NOAA-Navy Sanctuary Soundscape Monitoring Project, Sound Pressure Spectral Density, Channel Islands, SanctSound_CI04_05_PSD_1h

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 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 CI04_05 between June 04, 2020 and October 22, 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. Sound Pressure Spectral Density at 1 Hertz and 1 Hour Resolution Recorded at SanctSound Site CI04_05, SanctSound Data Products. NOAA National Centers for Environmental Information. Accessed [date]. DOI: https://doi.org/http://doi.org/10.25921/64tg-mh07
comment=Data quality: Quality data were recorded for the duration of the deployment.
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
defaultGraphQuery=sound_pressure_levels[][]&.draw=surface&.vars=time|frequency|sound_pressure_levels&.yRange=||true|Log
featureType=TimeSeries
geospatial_bounds=POINT (33.8489 -120.1171)
history=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).
id=http://doi.org/10.25921/64tg-mh07
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
time_coverage_end=2020-10-22T07:00:00Z
time_coverage_start=2020-06-04T13:00:00Z

{'abstract': '美国国家海洋保护区系统内的水下声音研究，由美国国家海洋和大气管理局（NOAA）与美国海军协作进行，旨在深化对该区域声学环境的理解。自2018年至2021年，这些机构与众多科学合作伙伴共同研究七个国家级海洋保护区及一个海洋国家纪念地的声学状况，涉及夏威夷岛及美国东西海岸海域。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。这些信息综合起来，将有助于NOAA和海军评估保护区内的声音水平和声学基线条件。此研究是海军和NOAA持续研究的延续，包括NOAA国家海洋保护区办公室的努力。本数据集代表从NOAA国家环境信息中心存档的原始声学数据中派生出的产品。', 'acknowledgement': '本科研项目获得美国海军的资助。', 'cdm_data_type': '时间序列数据', 'citation': '引用格式：美国国家海洋保护区办公室及美国海军。2021。在SanctSound站点CI04_05记录的1赫兹和1小时分辨率的声压级谱密度，SanctSound数据产品。NOAA国家环境信息中心。访问日期。[DOI：https://doi.org/http://doi.org/10.25921/64tg-mh07]', 'comment': '数据质量：部署期间记录了高质量数据。', 'contributor_name': 'Simone Baumann-Pickering，斯克里普斯海洋研究所；Leila Hatch，NOAA Stellwagen Bank国家海洋保护区；John Joseph，美国海军研究生院；Anke Kuegler，夏威夷海洋生物研究所，夏威夷大学马诺阿分校；Marc Lammers，NOAA夏威夷群岛座头鲸国家海洋保护区；Tetyana Margolina，美国海军研究生院；Karlina Merkens，NOAA太平洋岛屿渔业科学中心；Lindsey Peavey Reeves，NOAA海峡群岛国家海洋保护区；Timothy Rowell，NOAA东北渔业科学中心；Jenni Stanley，伍兹霍尔海洋研究所；Alison Stimpert，莫斯兰丁海洋实验室；Sofie Van Parijs，NOAA东北渔业科学中心；Eden Zang，NOAA夏威夷群岛座头鲸国家海洋保护区', 'contributor_role': '首席研究员', 'Conventions': 'COARDS, CF-1.6, ACDD-1.3', 'defaultGraphQuery': '声音压力水平[][]&.draw=surface&.vars=time|frequency|sound_pressure_levels&.yRange=||true|Log', 'featureType': '时间序列', 'geospatial_bounds': '点(33.8489 -120.1171)', 'history': "声压级谱密度（PSD）以1 µPa^2/Hz为单位，采用Welch方法在Matlab中计算（FFT长度=48,000点，汉宁窗口长度=48,000，FFT重叠=0%），从而得到具有1 Hz频率分辨率和1秒时间分辨率的均方压力幅度（µPa^2）PSD估计值。对于20 Hz至24,000 Hz的每个1赫兹（Hz）频率带，每小时的PSD水平被计算为该小时至少1800秒内均方压力幅度（µPa^2）的中值。每个频率带的每小时PSD水平被转换为分贝（dB re 1 µPa^2/Hz）。数据经过Triton - 声境度量Remora（Github提交'44f0f20'；2020年2月9日）和Matlab（2016b及更新版本；统计工具箱）处理。", 'id': 'http://doi.org/10.25921/64tg-mh07', 'infoUrl': 'https://ncei.noaa.gov', 'institution': 'NOAA', 'instrument': 'SoundTrap ST500', 'keywords_vocabulary': 'GCMD科学关键词', 'naming_authority': 'NOAA-Navy', 'project': 'NOAA-Navy Sanctuary Soundscape Monitoring Project', 'sourceUrl': '(本地文件)', 'standard_name_vocabulary': 'CF标准名称表v55', 'time_coverage_end': '2020-10-22T07:00:00Z', 'time_coverage_start': '2020-06-04T13:00:00Z'}