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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 | graph | files | public | NOAA-Navy Sanctuary Soundscape Monitoring Project, Blue Whale Sound Production, Gray's Reef, SanctSound_GR01_01_bluewhale_1d | I M | background | NOAA | noaaSanctSound_GR01_01_bluewhale_1d |
Row Type | Variable Name | Attribute Name | Data Type | Value |
---|---|---|---|---|
attribute | NC_GLOBAL | abstract | String | This record represents blue whale sound production detected from raw passive acoustic data. The Low Frequency Detection and Classification System (LFDCS) call library for blue whales was built for the data sampled at 120 Hz, and created for A, B, and AB phrases. All detections with a Mahalanobis distance of 5.0 or less were manually screened. Daily presence for blue whales was confirmed if there were three song phrases visible, including at least one true detection. Only accepting detections when three or more phrases occurred ensured our confidence in blue whale song presence. These data were recorded at SanctSound Site GR01_01 between December 13, 2018 and May 01, 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. Blue Whale Sound Production Recorded at SanctSound Site GR01_01, SanctSound Data Products. NOAA National Centers for Environmental Information. Accessed [date]. DOI: https://doi.org/http://doi.org/10.25921/nqqv-pe53 |
attribute | NC_GLOBAL | comment | String | Data quality: Quality data were recorded for the duration of the deployment. |
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 (31.396417 -80.8904) |
attribute | NC_GLOBAL | history | String | All acoustic data were processed using the Low Frequency Detection and Classification System (LFDCS; Baumgartner and Mussoline, 2011), which creates conditioned spectrograms using a short-time Fourier transform with a data frame of 512 samples and 75% overlap (80% overlap for the 120 Hz decimated data (blue and fin whales)), resulting in a time step of 64 ms and frequency resolution of 3.9 Hz (for 120 Hz data: 853 ms time step and 0.23 Hz frequency resolution). After tracing contour lines, or “pitch tracks”, through tonal sounds, the program uses multivariate discriminant function analysis to classify the pitch tracks into species-specific call types based on a call library. Each detection is assigned a Mahalanobis distance (MD), which measures the deviation of a sound’s pitch track from the assigned call type (see Baumgartner and Mussoline (2011) for a more complete description). A lower MD indicates a closer match to the assigned call type. For a well-developed call type in the LFDCS (i.e., the seven attributes used in the discriminant function analysis are multivariate normal), 75% of pitch-tracks for the call type will have a MD of 3.0 or less (Baumgartner et al., 2013). Setting a MD threshold is necessary to minimize the false detection rates, but in doing so causes some true detections to be missed in the analysis. The MD threshold of 3.0 was chosen for all vocalizations detected and classified in the humpback, sei, and fin whale call library. However, for blue whales, false detection rates were lower than any of the other species, thus a MD of 5.0 was chosen to decrease the probability of missing true detections. All LFDCS detections were manually reviewed by trained acoustic analysts to determine daily presence of each of the four baleen whale species. A true detection was defined as a pitch track that correctly classified a call or song unit to the species that produced it (Bonnell et al., 2016). Given the variability of each species' call type, the specific methodology to determine daily acoustic presence was different for each species. The LFDCS call library for blue whales was built for the data sampled at 120 Hz, and created for A, B, and AB phrases (as described by Mellinger and Clark (2003); Figure 2d). All detections with a MD of 5.0 or less were manually screened. Daily presence for blue whales was confirmed if there were three song phrases visible, including at least one true detection. Only accepting detections when three or more phrases occurred ensured our confidence in blue whale song presence. Data were processed with LFDCS |
attribute | NC_GLOBAL | id | String | http://doi.org/10.25921/nqqv-pe53 |
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, Blue Whale Sound Production, Gray's Reef, SanctSound_GR01_01_bluewhale_1d |
dimension | start_time | double | nValues=140, evenlySpaced=true, averageSpacing=86400.0 | |
attribute | start_time | actual_range | double | 1.5446592E9, 1.5566688E9 |
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 | bluewhale_presence | double | start_time | |
attribute | bluewhale_presence | cell_methods | String | time: sum (comment: presence (1) or absence (0) over time interval) |
attribute | bluewhale_presence | comment | String | Presence of Blue Whale (0 = not present; 1 = present) |
attribute | bluewhale_presence | ioos_category | String | Statistics |
attribute | bluewhale_presence | long_name | String | blue whale presence |
attribute | bluewhale_presence | standard_name | String | bluewhale_presence |
attribute | bluewhale_presence | units | String | boolean |
variable | end_time | double | start_time | |
attribute | end_time | actual_range | double | 1.5447456E12, 1.5567552E12 |
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.