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Dataset Title:  Data from coastal circulation and water-column properties in the National Park
of American Samoa, February-July 2015, AMS15M2T01adc
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Institution:  USGS Coastal and Marine Geology Program   (Dataset ID: AMS15M2T01adc)
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) ?          2015-02-14T00:41:00Z    2015-07-15T01:01:00Z
  < slider >
 depth (DEPTH (M), m) ?          2.3499999046325684    17.350000381469727
  < slider >
 bindist (m) ?          2.1    17.1
 Rec (ensemble number, count) ?          96.0    10969.0
 longitude (sensor longitude, degrees_east) ?      
   - +  ?
  < slider >
 latitude (sensor latitude, degrees_north) ?      
   - +  ?
  < slider >
 u_1205 (Eastward Velocity, cm/s) ?          -63.33975    55.92637
 v_1206 (Northward Velocity, cm/s) ?          -34.22263    60.85926
 w_1204 (Vertical Velocity, cm/s) ?          -12.0    11.7
 Werr_1201 (Error Velocity, cm/s) ?          -18.4    11.7
 AGC_1202 (count) ?          58.5    163.25
 PGd_1203 (Percent Good Pings, percent) ?          24.0    100.0
 brange (m) ?          19.90451    21.9993
 Tx_1211 (degree_C) ?          27.96    30.44
 SV_80 (SOUND VELOCITY (M/S), m s-1) ?      
   - +  ?
 Hdg_1215 (INST Heading, degrees) ?          77.22    78.86
 Ptch_1216 (INST Pitch, degrees) ?          -2.14    -0.57
 Roll_1217 (INST Roll, degrees) ?          -0.54    0.23
 P_1294 (dekapascals) ?          16007.0    17345.0
 SDP_850 (STAND. DEV. (PRESS), mbar) ?          330.0    5920.0
 feature_type_instance ?      
   - +  ?
 profile_index ?          0    10873
 
Server-side Functions ?
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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.42387446e+9, 1.43692206e+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 2.35, 17.35;
    String axis "Z";
    Float64 bin_count 25.0;
    Float64 bin_size 1.0;
    Float64 blanking_distance 0.88;
    Float64 center_first_bin 2.1;
    Float64 colorBarMaximum 8000.0;
    Float64 colorBarMinimum -8000.0;
    String colorBarPalette "TopographyDepth";
    String datum "not yet assigned";
    Float64 epic_code 3.0;
    String FORTRAN_format "F10.2";
    String ioos_category "Location";
    String long_name "DEPTH (M)";
    String NOTE "uplooking bin depths = water_depth - transducer_offset_from_bottom - bindist";
    String positive "down";
    String source_name "z";
    String standard_name "depth";
    Float64 transducer_offset_from_bottom 0.25;
    String type "EVEN";
    String units "m";
    Float32 WATER_DEPTH 17.239586;
    String WATER_DEPTH_datum "not yet assigned";
    String WATER_DEPTH_source "water depth = MSL from pressure sensor, by trimbins";
  }
  bindist {
    Float32 _FillValue 1.0e+35;
    Float32 actual_range 2.1, 17.1;
    Float32 bin_size 1.0;
    Float32 blanking_distance 0.88;
    Float32 center_first_bin 2.1;
    String coverage_content_type "physicalMeasurement";
    Int32 epic_code 0;
    String FORTRAN_format "f10.2";
    String generic_name "bindist";
    Float32 initial_sensor_height 0.25;
    String ioos_category "Unknown";
    String long_name "bin distance from instrument (m)";
    String name "bindist";
    String NOTE "distance is along profile from instrument head to center of bin";
    Float32 sensor_depth 16.989586;
    Float32 transducer_offset_from_bottom 0.25;
    String type "EVEN";
    String units "m";
  }
  Rec {
    Float32 _FillValue 1.0e+35;
    Float32 actual_range 96.0, 10969.0;
    Float64 colorBarMaximum 100.0;
    Float64 colorBarMinimum 0.0;
    String coverage_content_type "physicalMeasurement";
    Int32 epic_code 0;
    String FORTRAN_format "f10.2";
    String generic_name "ensemble";
    String ioos_category "Statistics";
    String long_name "ensemble number";
    String name "ensemble";
    String type "EVEN";
    String units "count";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 actual_range -170.7012, -170.7012;
    String axis "X";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String datum "NAD83";
    Int32 epic_code 502;
    String FORTRAN_format "f10.4";
    String generic_name "lon";
    String ioos_category "Location";
    String long_name "sensor longitude";
    String name "LON";
    String standard_name "longitude";
    String type "EVEN";
    String units "degrees_east";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 actual_range -14.25071, -14.25071;
    String axis "Y";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String datum "NAD83";
    Int32 epic_code 500;
    String FORTRAN_format "F10.2";
    String generic_name "lat";
    String ioos_category "Location";
    String long_name "sensor latitude";
    String name "LAT";
    String standard_name "latitude";
    String type "EVEN";
    String units "degrees_north";
  }
  u_1205 {
    Float32 _FillValue 1.0e+35;
    Float32 actual_range -63.33975, 55.92637;
    Float64 colorBarMaximum 0.5;
    Float64 colorBarMinimum -0.5;
    String coverage_content_type "physicalMeasurement";
    Int32 epic_code 1205;
    String generic_name "u";
    String height_depth_units "m";
    Float32 initial_sensor_height 0.25;
    String ioos_category "Currents";
    String long_name "Eastward Velocity";
    String name "u";
    Float32 sensor_depth 16.989586;
    String sensor_type "RD Instruments ADCP";
    Int32 serial_number 7419;
    String standard_name "eastward_sea_water_velocity";
    String units "cm/s";
    Float32 valid_range -1000.0, 1000.0;
  }
  v_1206 {
    Float32 _FillValue 1.0e+35;
    Float32 actual_range -34.22263, 60.85926;
    Float64 colorBarMaximum 0.5;
    Float64 colorBarMinimum -0.5;
    String coverage_content_type "physicalMeasurement";
    Int32 epic_code 1206;
    String generic_name "v";
    Float32 initial_sensor_height 0.25;
    String ioos_category "Currents";
    String long_name "Northward Velocity";
    String name "v";
    Float32 sensor_depth 16.989586;
    String sensor_type "RD Instruments ADCP";
    Int32 serial_number 7419;
    String standard_name "northward_sea_water_velocity";
    String units "cm/s";
    Float32 valid_range -1000.0, 1000.0;
  }
  w_1204 {
    Float32 _FillValue 1.0e+35;
    Float32 actual_range -12.0, 11.7;
    Float64 colorBarMaximum 0.5;
    Float64 colorBarMinimum -0.5;
    String coverage_content_type "physicalMeasurement";
    Int32 epic_code 1204;
    String generic_name "w";
    Float32 initial_sensor_height 0.25;
    String ioos_category "Currents";
    String long_name "Vertical Velocity";
    String name "w";
    Float32 sensor_depth 16.989586;
    String sensor_type "RD Instruments ADCP";
    Int32 serial_number 7419;
    String standard_name "upward_sea_water_velocity";
    String units "cm/s";
    Float32 valid_range -1000.0, 1000.0;
  }
  Werr_1201 {
    Float32 _FillValue 1.0e+35;
    Float32 actual_range -18.4, 11.7;
    Float64 colorBarMaximum 50.0;
    Float64 colorBarMinimum 0.0;
    String coverage_content_type "physicalMeasurement";
    Int32 epic_code 1201;
    String FORTRAN_format "F8.1";
    String generic_name "w";
    String height_depth_units "m";
    Float32 initial_sensor_height 0.25;
    String ioos_category "Statistics";
    String long_name "Error Velocity";
    String name "Werr";
    Float32 sensor_depth 16.989586;
    String sensor_type "RD Instruments ADCP";
    Int32 serial_number 7419;
    String units "cm/s";
  }
  AGC_1202 {
    Float32 _FillValue 1.0e+35;
    Float32 actual_range 58.5, 163.25;
    Float64 colorBarMaximum 100.0;
    Float64 colorBarMinimum 0.0;
    String coverage_content_type "physicalMeasurement";
    Int32 epic_code 1202;
    String FORTRAN_format "F5.1";
    String generic_name "AGC";
    String height_depth_units "m";
    Float32 initial_sensor_height 0.25;
    String ioos_category "Statistics";
    String long_name "Average Echo Intensity (AGC)";
    String name "AGC";
    Float32 norm_factor 0.45;
    String NOTE "normalization to db";
    Float32 sensor_depth 16.989586;
    String sensor_type "RD Instruments ADCP";
    Int32 serial_number 7419;
    String units "count";
    Float32 valid_range 255.0, 255.0;
  }
  PGd_1203 {
    Float32 _FillValue 1.0e+35;
    Float32 actual_range 24.0, 100.0;
    Float64 colorBarMaximum 100.0;
    Float64 colorBarMinimum 0.0;
    String coverage_content_type "physicalMeasurement";
    Int32 epic_code 1203;
    String generic_name "PGd";
    String height_depth_units "m";
    Float32 initial_sensor_height 0.25;
    String ioos_category "Unknown";
    String long_name "Percent Good Pings";
    String name "PGd";
    String NOTE "Percentage of good 4-beam solutions (Field #4)";
    Float32 sensor_depth 16.989586;
    String sensor_type "RD Instruments ADCP";
    Int32 serial_number 7419;
    String units "percent";
    Float32 valid_range 0.0, 100.0;
  }
  brange {
    Float32 _FillValue 1.0e+35;
    Float32 actual_range 19.90451, 21.9993;
    Float64 colorBarMaximum 150.0;
    Float64 colorBarMinimum 0.0;
    String coverage_content_type "physicalMeasurement";
    Int32 epic_code 0;
    String FORTRAN_format "f10.2";
    String generic_name "brange";
    String height_depth_units "m";
    Float32 initial_sensor_height 0.25;
    String ioos_category "Unknown";
    String long_name "range from instrument head to boundary";
    String name "brange";
    String NOTE "range to boundary based on findsurface.m output";
    Float32 sensor_depth 16.989586;
    String sensor_type "RD Instruments ADCP";
    Int32 serial_number 7419;
    String units "m";
    Float32 valid_range 0.0, 100.0;
  }
  Tx_1211 {
    Float32 _FillValue 1.0e+35;
    Float32 actual_range 27.96, 30.44;
    Float64 colorBarMaximum 32.0;
    Float64 colorBarMinimum 0.0;
    String coverage_content_type "physicalMeasurement";
    Int32 epic_code 1211;
    String generic_name "temp";
    String height_depth_units "m";
    Float32 initial_sensor_height 0.25;
    String ioos_category "Temperature";
    String long_name "instrument Transducer Temp.";
    String name "Tx";
    Float32 sensor_depth 16.989586;
    String sensor_type "RD Instruments ADCP";
    Int32 serial_number 7419;
    String standard_name "sea_water_temperature";
    String units "degree_C";
    Float32 valid_range -5.0, 40.0;
  }
  SV_80 {
    Float32 _FillValue 1.0e+35;
    Float32 actual_range 1500.0, 1500.0;
    Float64 colorBarMaximum 1650.0;
    Float64 colorBarMinimum 1350.0;
    String coverage_content_type "physicalMeasurement";
    Int32 epic_code 80;
    String height_depth_units "m";
    Float32 initial_sensor_height 0.25;
    String ioos_category "Currents";
    String long_name "SOUND VELOCITY (M/S)";
    String name "SV";
    Float32 sensor_depth 16.989586;
    String sensor_type "RD Instruments ADCP";
    Int32 serial_number 7419;
    String standard_name "speed_of_sound_in_sea_water";
    String units "m s-1";
    Float32 valid_range 1400.0, 1600.0;
  }
  Hdg_1215 {
    Float32 _FillValue 1.0e+35;
    Float32 actual_range 77.22, 78.86;
    Float64 colorBarMaximum 400.0;
    Float64 colorBarMinimum 0.0;
    String coverage_content_type "physicalMeasurement";
    Int32 epic_code 1215;
    String FORTRAN_format "f10.2";
    String generic_name "hdg";
    Float32 heading_alignment_EH 0.0;
    Float32 heading_bias_EB 0.0;
    String height_depth_units "m";
    Float32 initial_sensor_height 0.25;
    String ioos_category "Unknown";
    String long_name "INST Heading";
    String name "Hdg";
    String NOTE "no heading bias was applied by EB during deployment or by wavesmon";
    Float32 sensor_depth 16.989586;
    String sensor_type "RD Instruments ADCP";
    Int32 serial 7419;
    String standard_name "platform_orientation";
    String units "degrees";
    Float32 valid_range 0.0, 360.0;
  }
  Ptch_1216 {
    Float32 _FillValue 1.0e+35;
    Float32 actual_range -2.14, -0.57;
    Float64 colorBarMaximum 200.0;
    Float64 colorBarMinimum -200.0;
    String coverage_content_type "physicalMeasurement";
    Int32 epic_code 1216;
    String FORTRAN_format "f10.2";
    String generic_name "ptch";
    String height_depth_units "m";
    Float32 initial_sensor_height 0.25;
    String ioos_category "Unknown";
    String long_name "INST Pitch";
    String name "Ptch";
    Float32 sensor_depth 16.989586;
    String sensor_type "RD Instruments ADCP";
    Int32 serial 7419;
    String standard_name "platform_pitch_angle";
    String units "degrees";
    Float32 valid_range -180.0, 180.0;
  }
  Roll_1217 {
    Float32 _FillValue 1.0e+35;
    Float32 actual_range -0.54, 0.23;
    Float64 colorBarMaximum 200.0;
    Float64 colorBarMinimum -200.0;
    String coverage_content_type "physicalMeasurement";
    Int32 epic_code 1217;
    String FORTRAN_format "f10.2";
    String generic_name "roll";
    String height_depth_units "m";
    Float32 initial_sensor_height 0.25;
    String ioos_category "Unknown";
    String long_name "INST Roll";
    String name "Roll";
    Float32 sensor_depth 16.989586;
    String sensor_type "RD Instruments ADCP";
    Int32 serial 7419;
    String standard_name "platform_roll_angle";
    String units "degrees";
    Float32 valid_range -180.0, 180.0;
  }
  P_1294 {
    Float32 _FillValue 1.0e+35;
    Float32 actual_range 16007.0, 17345.0;
    Float64 colorBarMaximum 5000.0;
    Float64 colorBarMinimum 0.0;
    String comment "Pressure may or may not include atmospheric pressure and sensor drift";
    String coverage_content_type "physicalMeasurement";
    Int32 epic_code 1294;
    String FORTRAN_format "f15.2";
    String generic_name "pres";
    String height_depth_units "m";
    Float32 initial_sensor_height 0.25;
    String ioos_category "Pressure";
    String long_name "Pressure at Transducer Head";
    String name "P";
    String NOTE "unknown if pressure was zeroed before deployment";
    Float32 sensor_depth 16.989586;
    String sensor_type "RD Instruments ADCP";
    Int32 serial_number 7419;
    String standard_name "sea_water_pressure";
    String units "dekapascals";
    Float32 valid_range 160070.0, 173450.0;
  }
  SDP_850 {
    Float32 _FillValue 1.0e+35;
    Float32 actual_range 330.0, 5920.0;
    String cell_methods "time: standard_deviation";
    Float64 colorBarMaximum 5000.0;
    Float64 colorBarMinimum 0.0;
    String coverage_content_type "physicalMeasurement";
    Int32 epic_code 850;
    String generic_name "pres";
    String height_depth_units "m";
    Float32 initial_sensor_height 0.25;
    String ioos_category "Pressure";
    String long_name "STAND. DEV. (PRESS)";
    String name "SDP";
    Float32 sensor_depth 16.989586;
    String sensor_type "RD Instruments ADCP";
    Int32 serial_number 7419;
    String standard_name "sea_water_pressure";
    String units "mbar";
    Float32 valid_range 0.0, 5000.0;
  }
  feature_type_instance {
    String cf_role "timeseries_id";
    String coverage_content_type "physicalMeasurement";
    String ioos_category "Identifier";
    String long_name "Feature Type Instance";
  }
  profile_index {
    Int32 actual_range 0, 10873;
    String cf_role "profile_id";
    String ioos_category "Identifier";
    String long_name "Profile Index";
  }
 }
  NC_GLOBAL {
    String _NCProperties "version=2,netcdf=4.7.4,hdf5=1.10.6";
    Float64 beam_angle 20.0;
    String beam_pattern "convex";
    Float64 beam_width 2.0;
    Float64 beams_in_velocity_calculation 4.0;
    Float64 bin_count 25.0;
    Float64 bin_size 1.0;
    Float64 blanking_distance 0.88;
    String cdm_data_type "TimeSeriesProfile";
    String cdm_profile_variables "profile_index";
    String cdm_timeseries_variables "feature_type_instance, latitude, longitude";
    Float64 center_first_bin 2.1;
    Float64 code_repetitions 5.0;
    Int32 COMPOSITE 0;
    String conductivity_sensor "NO";
    String Conventions "CF-1.6, ACDD-1.3, COARDS";
    String COORD_SYSTEM "GEOGRAPHIC";
    String creation_date "10-May-2016 09:55:01";
    String creator_name "USGS Coastal and Marine Geology Program";
    String creator_type "institution";
    String creator_url "https://www.usgs.gov/";
    String DATA_CMNT "Time fixed by fix_timeNative by adding 11.000000 hours; Site M2 ADCP with waves";
    String DATA_ORIGIN "USGS WCMG Sed Trans Group";
    String DATA_SUB_TYPE "MOORED";
    String DATA_TYPE "ADCP";
    String datasetID "AMS15M2T01adc";
    String date_created "2016-05-10T09:55:01Z";
    String DELTA_T "1200";
    String Deployment_date "14-Feb-2015 00:00";
    Int32 DEPTH_CONST 0;
    String depth_sensor "YES";
    String DESCRIPT "miniprobe";
    Int32 DRIFTER 0;
    Float64 Easternmost_Easting -170.7012;
    String ED_taken_from_depth_sensor "YES";
    String EH_taken_from_transducer_heading_sensor "YES";
    Float64 ending_water_layer 5.0;
    String EP_taken_from_transducer_pitch_sensor "YES";
    String ER_taken_from_transducer_roll_sensor "YES";
    Float64 error_velocity_threshold 2000.0;
    String ES_derived_from_conductivity_sensor "YES";
    String ET_taken_from_temperature_sensor "YES";
    String EXPERIMENT "AMS15";
    String experiment_id "AMS15";
    Float64 false_target_reject_values 255.0, 255.0;
    String featureType "TimeSeriesProfile";
    Int32 FILL_FLAG 0;
    Float64 firmware_version 16.21;
    Float64 frequency 600.0;
    Float64 geospatial_lat_max -14.25071;
    Float64 geospatial_lat_min -14.25071;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -170.7012;
    Float64 geospatial_lon_min -170.7012;
    String geospatial_lon_units "degrees_east";
    Float64 geospatial_vertical_max 17.35;
    Float64 geospatial_vertical_min 2.35;
    String geospatial_vertical_positive "down";
    String geospatial_vertical_units "m";
    String heading_sensor "YES";
    String history 
"Imported from ScienceBase data release and converted to CF using process_F7RN362H.ipynb; Time fixed by fix_timeNative SVN $Revision: 5348 $ by adding 11.000000 hours; Written to an EPIC standard data file by adcp2ep SVN $Revision: 2101 $; 
Bins were trimmed by trimbinsNative SVN $Revision: 2101 $ based on depth sensor input information.
Converted to netCDF via MATLAB by rdi2cdfNative SVN $Revision: 2143 $
2024-03-05T07:29:35Z (local files)
2024-03-05T07:29:35Z https://geoport.usgs.esipfed.org/erddap/tabledap/AMS15M2T01adc.html";
    String id "AMS15M2T01adc";
    String infoUrl "https://doi.org/10.5066/F7RN362H";
    Float32 initial_instrument_height 0.25;
    String initial_instrument_height_note "height in meters above bottom: accurate for tripod mounted instruments";
    String INST_TYPE "RD Instruments ADCP";
    String institution "USGS Coastal and Marine Geology Program";
    String janus "4 Beam";
    String keywords "acoustic, acoustics, adcp, agc, AGC_1202, american, ams15m2t01adc, angle, average, bin, bindist, boundary, brange, circulation, coastal, column, conductivity, ctd, current, currents, data, depth, dev, distance, doppler, earth, Earth Science > Oceans > Ocean Acoustics > Acoustic Velocity, Earth Science > Oceans > Ocean Circulation > Ocean Currents, Earth Science > Oceans > Ocean Pressure > Water Pressure, Earth Science > Oceans > Ocean Temperature > Water Temperature, eastward, eastward_sea_water_velocity, echo, ensemble, error, feature, feature_type_instance, february-july, geological, geology, good, Hdg_1215, head, heading, identifier, index, inst, instance, instrument, intensity, latitude, longitude, marine, measurement, national, naval, northward, northward_sea_water_velocity, nps, number, ocean, oceanography, oceans, orientation, P_1294, park, percent, PGd_1203, pings, pitch, platform, platform_orientation, platform_pitch_angle, platform_roll_angle, postgraduate, press, pressure, profile, profile_index, profiler, program, properties, Ptch_1216, range, Rec, roll, Roll_1217, samoa, school, science, SDP_850, sea, sea_water_pressure, sea_water_temperature, seawater, sediment transport, sensor, sonde, sound, speed, speed_of_sound_in_sea_water, stand, states, statistics, survey, SV_80, temperature, time, transducer, Tx_1211, type, u_1205, united, upward, upward_sea_water_velocity, usgs, v_1206, velocity, vertical, w_1204, water, water-column, Werr_1201";
    String keywords_vocabulary "GCMD Science Keywords";
    Float64 lag_length 53.0;
    Float64 latitude -14.25071;
    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 longitude -170.70124;
    Float32 magnetic_variation_applied 11.65;
    Float32 magnetic_variation_at_site 11.65;
    String metadata_link "https://doi.org/10.5066/F7RN362H";
    Float64 minmax_percent_good 0.0, 100.0;
    String modification_date "10-May-2016 09:55:04";
    String MOORING "AMS15M2T";
    String naming_authority "gov.usgs.cmgp";
    Float32 nominal_sensor_depth 16.989586;
    String nominal_sensor_depth_note "inst_depth = (water_depth - inst_height); nominal depth below surface, meters";
    Float64 Northernmost_Northing -14.25071;
    String NOTE_1 "transmit_pulse_length units are cm";
    String NOTE_2 "transmit_lag_distance units are cm";
    String NOTE_3 "bin depths are relative to the seabed";
    String orientation "UP";
    Float64 pings_per_ensemble 240.0;
    String pitch_sensor "YES";
    String platform_type "Tripod";
    Int32 POS_CONST 0;
    Float64 pred_accuracy 0.35;
    Float64 profiling_mode 1.0;
    String project "CMG_Portal";
    String publisher_url "https://www.usgs.gov/";
    String Recovery_date "15-Jul-2015 01:00";
    String roll_sensor "YES";
    Float32 salinity_set_by_user 35.0;
    String salinity_set_by_user_units "PPT";
    String SciPi "Curt Storlazzi";
    Float64 sensor_configuration 1.0;
    Float64 serial_number 7419.0;
    Float64 simulated_data 0.0;
    String Sound_speed_computed_from_ED_ES_ET "YES";
    String source "USGS";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing -14.25071;
    String standard_name_vocabulary "CF Standard Name Table v66";
    Float64 starting_water_layer 1.0;
    String subsetVariables "longitude, latitude, SV_80, feature_type_instance";
    String summary 
"Data from coastal circulation and water-column properties in the National Park of American Samoa, February-July 2015 - AMS15M2T01adc. In 2015, U.S. Geological Survey (United States Geological Survey (USGS)) and U.S. National Park Service (Naval Postgraduate School (NPS)) researchers began a collaborative study to determine coastal circulation patterns and water-column properties along north-central Tutuila, in an area focused on NPSA's Tutuila Unit and its coral reef ecosystem. The continuous measurements of waves, currents, tides, and water-column properties (temperature and salinity) from these instrument deployments, coupled with available meteorological measurements of wind and rainfall, provide information on nearshore circulation and the variability in these hydrodynamic properties for NPSA's Tutuila Unit. These data will complement ongoing and future water quality efforts along north-central Tutuila and in NPSA that will provide baseline information to determine impacts resulting from management and (or) climate change.

The field experiment included collection of continuous oceanographic data, as well as spatially extensive shipboard surveys and drifter deployments in NPSA from February through July 2015. The goals of the experiment were to understand controls on flow patterns and water-column properties in the NPSA. To do this, the USGS and NPS set out to complete the following tasks: 

Measure temporal variability in wave heights, wave periods, wave directions, current speeds, current directions, temperature, and salinity.
Measure spatial variability in current speeds, current directions, temperature, salinity, chlorophyll, turbidity, and light transmission.
Track pathways of Lagrangian ocean surface current drifters to understand transport pathways of buoyant surface material (coral larvae, debris, search-and rescue, etc).
Compile modeled deep-water wave height, wave period, and wave direction data and locally-measured wind speed, wind direction, rainfall and barometric pressure.
Determine the influence of oceanographic and meteorologic forcing on circulation patterns and water-column properties along north-central Tutuila and in NPSA waters.
This data release includes data from acoustic doppler current profilers, conductivity-temperature-depth profilers, satellite-tracked Lagrangian surface-current drifters, and other time-series oceanographic data. A full description of the data and findings of the study are included in a USGS Open File Report:
Storlazzi, C.D., Cheriton, O.M., Rosenberger, K.J., Logan, J.B., and Clark, T.B., 2017, Coastal circulation and water-column properties in the National Park of American Samoa, February-July 2015: U.S. Geological Survey Open-File Report 2017-1060, 104 p., https://doi.org/10.3133/ofr20171060.";
    String temperature_sensor "YES";
    Float64 time_between_ping_groups 0.5;
    String time_coverage_duration "P151DT0H20M0S";
    String time_coverage_end "2015-07-15T01:01:00Z";
    String time_coverage_resolution "P0DT0H20M0S";
    String time_coverage_start "2015-02-14T00:41:00Z";
    String title "Data from coastal circulation and water-column properties in the National Park of American Samoa, February-July 2015, AMS15M2T01adc";
    String transducer_attached "1";
    Float32 transducer_offset_from_bottom 0.25;
    String transform "EARTH";
    Float64 transmit_lag_distance 24.0;
    Float64 transmit_pulse_length_cm 120.0;
    Float64 valid_correlation_range 64.0, 255.0;
    String VAR_DESC "bindist:ensemble:u:v:w:Werr:AGC:PGd:brange:Tx:SV:Hdg:Ptch:Roll:P:SDP";
    Float32 VAR_FILL 1.0e+35;
    Float32 WATER_DEPTH 17.239586;
    String WATER_DEPTH_datum "not yet assigned";
    String WATER_DEPTH_source "water depth = MSL from pressure sensor, by trimbins";
    Float64 Westernmost_Easting -170.7012;
  }
}

 

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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