Coastal and Marine Hazards and Resources Program
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| Grid DAP Data | Sub- set | Table DAP Data | Make A Graph | W M S | Source Data Files | Title | Sum- mary | FGDC, ISO, Metadata | Back- ground Info | RSS | E | Institution | Dataset ID | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| data | graph | files | CCB21 - 11261sigs-a |
| F I M | background |
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| 10_5066_P19NUBNW_11261sigs_a_nc |
| Row Type | Variable Name | Attribute Name | Data Type | Value |
|---|---|---|---|---|
| attribute | NC_GLOBAL | ast_qual_min | double | 108.0 |
| attribute | NC_GLOBAL | ast_qual_sf | double | 0.93 |
| attribute | NC_GLOBAL | atmospheric_pressure_correction_file | String | 11261sig-atmpres.cdf |
| attribute | NC_GLOBAL | atmospheric_pressure_correction_offset_applied | float | -9.483928 |
| attribute | NC_GLOBAL | average_duration | int | 240 |
| attribute | NC_GLOBAL | average_interval | int | 360 |
| attribute | NC_GLOBAL | basefile | String | mat/S102410A006_11261sig |
| attribute | NC_GLOBAL | beam_angle | int | 25 |
| attribute | NC_GLOBAL | bin_size | double | 1.0 |
| attribute | NC_GLOBAL | cdm_data_type | String | TimeSeries |
| attribute | NC_GLOBAL | cdm_timeseries_variables | String | station_id |
| attribute | NC_GLOBAL | clip_f | String | true |
| attribute | NC_GLOBAL | ClockError | int | 0 |
| attribute | NC_GLOBAL | Conventions | String | COARDS, CF-1.6, ACDD-1.3 |
| attribute | NC_GLOBAL | COORD_SYSTEM | String | GEOGRAPHIC |
| attribute | NC_GLOBAL | creator_url | String | https://www.usgs.gov![]() |
| attribute | NC_GLOBAL | cutoff_ampl | int | 0 |
| attribute | NC_GLOBAL | DATA_CMNT | String | No magnetic variation recorded, used data from IGRF model via ngdc.noaa.gov. |
| attribute | NC_GLOBAL | DATA_ORIGIN | String | USGS WHCMSC Coastal and Estuarine Dynamics Group |
| attribute | NC_GLOBAL | DATA_SUBTYPE | String | MOORED |
| attribute | NC_GLOBAL | data_type | String | Burst |
| attribute | NC_GLOBAL | DELTA_T | int | 3600 |
| attribute | NC_GLOBAL | Deployment_date | String | 10-Mar-2021 16:00 |
| attribute | NC_GLOBAL | DEPTH_CONST | double | 0.0 |
| attribute | NC_GLOBAL | DESCRIPTION | String | Cape Cod Bay, Sandy Neck Beach, Barnstable, MA |
| attribute | NC_GLOBAL | diwasp | String | optimized |
| attribute | NC_GLOBAL | diwasp_ibin | int | 3 |
| attribute | NC_GLOBAL | diwasp_iter | int | 100 |
| attribute | NC_GLOBAL | diwasp_method | String | IMLM |
| attribute | NC_GLOBAL | diwasp_names | String | diwasp |
| attribute | NC_GLOBAL | diwasp_pow2 | String | true |
| attribute | NC_GLOBAL | diwasp_smooth | String | ON |
| attribute | NC_GLOBAL | DRIFTER | double | 0.0 |
| attribute | NC_GLOBAL | Easternmost_Easting | double | -70.330452 |
| attribute | NC_GLOBAL | EXPERIMENT | String | CCB21 |
| attribute | NC_GLOBAL | experiment_name | String | 10.5066-P19NUBNW |
| attribute | NC_GLOBAL | featureType | String | TimeSeries |
| attribute | NC_GLOBAL | Field_Activity_Number | String | 2021-018-FA, 2021-020-FA |
| attribute | NC_GLOBAL | filename | String | 11261sig |
| attribute | NC_GLOBAL | frequency | double | 1000.0 |
| attribute | NC_GLOBAL | geopotential_datum_name | String | NAVD88 |
| attribute | NC_GLOBAL | geopotential_datum_note | String | Elevation at seabed using VDatum with LMSL and GEOID18 |
| attribute | NC_GLOBAL | geospatial_lat_max | double | 41.742658 |
| attribute | NC_GLOBAL | geospatial_lat_min | double | 41.742658 |
| attribute | NC_GLOBAL | geospatial_lat_units | String | degrees_north |
| attribute | NC_GLOBAL | geospatial_lon_max | double | -70.330452 |
| attribute | NC_GLOBAL | geospatial_lon_min | double | -70.330452 |
| attribute | NC_GLOBAL | geospatial_lon_units | String | degrees_east |
| attribute | NC_GLOBAL | head_rotation | String | horizontal |
| attribute | NC_GLOBAL | height_above_geopotential_datum | double | -9.01 |
| attribute | NC_GLOBAL | history | String | 2025-09-17T16:21:14.706172+00:00: Processed using mat2cdf.py with stglib 1.6.1+51.gd44a195.dirty, xarray 2024.2.0, NumPy 1.26.4, netCDF4 1.6.5, Python 3.11.8. 2025-09-17T16:22:16.155998+00:00: Atmospherically corrected using time-series from 11261sig-atmpres.cdf and offset of -9.483927726745605 2025-09-17T16:22:16.257850+00:00: Data clipped using Deployment_date of 10-Mar-2021 16:00 and Recovery_date of 07-Apr-2021 14:07. 2025-09-17T16:22:16.298974+00:00: Rotating heading and horizontal velocities by -14.47 degrees. 2025-09-17T16:22:16.431554+00:00: Trimmed velocity data using atmospherically corrected pressure (water level) and sidelobes. 2025-09-17T16:22:19.340344+00:00: brangeAST trimmed where ast_quality < 108.0 2025-09-17T16:22:19.343335+00:00: Create water_level variable relative to NAVD88 as brangeAST + zsen 2025-09-17T16:22:19.344337+00:00: Processed to CF-1.10 using runots.py. 2025-09-17T16:22:19.362339+00:00: make time encoding to dtype double because tstep <xarray.DataArray 'time' ()> Size: 8B array(249998000, dtype='timedelta64[ns]') seconds is < 1 minute 2025-09-17T16:23:49.787726+00:00: Wave statistics computed using scipy.signal.welch(), assigning cutoff following Jones & Monismith (2007), and applying f^-4 tail past cutoff. 2025-09-17T16:23:49.875748+00:00: Create water_depth variable by converting P_1ac to sensor depth using S_41 and T_28 from file 11263mc-a.nc + pressure_sensor_height 2025-09-17T16:23:49.878766+00:00: Create water_level variable relative to NAVD88 as brangeAST + zsen |
| attribute | NC_GLOBAL | horizontal_datum_name | String | NAD83(2011) |
| attribute | NC_GLOBAL | infoUrl | String | https://cmgds.marine.usgs.gov/ocean-time-series/ |
| attribute | NC_GLOBAL | initial_instrument_height | double | 2.12 |
| attribute | NC_GLOBAL | initial_instrument_height_note | String | From seabed |
| attribute | NC_GLOBAL | institution | String | Coastal and Marine Hazards and Resources Program, U.S. Geological Survey |
| attribute | NC_GLOBAL | institution_url | String | https://woodshole.er.usgs.gov![]() |
| attribute | NC_GLOBAL | instrument_type | String | Signature1000 |
| attribute | NC_GLOBAL | latitude | double | 41.742658 |
| 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 | longitude | double | -70.330452 |
| attribute | NC_GLOBAL | magnetic_variation | double | -14.47 |
| attribute | NC_GLOBAL | MOORING | String | 1126 |
| attribute | NC_GLOBAL | NCProperties | String | version=2,netcdf=4.9.2,hdf5=1.14.3 |
| attribute | NC_GLOBAL | nominal_sensor_depth | double | 6.739999999999999 |
| attribute | NC_GLOBAL | nominal_sensor_depth_note | String | WATER_DEPTH - initial_instrument_height |
| attribute | NC_GLOBAL | Northernmost_Northing | double | 41.742658 |
| attribute | NC_GLOBAL | orientation | String | UP |
| attribute | NC_GLOBAL | P_1ac_note | String | Corrected for variations in atmospheric pressure using MesoWest Station FW7612 Dennis. |
| attribute | NC_GLOBAL | platform_type | String | Quadpod |
| attribute | NC_GLOBAL | POS_CONST | double | 0.0 |
| attribute | NC_GLOBAL | pressure_sensor_height | double | 2.12 |
| attribute | NC_GLOBAL | PROJECT | String | USGS Coastal and Marine Hazards and Resources Program |
| attribute | NC_GLOBAL | publisher_url | String | https://www.usgs.gov![]() |
| attribute | NC_GLOBAL | puv | String | false |
| attribute | NC_GLOBAL | Recovery_date | String | 07-Apr-2021 14:07 |
| attribute | NC_GLOBAL | sample_interval | double | 0.25 |
| attribute | NC_GLOBAL | sample_mode | String | CONTINUOUS |
| attribute | NC_GLOBAL | sample_rate | int | 4 |
| attribute | NC_GLOBAL | SciPi | String | John Warner |
| attribute | NC_GLOBAL | sea_floor_depth_below_mean_sea_level | double | 8.86 |
| attribute | NC_GLOBAL | serial_number | int | 102410 |
| attribute | NC_GLOBAL | sourceUrl | String | (local files) |
| attribute | NC_GLOBAL | Southernmost_Northing | double | 41.742658 |
| attribute | NC_GLOBAL | start_time | String | 2021-03-10T16:00:00.125997000 |
| attribute | NC_GLOBAL | stop_time | String | 2021-04-07T14:07:59.875996000 |
| attribute | NC_GLOBAL | summary | String | Unspecified |
| attribute | NC_GLOBAL | time_coverage_end | String | 2021-04-07T13:00:00Z |
| attribute | NC_GLOBAL | time_coverage_start | String | 2021-03-10T16:00:00Z |
| attribute | NC_GLOBAL | title | String | CCB21 - 11261sigs-a |
| attribute | NC_GLOBAL | transducer_offset_from_bottom | double | 2.12 |
| attribute | NC_GLOBAL | trim_ast | String | true |
| attribute | NC_GLOBAL | trim_avg_vel_bins | int | 1 |
| attribute | NC_GLOBAL | trim_method | String | water level sl |
| attribute | NC_GLOBAL | VAR_FILL | double | NaN |
| attribute | NC_GLOBAL | vel_b5_bad_ens | String | 2021-03-10 15:39 2021-03-10 18:12 |
| attribute | NC_GLOBAL | WATER_DEPTH | double | 8.86 |
| attribute | NC_GLOBAL | WATER_DEPTH_NOTE | String | (meters), Mean water level from Signature pressure data, converted to depth using density and gravity |
| attribute | NC_GLOBAL | water_level_var | String | brangeAST |
| attribute | NC_GLOBAL | WATER_MASS | String | Cape Cod Bay |
| attribute | NC_GLOBAL | wave_duration | int | 2048 |
| attribute | NC_GLOBAL | wave_interval | int | 3600 |
| attribute | NC_GLOBAL | wave_samples_per_burst | int | 8192 |
| attribute | NC_GLOBAL | wave_start_time | String | 2021-03-10 16:00:00 |
| attribute | NC_GLOBAL | wavedat_tolerance | String | 2 s |
| attribute | NC_GLOBAL | Westernmost_Easting | double | -70.330452 |
| attribute | NC_GLOBAL | zeroed_pressure | String | No |
| variable | station_id | String | ||
| attribute | station_id | actual_range | String | 10_5066_P19NUBNW_11261sigs_a_nc 10_5066_P19NUBNW_11261sigs_a_nc |
| attribute | station_id | cf_role | String | timeseries_id |
| attribute | station_id | ioos_category | String | Identifier |
| attribute | station_id | long_name | String | Station ID |
| variable | time | double | ||
| attribute | time | _ChunkSizes | uint | 1024 |
| attribute | time | _CoordinateAxisType | String | Time |
| attribute | time | actual_range | double | 1.615392E9, 1.6178004E9 |
| attribute | time | axis | String | T |
| attribute | time | calendar | String | proleptic_gregorian |
| attribute | time | ioos_category | String | Time |
| attribute | time | long_name | String | time (UTC) |
| 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 | z | double | ||
| attribute | z | actual_range | double | -6.89, -6.89 |
| attribute | z | axis | String | Z |
| attribute | z | geopotential_datum_name | String | NAVD88 |
| attribute | z | ioos_category | String | Other |
| attribute | z | long_name | String | height relative to NAVD88 |
| attribute | z | positive | String | up |
| attribute | z | standard_name | String | height |
| attribute | z | units | String | m |
| variable | depth_m | double | ||
| attribute | depth_m | actual_range | double | 6.739999999999999, 6.739999999999999 |
| attribute | depth_m | ioos_category | String | Other |
| attribute | depth_m | long_name | String | depth below mean sea level |
| attribute | depth_m | positive | String | down |
| attribute | depth_m | standard_name | String | depth |
| attribute | depth_m | units | String | m |
| variable | latitude | double | ||
| attribute | latitude | _CoordinateAxisType | String | Lat |
| attribute | latitude | actual_range | double | 41.742658, 41.742658 |
| attribute | latitude | axis | String | Y |
| attribute | latitude | epic_code | int | 500 |
| attribute | latitude | ioos_category | String | Location |
| attribute | latitude | long_name | String | Latitude |
| attribute | latitude | standard_name | String | latitude |
| attribute | latitude | units | String | degrees_north |
| variable | longitude | double | ||
| attribute | longitude | _CoordinateAxisType | String | Lon |
| attribute | longitude | actual_range | double | -70.330452, -70.330452 |
| attribute | longitude | axis | String | X |
| attribute | longitude | epic_code | int | 502 |
| attribute | longitude | ioos_category | String | Location |
| attribute | longitude | long_name | String | Longitude |
| attribute | longitude | standard_name | String | longitude |
| attribute | longitude | units | String | degrees_east |
| variable | wp_peak | double | ||
| attribute | wp_peak | _ChunkSizes | uint | 512 |
| attribute | wp_peak | actual_range | double | 2.782608695652174, 16.0 |
| attribute | wp_peak | epic_code | int | 4063 |
| attribute | wp_peak | FillValue | String | nan |
| attribute | wp_peak | ioos_category | String | Other |
| attribute | wp_peak | long_name | String | Dominant (peak) wave period |
| attribute | wp_peak | maximum | double | 16.0 |
| attribute | wp_peak | minimum | double | 2.782608695652174 |
| attribute | wp_peak | standard_name | String | sea_surface_wave_period_at_variance_spectral_density_maximum |
| attribute | wp_peak | units | String | s |
| variable | wh_4061 | double | ||
| attribute | wh_4061 | _ChunkSizes | uint | 335 |
| attribute | wh_4061 | actual_range | double | 0.023231722617291947, 3.1092214326104544 |
| attribute | wh_4061 | epic_code | int | 4061 |
| attribute | wh_4061 | FillValue | String | nan |
| attribute | wh_4061 | ioos_category | String | Other |
| attribute | wh_4061 | long_name | String | Significant wave height |
| attribute | wh_4061 | maximum | double | 3.1092214326104544 |
| attribute | wh_4061 | minimum | double | 0.023231722617291947 |
| attribute | wh_4061 | standard_name | String | sea_surface_wave_significant_height |
| attribute | wh_4061 | units | String | m |
| variable | wp_4060 | double | ||
| attribute | wp_4060 | _ChunkSizes | uint | 335 |
| attribute | wp_4060 | actual_range | double | 1.9061811324762536, 6.572031321657955 |
| attribute | wp_4060 | epic_code | int | 4060 |
| attribute | wp_4060 | FillValue | String | nan |
| attribute | wp_4060 | ioos_category | String | Other |
| attribute | wp_4060 | long_name | String | Average wave period |
| attribute | wp_4060 | maximum | double | 6.572031321657955 |
| attribute | wp_4060 | minimum | double | 1.9061811324762536 |
| attribute | wp_4060 | standard_name | String | sea_surface_wave_mean_period_from_variance_spectral_density_second_frequency_moment |
| attribute | wp_4060 | units | String | s |
| variable | frequency | double | ||
| attribute | frequency | actual_range | double | 0.015625, 2.0 |
| attribute | frequency | ioos_category | String | Other |
| attribute | frequency | long_name | String | Frequency |
| attribute | frequency | standard_name | String | sea_surface_wave_frequency |
| attribute | frequency | units | String | Hz |
| variable | pspec | double | ||
| attribute | pspec | _ChunkSizes | uint | 1, 255 |
| attribute | pspec | actual_range | double | 7.338097488395315E-9, 12.10350657527063 |
| attribute | pspec | FillValue | String | nan |
| attribute | pspec | ioos_category | String | Other |
| attribute | pspec | long_name | String | Pressure-derived non-directional wave energy spectrum |
| attribute | pspec | maximum | double | 12.10350657527063 |
| attribute | pspec | minimum | double | 7.338097488395315E-9 |
| attribute | pspec | note | String | Use caution: all spectra are provisional |
| attribute | pspec | standard_name | String | sea_surface_wave_variance_spectral_density |
| attribute | pspec | units | String | m^2/Hz |
| variable | water_depth | double | ||
| attribute | water_depth | _ChunkSizes | uint | 335 |
| attribute | water_depth | actual_range | double | 6.7557313747257774, 10.955753993494003 |
| attribute | water_depth | epic_code | int | 3 |
| attribute | water_depth | FillValue | String | nan |
| attribute | water_depth | ioos_category | String | Other |
| attribute | water_depth | long_name | String | Total water depth |
| attribute | water_depth | maximum | double | 10.955753993494003 |
| attribute | water_depth | minimum | double | 6.7557313747257774 |
| attribute | water_depth | note | String | Water depth calculated by converting P_1ac to sensor depth using S_41 and T_28 from file 11263mc-a.nc + pressure_sensor_height |
| attribute | water_depth | standard_name | String | sea_floor_depth_below_sea_surface |
| attribute | water_depth | units | String | m |
| variable | water_level | double | ||
| attribute | water_level | _ChunkSizes | uint | 335 |
| attribute | water_level | actual_range | double | -2.272221698760986, 1.9173778152465824 |
| attribute | water_level | FillValue | String | nan |
| attribute | water_level | geopotential_datum_name | String | NAVD88 |
| attribute | water_level | ioos_category | String | Other |
| attribute | water_level | long_name | String | Water level NAVD88 |
| attribute | water_level | maximum | double | 1.9173778152465824 |
| attribute | water_level | minimum | double | -2.272221698760986 |
| attribute | water_level | note | String | Water level calculated as brangeAST + zsen |
| attribute | water_level | standard_name | String | sea_surface_height_above_geopotential_datum |
| attribute | water_level | units | String | m |
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.