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Grid DAP Data | Sub- set | Table DAP Data | Make A Graph | W M S | Source Data Files | Acces- sible | Title | Sum- mary | FGDC, ISO, Metadata | Back- ground Info | RSS | E | Institution | Dataset ID |
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data | files | public | NOAA-Navy Sanctuary Soundscape Monitoring Project, Vessel Detection Events, Channel Islands, SanctSound_CI02_02_ships | I M | background | NOAA | noaaSanctSound_CI02_02_ships |
Row Type | Variable Name | Attribute Name | Data Type | Value |
---|---|---|---|---|
attribute | NC_GLOBAL | abstract | String | 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 CI02_02 between March 25, 2019 and July 23, 2019. |
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. 2021. Vessel Detection Events Recorded at SanctSound Site CI02_02, SanctSound Data Products. NOAA National Centers for Environmental Information. Accessed [date]. DOI: https://doi.org/http://doi.org/10.25921/p8rs-3n85 |
attribute | NC_GLOBAL | comment | String | Data quality: Amplitude drift in frequencies below 80 Hz. |
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/ |
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 (34.0854 -120.5233) |
attribute | NC_GLOBAL | history | String | Vessel events (individual events) were detected using Triton's Ship-Detector Remora. An LTSA is created for each site with a 5 s, 48 kHz resolution; events are identified from these LTSAs. Individual site settings are tested using the Interactive Detector and most conservative settings are run using the Batch Detector. The LTSA is analyzed in blocks of data (windows), where the calibrated sound pressure spectral density (PSD) estimates are averaged in three frequency bands; low, medium and high (defined by user). Start and end times of the events are detected and stored if the three averaged PSDs meet three conditions (all values set by user): 1. Amplitude is above a user-defined, time-dependent amplitude threshold computed using a histogram method of the averaged PSDs; 2. The event duration is above a user-defined time in the three bands. The duration in the higher band must be shorter that the medium band, or the event duration above the threshold in the lower and medium band must be longer than the user specified time, and the duration in the medium band must be shorter than the lower band; 3. Events are distinguished from weather events when averaged received levels of the event in the lower band are above a user specified percentage of the background sound in the window. The window length and the overlapping time with the next consecutive window is defined by the user. Once Batch Detector is run, user reviews results and corrects labelled events to either Ambient (non-ship source) or Ship. Low Band=100-5,000 Hz, Medium Band=5,000-10,000 Hz, High Band=10,000–48,000 Hz, Close Passage Duration Threshold: 50 s, Distant Passage Duration Threshold: 150 s, Relative Threshold Level = 0.05%, Time Between Passages = 0.01 hr, Buffer Time (min): 5, Window Size (h): 2, Sliding Time Overlapping Windows (h) = 0.5. 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/p8rs-3n85 |
attribute | NC_GLOBAL | infoUrl | String | https://ncei.noaa.gov |
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 |
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, Vessel Detection Events, Channel Islands, SanctSound_CI02_02_ships |
dimension | start_time | double | nValues=1, onlyValue=2019-06-20T12:13:30.000Z | |
attribute | start_time | actual_range | double | 1.56103281E9, 1.56103281E9 |
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 | ships_presence | double | start_time | |
attribute | ships_presence | cell_methods | String | time: sum (comment: presence (1) or absence (0) over time interval) |
attribute | ships_presence | comment | String | Presence of Vessels (0/noship = not present; 1/ship = present) |
attribute | ships_presence | ioos_category | String | Statistics |
attribute | ships_presence | long_name | String | ships presence |
attribute | ships_presence | standard_name | String | ships_presence |
attribute | ships_presence | units | String | boolean |
variable | end_time | double | start_time | |
attribute | end_time | actual_range | double | 1.561033785E12, 1.561033785E12 |
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.