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46130 results found

Vessel Detection Events Recorded at SanctSound Site HI01_03

Data provided by  National Oceanic and Atmospheric Administration

This record represents the individual vessel events detected from raw passive acoustic data. Events are identified from the long-term spectral average (LTSAs) created for each site with a 5 s, 48 kHz resolution. The LTSA is analyzed in blocks where the calibrated power spectral density estimates are averaged in user-defined low, medium and high frequency bands. These data were recorded at SanctSound Site HI01_03 between November 30, 2020 and January 18, 2021.

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Modified: 2024-02-22

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Broadband Sound Pressure Levels at 1 Hour Resolution Recorded at SanctSound Site HI03_04

Data provided by  National Oceanic and Atmospheric Administration

This record represents the broadband (BB) sound pressure levels (SPLs) derived from raw passive acoustic data. BB SPLs were calculated by integration of sound pressure spectral density estimates of the mean-square pressure with a 1 Hz/1 second resolution over the frequency band of 20 to 24,000 Hz. The result is then calculated per hour as a median over no less than 1,800 1-second values for that hour and converted to decibels (dB re 1 µPa). These data were recorded at SanctSound Site HI03_04 between December 02, 2021 and May 02, 2022.

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Modified: 2024-02-22

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Sound Pressure Levels for 200 to 1000 Hz at 1 Hour Resolution Recorded at SanctSound Site HI03_04

Data provided by  National Oceanic and Atmospheric Administration

This record represents the sound pressure levels (SPLs) derived from raw passive acoustic data. SPLs were calculated with a 3600 second resolution over the frequency band of 200 to1000 Hz and converted to decibels (dB re 1 µPa). These data were recorded at SanctSound Site HI03_04 between December 02, 2021 and May 02, 2022.

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Modified: 2024-02-22

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Octave Band Sound Pressure Levels at 1 Hour Resolution Recorded at SanctSound Site HI03_04

Data provided by  National Oceanic and Atmospheric Administration

This record represents the octave band sound pressure levels (OLs) derived from raw passive acoustic data. OLs were calculated by integration of sound pressure spectral density estimates of the mean-square pressure with a 1 Hz/1 second resolution over 10 octave bands with the center frequencies ranging from 31.5 to 16,000 Hz. The result is then calculated per hour as a median over no less than 1,800 1-second values for that hour and converted to decibels (dB re 1 ��Pa). These data were recorded at SanctSound Site HI03_04 between December 02, 2021 and May 02, 2022.

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Modified: 2024-02-22

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Sound Pressure Spectral Density at 1 Hertz and 1 Hour Resolution Recorded at SanctSound Site HI03_04

Data provided by  National Oceanic and Atmospheric Administration

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 HI03_04 between December 02, 2021 and May 02, 2022.

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Modified: 2024-02-22

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One-third Octave Band Sound Pressure Levels at 1 Hour Resolution Recorded at SanctSound Site HI03_04

Data provided by  National Oceanic and Atmospheric Administration

This record represents the one-third octave band sound pressure levels (TOLs) derived from raw passive acoustic data. TOLs were calculated by integration of sound pressure spectral density estimates of the mean-square pressure with a 1 Hz/1 second resolution over 30 one-third octave bands with the nominal center frequencies ranging from 25 to 20,000 Hz. The result is then calculated per hour as a median over no less than 1,800 1-second values for that hour and converted to decibels (dB re 1 µPa).

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Modified: 2024-02-22

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Sound Pressure Levels for 200 to 1000 Hz at 1 Hour Resolution Recorded at SanctSound Site HI04_01

Data provided by  National Oceanic and Atmospheric Administration

This record represents the sound pressure levels (SPLs) derived from raw passive acoustic data. SPLs were calculated in Pamguide with a 3600 second resolution over the frequency band of 200 to1000 Hz and converted to decibels (dB re 1 µPa). These data were recorded at SanctSound Site HI04_01 between November 25, 2018 and February 01, 2019.

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Modified: 2024-02-22

Views: 0

Broadband Sound Pressure Levels at 1 Hour Resolution Recorded at SanctSound Site HI04_01

Data provided by  National Oceanic and Atmospheric Administration

This record represents the broadband (BB) sound pressure levels (SPLs) derived from raw passive acoustic data. BB SPLs were calculated by integration of sound pressure spectral density estimates of the mean-square pressure with a 1 Hz/1 second resolution over the frequency band of 20 to 24,000 Hz. The result is then calculated per hour as a median over no less than 1,800 1-second values for that hour and converted to decibels (dB re 1 µPa). These data were recorded at SanctSound Site HI04_01 between November 25, 2018 and February 01, 2019.

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Modified: 2024-02-22

Views: 0

Humpback Whale Sound Production Recorded at SanctSound Site HI04_01

Data provided by  National Oceanic and Atmospheric Administration

This record represents humpback whale sound production detected from raw passive acoustic data.All continuous acoustic data were divided into 30 s wav file subsamples and processed using a machine learning humpback whale detector model developed and provided by Google (GoogleAI; Matt Harvey). The presence of humpback whale song is scored by the model and, compared to a choosen threshold, was assigned a binary 0/1 designation indicating absence (0) or presence (1).

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Modified: 2024-02-22

Views: 0

Octave Band Sound Pressure Levels at 1 Hour Resolution Recorded at SanctSound Site HI04_01

Data provided by  National Oceanic and Atmospheric Administration

This record represents the octave band sound pressure levels (OLs) derived from raw passive acoustic data. OLs were calculated by integration of sound pressure spectral density estimates of the mean-square pressure with a 1 Hz/1 second resolution over 10 octave bands with the center frequencies ranging from 31.5 to 16,000 Hz. The result is then calculated per hour as a median over no less than 1,800 1-second values for that hour and converted to decibels (dB re 1 ��Pa). These data were recorded at SanctSound Site HI04_01 between November 25, 2018 and February 01, 2019.

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Modified: 2024-02-22

Views: 0