Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Skip to content

Bocaccio Sound Production Recorded at SanctSoundSite MB02_02

Metadata Updated: June 16, 2023

This record represents bocaccio calls detection from raw passive acoustic data. Calls were detected automatically using Triton's Fish Detector. Recordings were first decimated to a sample rate of 2 kHz. The fish detector filtered the time series between 100 and 950 Hz, and computed cross-correlation between the envelope of a filtered example call and 75s of the envelope of the filtered time series. To detect signals within varying background noise, we used a floating threshold of the median cross correlation value over the current 75 s of data, with a threshold offset of 2e-9 above the median. Detections were evaluated if they reached above this threshold. Consecutive calls were required to have a minimum time gap of 0.5 s to be detected separately. RMS received level was computed over the potential detection period and a time series of the length of the bocaccio call template before and after the detection. Detections were considered false and discarded if the signal-to-noise ratio between the detection period and the timeseries before and after the detection was less than 0.01. The threshold was evaluated based on the distribution of histograms of manually verified true and false detections. A trained analyst verified the detections as true or false.These data were recorded at SanctSound Site MB02_02 between April 08, 2019 and August 11, 2019.

Access & Use Information

License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources


Metadata Date June 15, 2023
Metadata Created Date February 21, 2022
Metadata Updated Date June 16, 2023
Reference Date(s) June 15, 2023 (publication)
Frequency Of Update asNeeded

Metadata Source

Harvested from NGDC MGG Passive Acoustic

Graphic Preview

Monitoring locations for the SanctSound project. Credit: NOAA

Additional Metadata

Resource Type Dataset
Metadata Date June 15, 2023
Metadata Created Date February 21, 2022
Metadata Updated Date June 16, 2023
Reference Date(s) June 15, 2023 (publication)
Responsible Party NOAA National Centers for Environmental Information (Point of Contact)
Contact Email
Guid gov.noaa.ncei.pad:NOAA-Navy-SanctSound_MB02_02_bocaccio
Access Constraints Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives., Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose., Cite as: NOAA Office of National Marine Sanctuaries and U.S Navy. 2021. Bocaccio Sound Production Recorded at SanctSoundSite MB02_02, SanctSound Data Products. NOAA National Centers for Environmental Information. [access date].
Bbox East Long -121.9084
Bbox North Lat 36.6495
Bbox South Lat 36.6495
Bbox West Long -121.9084
Coupled Resource
Frequency Of Update asNeeded
Graphic Preview Description Monitoring locations for the SanctSound project. Credit: NOAA
Graphic Preview File
Graphic Preview Type jpeg
Harvest Object Id ecb2233c-4cd9-4002-a18d-a16a91d9f5ea
Harvest Source Id 8812445c-2f10-47c5-80d9-c1bc92ca956d
Harvest Source Title NGDC MGG Passive Acoustic
Metadata Language eng; USA
Metadata Type geospatial
Old Spatial {"type": "Point", "coordinates": [-121.9084, 36.6495]}
Progress completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 2019-04-08T20:00:00Z
Temporal Extent End 2019-08-11T01:00:00Z

Didn't find what you're looking for? Suggest a dataset here.