NOAA-Navy Sanctuary Soundscape Monitoring Project, Explosion Detection Events, Channel Islands, SanctSound_CI05_04_Explosions

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.
abstract=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 CI05_04 between December 21, 2019 and May 07, 2020.
acknowledgement=This project received funding from the U.S. Navy.
cdm_data_type=TimeSeries
citation=Cite as: NOAA Office of National Marine Sanctuaries and U.S Navy. 2021. Explosion Detection Events Recorded at SanctSound Site CI05_04, SanctSound Data Products. NOAA National Centers for Environmental Information. Accessed [date]. DOI: https://doi.org/http://doi.org/10.25921/2hqy-9j21
comment=Data quality: Sudden gain increase from March 21 till March 26. There is a 0.2 hrs gap between the end of the file SanctSound_CI05_04_200419054156.wav and the start of the file SanctSound_CI05_04_200419060303.wav
contributor_name=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
contributor_role=Principal Investigator
Conventions=COARDS, CF-1.6, ACDD-1.3
featureType=TimeSeries
geospatial_bounds=POINT (34.0178 -119.317)
history=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).
id=http://doi.org/10.25921/2hqy-9j21
infoUrl=https://ncei.noaa.gov
institution=NOAA
instrument=SoundTrap ST500
keywords_vocabulary=GCMD Science Keywords
naming_authority=NOAA-Navy
project=NOAA-Navy Sanctuary Soundscape Monitoring Project
sourceUrl=(local files)
standard_name_vocabulary=CF Standard Name Table v55

国家海洋和大气管理局（NOAA）及美国海军携手致力于深入探究美国国家海洋保护区系统内的水下声学现象。自2018年至2021年，这两家机构将与众多科学合作伙伴共同研究七个国家海洋保护区以及一个海洋国家纪念地的声学环境，涵盖夏威夷群岛以及东、西海岸海域。通过标准化测量，评估海洋动物、物理过程（如风浪）以及人类活动产生的声音。这些信息的综合分析将有助于NOAA和海军在保护区中测量声级和声学基线条件。此项研究是海军和NOAA持续研究工作的延续，包括国家海洋保护区办公室的努力。该数据集代表了存储于NOAA国家环境信息中心的原始声学数据的派生产品。

搜集汇总

背景与挑战

背景概述

该数据集记录了Channel Islands特定站点在2019年12月至2020年5月期间检测到的水下爆炸事件，使用Triton爆炸探测器处理原始声学数据生成。数据旨在帮助NOAA和美国海军评估海洋保护区内的声学环境，特别是人类活动产生的声音影响。