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| Grid DAP Data | Sub- set | Table DAP Data | Make A Graph | W M S | Source Data Files | Acces- sible
| Title | Sum- mary | FGDC, ISO, Metadata | Back- ground Info | RSS | E | Institution | Dataset ID |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| data | graph | files | public | NOAA-Navy Sanctuary Soundscape Monitoring Project, Sound Pressure Spectral Density, Channel Islands, SanctSound_CI01_01_PSD_1h |
| M | background
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| NOAA | noaaSanctSound_CI01_01_PSD_1h |
| Row Type | Variable Name | Attribute Name | Data Type | Value |
|---|---|---|---|---|
| attribute | NC_GLOBAL | abstract | String | This record represents the sound pressure spectral density (PSD) levels derived from raw passive acoustic data. The hourly PSD levels were calculated as the median of mean-square pressure amplitude (µPa^2) with a frequency resolution of 1 Hz from 20 Hz to 24,000 Hz over no less than 1,800 seconds in each hour and converted to decibels (dB re 1 µPa^2/Hz). These data were recorded at SanctSound Site CI01_01 between October 31, 2018 and February 20, 2019. |
| attribute | NC_GLOBAL | acknowledgement | String | This project received funding from the U.S. Navy. |
| attribute | NC_GLOBAL | cdm_data_type | String | TimeSeries |
| attribute | NC_GLOBAL | citation | String | Cite as: NOAA Office of National Marine Sanctuaries and U.S Navy. 2021. Sound Pressure Spectral Density at 1 Hertz and 1 Hour Resolution Recorded at SanctSound Site CI01_01, SanctSound Data Products. NOAA National Centers for Environmental Information. Accessed [date]. DOI: https://doi.org/http://doi.org/10.25921/g56f-4v55 |
| attribute | NC_GLOBAL | comment | String | Data quality: Sudden drop of levels below noise floor starting December 15, 2018. |
| attribute | NC_GLOBAL | contributor_name | String | Simone Baumann-Pickering, Scripps Institution of Oceanography; Leila Hatch, NOAA Stellwagen Bank National Marine Sanctuary; John Joseph, U.S. Naval Postgraduate School; Anke Kuegler, Hawai'i Institute of Marine Biology, University of Hawai'i at Manoa; Marc Lammers, NOAA Hawaiian Islands Humpback Whale National Marine Sanctuary; Tetyana Margolina, U.S. Naval Postgraduate School; Karlina Merkens, NOAA Pacific Islands Fisheries Science Center; Lindsey Peavey Reeves, NOAA Channel Islands National Marine Sanctuary; Timothy Rowell, NOAA Northeast Fisheries Science Center; Jenni Stanley, Woods Hole Oceanographic Institution; Alison Stimpert, Moss Landing Marine Laboratories; Sofie Van Parijs, NOAA Northeast Fisheries Science Center; Eden Zang,NOAA Hawaiian Islands Humpback Whale National Marine Sanctuary |
| attribute | NC_GLOBAL | contributor_role | String | Principal Investigator |
| attribute | NC_GLOBAL | Conventions | String | COARDS, CF-1.6, ACDD-1.3 |
| attribute | NC_GLOBAL | creator_email | String | ncei.info at noaa.gov |
| attribute | NC_GLOBAL | creator_name | String | NOAA NCEI |
| attribute | NC_GLOBAL | creator_url | String | https://www.ncei.noaa.gov/ |
| attribute | NC_GLOBAL | date_created | String | 2022-08-22 |
| attribute | NC_GLOBAL | date_issued | String | 2022-08-22 |
| attribute | NC_GLOBAL | defaultGraphQuery | String | sound_pressure_levels[][]&.draw=surface&.vars=time|frequency|sound_pressure_levels&.yRange=||true|Log |
| attribute | NC_GLOBAL | featureType | String | TimeSeries |
| attribute | NC_GLOBAL | geospatial_bounds | String | POINT (34.0438 -120.0811) |
| attribute | NC_GLOBAL | history | String | Sound pressure spectral density (PSD) levels in units of 1 µPa^2/Hz were calculated using Welch's Method in Matlab (FFT length = 48,000 points, Hann window length = 48,000, FFT overlap = 0%), resulting in PSD estimates of mean-square pressure amplitude (µPa^2) with a frequency resolution of 1 Hz and temporal resolution of 1 second. For every 1-Hertz (Hz) frequency band from 20 Hz to 24,000 Hz, PSD levels per hour were calculated as the median of mean-square pressure amplitude (µPa^2) over no less than 1,800 seconds for that hour. PSD levels per hour for each frequency band were converted to decibels (dB re 1 µPa^2/Hz). Data were processed with Triton - Soundscape Metrics Remora (Github commit '44f0f20'; Feb 9, 2020) and Matlab (2016b and newer; statistics toolbox). |
| attribute | NC_GLOBAL | id | String | http://doi.org/10.25921/g56f-4v55 |
| attribute | NC_GLOBAL | infoUrl | String | https://ncei.noaa.gov |
| attribute | NC_GLOBAL | institution | String | NOAA |
| attribute | NC_GLOBAL | instrument | String | SoundTrap ST500 |
| attribute | NC_GLOBAL | keywords | String | acoustic attenuation/transmission, acoustics, ambient noise, aquatic ecosystems, cetacean, environmental, fish, frequency, intensity, marine environment monitoring, marine habitat, national centers for environmental information, Navy, NOAA, ocean acoustics, oceans, office of national marine sanctuaries, passive acoustic recorder, pressure, sound_intensity_level_in_water, soundscapes |
| attribute | NC_GLOBAL | keywords_vocabulary | String | GCMD Science Keywords |
| attribute | NC_GLOBAL | license | String | The data may be used and redistributed for free but are not intended for legal use, since it may contain inaccuracies. Neither the data creator, 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 | naming_authority | String | NOAA-Navy |
| attribute | NC_GLOBAL | project | String | NOAA-Navy Sanctuary Soundscape Monitoring Project |
| attribute | NC_GLOBAL | publisher_email | String | erd.data at noaa.gov |
| attribute | NC_GLOBAL | publisher_name | String | NOAA NMFS SWFSC ERD |
| attribute | NC_GLOBAL | publisher_type | String | institution |
| attribute | NC_GLOBAL | publisher_url | String | https://www.pfeg.noaa.gov |
| attribute | NC_GLOBAL | sourceUrl | String | (local files) |
| attribute | NC_GLOBAL | standard_name_vocabulary | String | CF Standard Name Table v55 |
| attribute | NC_GLOBAL | summary | String | NOAA and the U.S. Navy are working to better understand underwater sound within the U.S. National Marine Sanctuary System. From 2018 to 2021, these agencies will work with numerous scientific partners to study sound within seven national marine sanctuaries and one marine national monument, which includes waters off Hawai'i and the east and west coasts. Standardized measurements will assess sounds produced by marine animals, physical processes (e.g., wind and waves), and human activities. Collectively, this information will help NOAA and the Navy measure sound levels and baseline acoustic conditions in sanctuaries. This work is a continuation of ongoing Navy and NOAA research, including efforts by NOAA's Office of National Marine Sanctuaries This dataset represents the derived products from the raw acoustic data that are archived at NOAA National Centers for Environmental Information. |
| attribute | NC_GLOBAL | time_coverage_end | String | 2018-12-15T08:00:00Z |
| attribute | NC_GLOBAL | time_coverage_start | String | 2018-10-31T22:00:00Z |
| attribute | NC_GLOBAL | title | String | NOAA-Navy Sanctuary Soundscape Monitoring Project, Sound Pressure Spectral Density, Channel Islands, SanctSound_CI01_01_PSD_1h |
| dimension | time | double | nValues=1064, evenlySpaced=false, averageSpacing=1h 0m 10s | |
| attribute | time | _CoordinateAxisType | String | Time |
| attribute | time | actual_range | double | 1.5410232E9, 1.5448608E9 |
| attribute | time | axis | String | T |
| attribute | time | comment | String | Start times of 1-hour bins over which sound pressure levels are calculated |
| attribute | time | ioos_category | String | Time |
| attribute | time | long_name | String | Time |
| attribute | time | standard_name | String | time |
| attribute | time | time_origin | String | 01-JAN-1970 00:00:00 |
| attribute | time | time_precision | String | 1970-01-01T00:00:00Z |
| attribute | time | units | String | seconds since 1970-01-01T00:00:00Z |
| dimension | frequency | double | nValues=23981, evenlySpaced=true, averageSpacing=1.0 | |
| attribute | frequency | actual_range | double | 20.0, 24000.0 |
| attribute | frequency | comment | String | Frequency resolution of 1 Hz. |
| attribute | frequency | ioos_category | String | Other |
| attribute | frequency | long_name | String | frequency |
| attribute | frequency | standard_name | String | sound_frequency |
| attribute | frequency | time_precision | String | 1970-01-01T00:00:00Z |
| attribute | frequency | units | String | Hz |
| variable | sound_pressure_levels | double | time, frequency | |
| attribute | sound_pressure_levels | cell_methods | String | time: sum |
| attribute | sound_pressure_levels | colorBarMaximum | double | 110.0 |
| attribute | sound_pressure_levels | colorBarMinimum | double | 50.0 |
| attribute | sound_pressure_levels | comment | String | Sound pressure level for time bin |
| attribute | sound_pressure_levels | ioos_category | String | Pressure |
| attribute | sound_pressure_levels | long_name | String | sound pressure levels |
| attribute | sound_pressure_levels | standard_name | String | sound_pressure_level_in_water |
| attribute | sound_pressure_levels | units | String | dB |
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.