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Dataset Title:  Oceanographic measurements obtained offshore of the Elwha River delta in
coordination with the Elwha River Restoration Project, Washington, USA, 2010-
2014, ELW11B3T02nx
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Institution:  USGS Coastal and Marine Geology Program   (Dataset ID: ELW11B3T02nx)
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background (external link) | Subset | Files | Make a graph
 
Variable ?   Optional
Constraint #1 ?
Optional
Constraint #2 ?
   Minimum ?
   or a List of Values ?
   Maximum ?
 
 time (time of measurement, UTC) ?          2011-09-12T16:30:05Z    2012-03-08T18:45:05Z
  < slider >
 depth (m) ?      
   - +  ?
  < slider >
 latitude (sensor latitude, degrees_north) ?      
   - +  ?
  < slider >
 longitude (sensor longitude, degrees_east) ?      
   - +  ?
  < slider >
 T_28 (TEMPERATURE (C), degree_C) ?          6.9438    12.6304
 P_1 (PRESSURE (DB), dbar) ?          7.6403    11.8245
 S_41 (SALINITY (PSU), PSU) ?          28.4886    33.3547
 C_50 (CONDUCTIVITY, mS cm-1) ?          29.6225    36.8075
 feature_type_instance ?      
   - +  ?
 
Server-side Functions ?
 distinct() ?
? ("Hover here to see a list of options. Click on an option to select it.Hover here to see a list of options. Click on an option to select it.Hover here to see a list of options. Click on an option to select it.Hover here to see a list of options. Click on an option to select it.Hover here to see a list of options. Click on an option to select it.")

File type: (more information)

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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.315845005e+9, 1.331232305e+9;
    String axis "T";
    String calendar "proleptic_gregorian";
    String ioos_category "Time";
    String long_name "time of measurement";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  depth {
    String _CoordinateAxisType "Height";
    String _CoordinateZisPositive "down";
    Float32 actual_range 10.09254, 10.09254;
    String axis "Z";
    Float64 colorBarMaximum 8000.0;
    Float64 colorBarMinimum -8000.0;
    String colorBarPalette "TopographyDepth";
    Int32 epic_code 3;
    String FORTRAN_format "F10.2";
    String ioos_category "Location";
    String long_name "depth of sensor below mean water level";
    String positive "down";
    String source_name "z";
    String standard_name "depth";
    String type "EVEN";
    String units "m";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 actual_range 48.14422, 48.14422;
    String axis "Y";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    Int32 epic_code 500;
    String FORTRAN_format "F10.2";
    String ioos_category "Location";
    String long_name "sensor latitude";
    String standard_name "latitude";
    String type "EVEN";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 actual_range -123.574, -123.574;
    String axis "X";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    Int32 epic_code 502;
    String FORTRAN_format "F10.2";
    String ioos_category "Location";
    String long_name "sensor longitude";
    String standard_name "longitude";
    String type "EVEN";
    String units "degrees_east";
  }
  T_28 {
    Float32 _FillValue 1.0e+35;
    Float32 actual_range 6.9438, 12.6304;
    Float64 colorBarMaximum 32.0;
    Float64 colorBarMinimum 0.0;
    String coverage_content_type "physicalMeasurement";
    Int32 epic_code 20;
    String FORTRAN_format "f10.2";
    String generic_name "temp";
    String ioos_category "Temperature";
    String long_name "TEMPERATURE (C)";
    String name "T";
    Float32 sensor_depth 10.092535;
    Float32 serial_number 2192.0;
    String standard_name "sea_water_temperature";
    String units "degree_C";
    Float32 valid_range 0.0, 100.0;
  }
  P_1 {
    Float32 _FillValue 1.0e+35;
    Float32 actual_range 7.6403, 11.8245;
    Float64 colorBarMaximum 5000.0;
    Float64 colorBarMinimum 0.0;
    String coverage_content_type "physicalMeasurement";
    Int32 epic_code 1;
    String FORTRAN_format "f10.1";
    String generic_name "depth";
    String ioos_category "Pressure";
    String long_name "PRESSURE (DB)";
    String name "P";
    Float32 sensor_depth 10.092535;
    Float32 serial_number 2192.0;
    String standard_name "sea_water_pressure";
    String units "dbar";
    Float32 valid_range 0.0, 10000.0;
  }
  S_41 {
    Float32 _FillValue 1.0e+35;
    Float32 actual_range 28.4886, 33.3547;
    Float64 colorBarMaximum 37.0;
    Float64 colorBarMinimum 32.0;
    String coverage_content_type "physicalMeasurement";
    Int32 epic_code 401;
    String FORTRAN_format "f10.2";
    String generic_name "sal";
    String ioos_category "Salinity";
    String long_name "SALINITY (PSU)";
    String name "S";
    Float32 sensor_depth 10.092535;
    Float32 serial_number 2192.0;
    String standard_name "sea_water_practical_salinity";
    String units "PSU";
    Float32 valid_range 0.0, 40.0;
  }
  C_50 {
    Float32 _FillValue 1.0e+35;
    Float32 actual_range 29.6225, 36.8075;
    Float64 colorBarMaximum 40.0;
    Float64 colorBarMinimum 30.0;
    String coverage_content_type "physicalMeasurement";
    Int32 epic_code 50;
    String generic_name "con";
    String ioos_category "Salinity";
    String long_name "CONDUCTIVITY";
    String name "C";
    Float32 sensor_depth 10.092535;
    Float32 serial_number 2192.0;
    String standard_name "sea_water_electrical_conductivity";
    String units "mS cm-1";
    Float32 valid_range 0.0, 100.0;
  }
  feature_type_instance {
    String cf_role "timeseries_id";
    String coverage_content_type "physicalMeasurement";
    String ioos_category "Identifier";
    String long_name "Feature Type Instance";
  }
 }
  NC_GLOBAL {
    String _NCProperties "version=2,netcdf=4.7.4,hdf5=1.10.6";
    String cdm_data_type "TimeSeries";
    String cdm_timeseries_variables "feature_type_instance, latitude, longitude";
    Float64 clock_error 0.0;
    String clock_error_units "Seconds";
    String Conventions "CF-1.6, ACDD-1.3, COARDS";
    String COORD_SYSTEM "GEOGRAPHIC";
    String creator_name "USGS Coastal and Marine Geology Program";
    String creator_type "institution";
    String creator_url "https://www.usgs.gov/";
    String DATA_CMNT "Elwha Dam Removal West Tripod Deployment 3";
    String DATA_ORIGIN "USGS WRCMG Sed Trans Groups";
    String DATA_SUBTYPE "MOORED";
    String DATA_TYPE "TIME";
    String datasetID "ELW11B3T02nx";
    String date_created "2020-07-14T17:43:09.681Z";
    String DELTA_T "299";
    String Deployment_date "12-Sep-2011 16:29:00";
    Float64 Easternmost_Easting -123.574;
    String EXPERIMENT "Elwha River Dam Removal";
    String experiment_id "ELW11";
    String featureType "TimeSeries";
    Float64 geospatial_lat_max 48.14422;
    Float64 geospatial_lat_min 48.14422;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -123.574;
    Float64 geospatial_lon_min -123.574;
    String geospatial_lon_units "degrees_east";
    Float64 geospatial_vertical_max 10.09254;
    Float64 geospatial_vertical_min 10.09254;
    String geospatial_vertical_positive "down";
    String geospatial_vertical_units "m";
    String history 
"Imported from ScienceBase data release and converted to CF using process_F7CR5RW8.ipynb;
2024-04-13T14:26:44Z (local files)
2024-04-13T14:26:44Z https://geoport.usgs.esipfed.org/erddap/tabledap/ELW11B3T02nx.html";
    String id "ELW11B3T02nx";
    String infoUrl "https://doi.org/10.5066/F7CR5RW8";
    Float64 INST_DEPTH 10.092534958667995;
    String INST_NUMBER "ELW11B3T02";
    Float32 INST_SER_NUM 2192.0;
    String INST_TYPE "FSI NXIC CTD-BIO";
    String institution "USGS Coastal and Marine Geology Program";
    String keywords "2010-2014, acoustic, adcp, C_50, coastal, common, conductivity, coordination, ctd, current, currents, data, delta, density, depth, doppler, earth, Earth Science > Oceans > Ocean Pressure > Water Pressure, Earth Science > Oceans > Ocean Temperature > Water Temperature, Earth Science > Oceans > Salinity/Density > Conductivity, Earth Science > Oceans > Salinity/Density > Salinity, electrical, elw11b3t02nx, elwha, feature, feature_type_instance, format, geological, geology, identifier, instance, latitude, longitude, marine, measurement, measurements, network, obtained, ocean, oceanographic, oceanography, oceans, offshore, P_1, practical, pressure, profiler, program, project, psu, restoration, river, S_41, salinity, science, sea, sea_water_electrical_conductivity, sea_water_practical_salinity, sea_water_pressure, sea_water_temperature, seawater, sediment transport, sensor, sonde, states, survey, T_28, temperature, time, type, unit, united, usa, usgs, velocity, washington, water, with";
    String keywords_vocabulary "GCMD Science Keywords";
    String license 
"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.";
    Float64 magnetic_variation 17.15;
    String metadata_link "https://doi.org/10.5066/F7CR5RW8";
    String MOORING "ELW11B3T";
    String naming_authority "gov.usgs.cmgp";
    Float64 Northernmost_Northing 48.14422;
    String platform_type "Tripod";
    String program "Puget Sound";
    String project "CMG_Portal";
    String publisher_url "https://www.usgs.gov/";
    String Recovery_date "08-Mar-2012 18:50:00";
    String Region "Puget Sound";
    Float64 samp_rate 299.0;
    String SciPi "Jonathan Warrick";
    String source "USGS";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 48.14422;
    String standard_name_vocabulary "CF Standard Name Table v66";
    String subsetVariables "depth, latitude, longitude, feature_type_instance";
    String summary 
"Oceanographic measurements obtained offshore of the Elwha River delta in coordination with the Elwha River Restoration Project, Washington, USA, 2010-2014 - ELW11B3T02nx. 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 (ELWYYJKLNNXX.nc) 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";
    String time_coverage_duration "P178DT2H15M0S";
    String time_coverage_end "2012-03-08T18:45:05Z";
    String time_coverage_resolution "P0DT0H5M0S";
    String time_coverage_start "2011-09-12T16:30:05Z";
    String title "Oceanographic measurements obtained offshore of the Elwha River delta in coordination with the Elwha River Restoration Project, Washington, USA, 2010-2014, ELW11B3T02nx";
    Float32 tstart 2011.0, 9.0, 12.0, 16.0, 30.0, 5.0;
    String VAR_DESC "T";
    Float64 WATER_DEPTH 10.742534958667996;
    String WATER_DEPTH_NOTE "Derived from mean pressure data from instrument";
    Float64 Westernmost_Easting -123.574;
  }
}

 

Using tabledap to Request Data and Graphs from Tabular Datasets

tabledap lets you request a data subset, a graph, or a map from a tabular dataset (for example, buoy data), via a specially formed URL. tabledap uses the OPeNDAP (external link) Data Access Protocol (DAP) (external link) and its selection constraints (external link).

The URL specifies what you want: the dataset, a description of the graph or the subset of the data, and the file type for the response.

Tabledap request URLs must be in the form
https://coastwatch.pfeg.noaa.gov/erddap/tabledap/datasetID.fileType{?query}
For example,
https://coastwatch.pfeg.noaa.gov/erddap/tabledap/pmelTaoDySst.htmlTable?longitude,latitude,time,station,wmo_platform_code,T_25&time>=2015-05-23T12:00:00Z&time<=2015-05-31T12:00:00Z
Thus, the query is often a comma-separated list of desired variable names, followed by a collection of constraints (e.g., variable<value), each preceded by '&' (which is interpreted as "AND").

For details, see the tabledap Documentation.


 
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