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ERDDAP > info > noaaSanctSound_CI01_08_Explosions

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 data       graph     files  public NOAA-Navy Sanctuary Soundscape Monitoring Project, Explosion Detection Events, Channel
Islands, SanctSound_CI01_08_Explosions
   ?        I   M   background (external link) RSS Subscribe NOAA noaaSanctSound_CI01_08_Explosions

The Dataset's Variables and Attributes

Row Type Variable Name Attribute Name Data Type Value
attribute NC_GLOBAL abstract String This record represents the explosions detected from raw passive acoustic data. All acoustic data were processed using Triton's Explosion Detector, which is based on a cross-correlation of the recording with a template explosion. The detector divides the recording into sequentially analyzed sections of 75 s. The detector outputs are a series of .mat files that can be evaluated using GPLReview. The original wav file was decimated to a sample rate of 12 kHz, a requirement of the algorithm. The default parameters work well for most explosive sounds. These data were recorded at SanctSound Site CI01_08 between July 08, 2021 and September 11, 2021.
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. 2022. Explosion Detection Events Recorded at SanctSound Site CI01_08, SanctSound Data Products. NOAA National Centers for Environmental Information. Accessed [date]. DOI: https://doi.org/http://doi.org/10.25921/wqgk-pr13
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 2022-08-22
attribute NC_GLOBAL date_issued String 2022-08-22
attribute NC_GLOBAL featureType String TimeSeries
attribute NC_GLOBAL geospatial_bounds String POINT (34.0436 -120.0803)
attribute NC_GLOBAL history String All acoustic data were processed using the Explosion Detector within Triton. The detector is based on a cross-correlation of the recording with a template explosion. The detector divides the recording into sections of 75 s, which are analyzed sequentially. The output of the detector is a series of .mat files, that can be read into GPLReview to evaluate. The detector needs audio files with a sample rate of 12 kHz, so decimation of the original wav file (possible in Triton) is required if the sample rate is higher. The default settings of the parameters generally work well for most explosive sounds. The following parameters are used by the Explosion Detector: Threshold Offset: Offset that is added to the median square of correlation coefficient to calculate the threshold. Minimum Time Distance (s): minimum time distance between consecutive explosions. Noise Samples: number of noise samples before and after the signal to be pulled out. RMS Noise Before Signal (dB): Threshold for the minimum difference in root-mean-square sound pressure level between the signal and the time before the detection. RMS Noise After Signal (dB): Threshold for the minimum difference in root-mean-square sound pressure level between the signal and the time after the detection. PP Noise Before Signal (dB): Threshold for the minimum difference in peak-to-peak sound pressure level between the signal and the time before the detection. PP Noise After Signal (dB): Threshold for the minimum difference in peak-to-peak sound pressure level between the signal and the time after the detection. Maximum Explosion Duration (s). Minimum Explosion Duration (s). 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/wqgk-pr13 (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 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 title String NOAA-Navy Sanctuary Soundscape Monitoring Project, Explosion Detection Events, Channel Islands, SanctSound_CI01_08_Explosions
dimension start_time   double nValues=75, evenlySpaced=false, averageSpacing=20010.43135135238
attribute start_time actual_range double 1.625803772309E9, 1.627284544229E9
attribute start_time axis String T
attribute start_time comment String Start time of detections. Corresponding end time for detection in end_time_var at same index value as start_time_var.
attribute start_time ioos_category String Time
attribute start_time long_name String Start Time
attribute start_time standard_name String time
attribute start_time time_origin String 01-JAN-1970 00:00:00
attribute start_time time_precision String 1970-01-01T00:00:00.000Z
attribute start_time units String seconds since 1970-01-01T00:00:00Z
variable explosions_presence   double start_time
attribute explosions_presence cell_methods String time: sum (comment: presence (1) or absence (0) over time interval)
attribute explosions_presence comment String Presence of explosive sound (0 = not present, 1 = present).
attribute explosions_presence ioos_category String Statistics
attribute explosions_presence long_name String explosions presence
attribute explosions_presence standard_name String explosions_presence
attribute explosions_presence units String boolean
variable end_time   double start_time
attribute end_time actual_range double 1.625803772492E12, 1.62728454447E12
attribute end_time axis String T
attribute end_time comment String End time of detections. Corresponding start time for detection in start_time_var at same index value as end_time_var.
attribute end_time ioos_category String Time
attribute end_time long_name String End Time
attribute end_time standard_name String end_time
attribute end_time time_origin String 01-JAN-1970 00:00:00
attribute end_time 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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