute NC_GLOBAL id String ELW13B8T03aq
attribute NC_GLOBAL infoUrl String (external link)
attribute NC_GLOBAL initial_instrument_height double 0.73
attribute NC_GLOBAL INST_NUMBER String ELW13B8T03
attribute NC_GLOBAL institution String USGS Coastal and Marine Geology Program
attribute NC_GLOBAL keywords String 2010-2014, acoustic, adcp, applied, coastal, common, conductivity, coordination, ctd, current, currents, data, delta, depth, doppler, earth, Earth Science > Oceans > Ocean Pressure > Water Pressure, elw13b8t03aq, elwha, feature, feature_type_instance, format, ftu, gain, geological, geology, identifier, instance, latitude, longitude, marine, measurement, measurements, network, obs, observations, obtained, ocean, oceanographic, oceanography, oceans, offshore, P_1, pressure, profiler, program, project, restoration, river, science, sea, sea_water_pressure, sea_water_turbidity, seapoint, seawater, sediment transport, sensor, sonde, states, statistics, survey, temperature, time, Trb_980, turbidity, type, united, usa, usgs, velocity, washington, water, with
attribute NC_GLOBAL keywords_vocabulary String GCMD Science Keywords
attribute NC_GLOBAL license String The data may be used and redistributed for free but is not intended
for legal use, since it may contain inaccuracies. Neither the data
Contributor, ERD, NOAA, nor the United States Government, nor any
of their employees or contractors, makes any warranty, express or
implied, including warranties of merchantability and fitness for a
particular purpose, or assumes any legal liability for the accuracy,
completeness, or usefulness, of this information.
attribute NC_GLOBAL magnetic_variation double 16.65
attribute NC_GLOBAL metadata_link String (external link)
attribute NC_GLOBAL MOORING String ELW13B8T
attribute NC_GLOBAL naming_authority String gov.usgs.cmgp
attribute NC_GLOBAL nominal_instrument_depth double 8.707043598306447
attribute NC_GLOBAL Northernmost_Northing double 48.14428
attribute NC_GLOBAL platform_type String Tripod
attribute NC_GLOBAL program String Puget Sound
attribute NC_GLOBAL project String CMG_Portal
attribute NC_GLOBAL publisher_url String (external link)
attribute NC_GLOBAL Recovery_date String 10-Mar-2014 16:29:00
attribute NC_GLOBAL Region String Puget Sound
attribute NC_GLOBAL samp_rate double 300.0
attribute NC_GLOBAL SciPi String Jonathan Warrick
attribute NC_GLOBAL serial_number String 24-207
attribute NC_GLOBAL source String USGS
attribute NC_GLOBAL sourceUrl String (local files)
attribute NC_GLOBAL Southernmost_Northing double 48.14428
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v66
attribute NC_GLOBAL subsetVariables String depth, latitude, longitude, feature_type_instance
attribute NC_GLOBAL summary String Oceanographic measurements obtained offshore of the Elwha River delta in coordination with the Elwha River Restoration Project, Washington, USA, 2010-2014 - ELW13B8T03aq. First Release: Aug 2017
Revised: May 2018 (ver. 1.1)

Time-series data of velocity, pressure, turbidity, conductivity, and temperature were collected near the mouth of the Elwha River, Washington, USA, from December 2010 through October 2014, for the Department of Interior's Elwha River Restoration project. As part of this project, the U.S. Geological Survey studied the effects of renewed sediment supplies on the coastal ecosystems before, during, and following the removal of two dams, Elwha and Glines Canyon, from the Elwha River. Removal of the dams reintroduced sediment stored in the reservoirs to the river, and the river moved much of this sediment to the coast.

Several benthic tripods were instrumented with oceanographic sensors to collect the time-series data. Initial deployment in December 2010 consisted of one tripod about 1 km east of the Elwha River mouth (Tripod A). In March of 2011, an identical tripod (Tripod B) was placed about 1 km west of the river mouth. A mooring was added to the western site in July 2012 to measure turbidity and conductivity near the surface. A third tripod was placed in deeper water (50 m) directly offshore of the river mouth in an attempt to characterize sediment gravity flows near the seafloor if they occurred (Tripod C). Exceptional sedimentation was observed near the original tripod site A during the winter of 2013-2014. As a result, the tripod was relocated further east in April 2013 and renamed Tripod D.

Please check metadata and instrument information carefully for applicable time periods of specific data, as individual instrument deployment times and duration of the time series vary.

The naming convention for the Network Common Data Format (NetCDF) files included in this release is a 12-character alphanumeric code ( where:

ELW is a 3-digit alphabetic-code for this experiment located at the mouth of the Elwha River
YY is the 2 digit year at the time of deployment
J is the location with respect to the river mouth [A, East (December 2010 to April 2013); B, West; C, Offshore; D, East (April 2013 to March 2014)]
K is the deployment number (1-9; beginning and ending dates of each deployment are given below)
L is the instrument package type (T, tripod; M, surface mooring)
NN indicates the position of instrument on the surface mooring (01, nearest the surface; NN increases with depth)
XX denotes the instrument or data type (wh, RDInstruments Acoustic Doppler Current Profiler (ADCP) current data; wv, RDInstruments ADCP derived wave parameters; nx, Falmouth Scientific NXIC Conductivity, Temperature, Depth (CTD); aq, Aquatec Aqualogger OBS; bl, RBR, Ltd CTD; sc, SeaBird Electonics SBE16+ CT)

Some derived parameters are included in these data.

Deployment dates:
1. Dec 2010 to Mar 2011
2. Mar 2011 to Sep 2011
3. Sep 2011 to Mar 2012
4. Mar 2012 to Aug 2012
5. Aug 2012 to Jan 2013
6. Jan 2013 to Jun 2013
7. Jun 2013 to Dec 2013
8. Dec 2013 to Mar 2014
9. Mar 2014 to Oct 2014
attribute NC_GLOBAL time_coverage_duration String P88DT20H35M0S
attribute NC_GLOBAL time_coverage_end String 2014-03-10T16:25:00Z
attribute NC_GLOBAL time_coverage_resolution String P0DT0H5M0S
attribute NC_GLOBAL time_coverage_start String 2013-12-11T19:50:00Z
attribute NC_GLOBAL title String Oceanographic measurements obtained offshore of the Elwha River delta in coordination with the Elwha River Restoration Project, Washington, USA, 2010-2014, ELW13B8T03aq
attribute NC_GLOBAL tstart float 2013.0, 12.0, 11.0, 19.0, 50.0, 0.0
attribute NC_GLOBAL VAR_DESC String T
attribute NC_GLOBAL WATER_DEPTH double 9.437043598306447
attribute NC_GLOBAL WATER_DEPTH_datum String MSL
attribute NC_GLOBAL WATER_DEPTH_source String water depth = MSL from pressure sensor in meters seawater
attribute NC_GLOBAL Westernmost_Easting double -123.5735
variable time   double  
attribute time _CoordinateAxisType String Time
attribute time actual_range double 1.3867914E9, 1.3944687E9
attribute time axis String T
attribute time calendar String proleptic_gregorian
attribute time ioos_category String Time
attribute time long_name String time of measurement
attribute time standard_name String time
attribute time time_origin String 01-JAN-1970 00:00:00
attribute time units String seconds since 1970-01-01T00:00:00Z
variable depth   float  
attribute depth _CoordinateAxisType String Height
attribute depth _CoordinateZisPositive String down
attribute depth actual_range float 8.707044, 8.707044
attribute depth axis String Z
attribute depth colorBarMaximum double 8000.0
attribute depth colorBarMinimum double -8000.0
attribute depth colorBarPalette String TopographyDepth
attribute depth epic_code int 3
attribute depth FORTRAN_format String F10.2
attribute depth ioos_category String Location
attribute depth long_name String depth of sensor below mean water level
attribute depth positive String down
attribute depth source_name String z
attribute depth standard_name String depth
attribute depth type String EVEN
attribute depth units String m
variable latitude   float  
attribute latitude _CoordinateAxisType String Lat
attribute latitude actual_range float 48.14428, 48.14428
attribute latitude axis String Y
attribute latitude colorBarMaximum double 90.0
attribute latitude colorBarMinimum double -90.0
attribute latitude epic_code int 500
attribute latitude FORTRAN_format String F10.2
attribute latitude ioos_category String Location
attribute latitude long_name String sensor latitude
attribute latitude standard_name String latitude
attribute latitude type String EVEN
attribute latitude units String degrees_north
variable longitude   float  
attribute longitude _CoordinateAxisType String Lon
attribute longitude actual_range float -123.5735, -123.5735
attribute longitude axis String X
attribute longitude colorBarMaximum double 180.0
attribute longitude colorBarMinimum double -180.0
attribute longitude epic_code int 502
attribute longitude FORTRAN_format String F10.2
attribute longitude ioos_category String Location
attribute longitude long_name String sensor longitude
attribute longitude standard_name String longitude
attribute longitude type String EVEN
attribute longitude units String degrees_east
variable P_1   float  
attribute P_1 _FillValue float 1.0E35
attribute P_1 actual_range float 16.37088, 20.50625
attribute P_1 colorBarMaximum double 5000.0
attribute P_1 colorBarMinimum double 0.0
attribute P_1 comment String Atmospheric pressure not removed
attribute P_1 coverage_content_type String physicalMeasurement
attribute P_1 epic_code int 1
attribute P_1 FORTRAN_format String f10.1
attribute P_1 generic_name String depth
attribute P_1 ioos_category String Pressure
attribute P_1 long_name String PRESSURE (DB)
attribute P_1 name String P
attribute P_1 sensor_depth float 8.707044
attribute P_1 serial_number String 24-207
attribute P_1 standard_name String sea_water_pressure
attribute P_1 units String dbar
attribute P_1 valid_range float 0.0, 10000.0
variable Trb_980   float  
attribute Trb_980 _FillValue float 1.0E35
attribute Trb_980 actual_range float 0.298691, 777.9312
attribute Trb_980 code String R
attribute Trb_980 colorBarMaximum double 2000.0
attribute Trb_980 colorBarMinimum double 0.0
attribute Trb_980 coverage_content_type String physicalMeasurement
attribute Trb_980 epic_code int 980
attribute Trb_980 FORTRAN_format String f10.2
attribute Trb_980 gain float 20.0
attribute Trb_980 generic_name String turb
attribute Trb_980 ioos_category String Unknown
attribute Trb_980 long_name String Turbidity(FTU)
attribute Trb_980 name String Trb
attribute Trb_980 sensor_depth float 8.707044
attribute Trb_980 serial_number String 24-207
attribute Trb_980 standard_name String sea_water_turbidity
attribute Trb_980 units String FNU
attribute Trb_980 valid_range float 0.0, 1500.0
variable Gain   float  
attribute Gain _FillValue float NaN
attribute Gain actual_range float 1.0, 100.0
attribute Gain colorBarMaximum double 100.0
attribute Gain colorBarMinimum double 0.0
attribute Gain coverage_content_type String physicalMeasurement
attribute Gain ioos_category String Statistics
attribute Gain long_name String Gain applied to Seapoint OBS Sensor
attribute Gain name String Gain
attribute Gain units String count
attribute Gain valid_range float 0.0, 100.0
variable feature_type_instance   String  
attribute feature_type_instance cf_role String timeseries_id
attribute feature_type_instance coverage_content_type String physicalMeasurement
attribute feature_type_instance ioos_category String Identifier
attribute feature_type_instance long_name String Feature Type Instance

The information in the table above is also available in other file formats (.csv, .htmlTable, .itx, .json, .jsonlCSV1, .jsonlCSV, .jsonlKVP, .mat, .nc, .nccsv, .tsv, .xhtml) via a RESTful web service.

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