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ERDDAP > info > noaaSanctSound_CI02_04_PSD_1h

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 data       graph     files  public NOAA-Navy Sanctuary Soundscape Monitoring Project, Sound Pressure Spectral Density, Channel
Islands, SanctSound_CI02_04_PSD_1h
   ?        I   M   background (external link) RSS Subscribe NOAA noaaSanctSound_CI02_04_PSD_1h

The Dataset's Variables and Attributes

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 CI02_04 between February 05, 2020 and June 04, 2020.
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 CI02_04, SanctSound Data Products. NOAA National Centers for Environmental Information. Accessed [date]. DOI: https://doi.org/http://doi.org/10.25921/mn6x-8a03
attribute NC_GLOBAL comment String Data quality: Quality data were recorded for the duration of the deployment.
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/ (external link)
attribute NC_GLOBAL date_created String 2022-03-21
attribute NC_GLOBAL date_issued String 2022-03-21
attribute NC_GLOBAL defaultGraphQuery String sound_pressure_spectral_density_levels[][]&.draw=surface&.vars=time|frequency|sound_pressure_spectral_density_levels&.yRange=||true|Log
attribute NC_GLOBAL featureType String TimeSeries
attribute NC_GLOBAL geospatial_bounds String POINT (34.08532 -120.523)
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/mn6x-8a03 (external link)
attribute NC_GLOBAL infoUrl String https://ncei.noaa.gov (external link)
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\n 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 (external link)
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 2020-06-04T11:00:00Z
attribute NC_GLOBAL time_coverage_start String 2020-02-05T21:00:00Z
attribute NC_GLOBAL title String NOAA-Navy Sanctuary Soundscape Monitoring Project, Sound Pressure Spectral Density, Channel Islands, SanctSound_CI02_04_PSD_1h
dimension time   double nValues=2871, evenlySpaced=true, averageSpacing=1h 0m 0s
attribute time _CoordinateAxisType String Time
attribute time actual_range double 1.5809364E9, 1.5912684E9
attribute time axis String T
attribute time bounds String time_bounds
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_spectral_density_levels   double time, frequency
attribute sound_pressure_spectral_density_levels cell_methods String time: sum
attribute sound_pressure_spectral_density_levels colorBarMaximum double 110.0
attribute sound_pressure_spectral_density_levels colorBarMinimum double 50.0
attribute sound_pressure_spectral_density_levels comment String Frequency resolution of 1 Hz.
attribute sound_pressure_spectral_density_levels ioos_category String Pressure
attribute sound_pressure_spectral_density_levels long_name String Sound pressure spectrum level
attribute sound_pressure_spectral_density_levels standard_name String sound_intensity_level_in_water
attribute sound_pressure_spectral_density_levels units String dB
variable time_stamp   double time, frequency
attribute time_stamp axis String T
attribute time_stamp colorBarMaximum double 110.0
attribute time_stamp colorBarMinimum double 50.0
attribute time_stamp ioos_category String Time
attribute time_stamp long_name String Timestamp in ISO 8601 date format
attribute time_stamp standard_name String time
attribute time_stamp units String s
variable time_bounds   double time, frequency
attribute time_bounds colorBarMaximum double 110.0
attribute time_bounds colorBarMinimum double 50.0
attribute time_bounds comment String Time interval over which data are calculated
attribute time_bounds ioos_category String Time
attribute time_bounds long_name String Time Bounds
attribute time_bounds standard_name String time
attribute time_bounds time_origin String 01-JAN-1970 00:00:00
attribute time_bounds units String seconds since 1970-01-01T00:00:00Z

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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