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GCMD Data Center Keywords |
Global Change Master Directory (GCMD) Data Center Keywords |
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GCMD Instrument Keywords |
Global Change Master Directory (GCMD) Instrument Keywords |
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GCMD Location Keywords |
Global Change Master Directory (GCMD) Location Keywords |
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GCMD Platform Keywords |
Global Change Master Directory (GCMD) Platform Keywords |
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GCMD Project Keywords |
Global Change Master Directory (GCMD) Project Keywords |
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GCMD Science Keywords |
Global Change Master Directory (GCMD) Science Keywords |
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International DOI Foundation (IDF) |
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LFDCS |
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NOAA National Centers for Environmental Information |
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NOAA-Navy Sanctuary Soundscapes Monitoring Project (SanctSound) |
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Sei Whale Sound Production Recorded at SanctSound Site SB02_03 |
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10.25921/vdkb-a250
NCEI Metadata ID: gov.noaa.ncei.pad:NOAA-Navy-SanctSound_SB02_03_LFDCS_seiwhale_1d
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https://sanctuaries.noaa.gov/science/monitoring/sound/ |
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Alison Stimpert |
Moss Landing Marine Laboratories |
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principalInvestigator |
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Anke Kuegler |
Hawai'i Institute of Marine Biology, University of Hawai'i at Manoa |
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principalInvestigator |
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Carrie Wall |
NOAA National Centers for Environmental Information |
NCEI Passive Acoustic Archive Lead |
pad.info@noaa.gov |
pointOfContact |
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Eden Zang |
NOAA Hawaiian Islands Humpback Whale National Marine Sanctuary |
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principalInvestigator |
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Genevieve Davis |
NOAA Northeast Fisheries Science Center |
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collaborator |
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Jenni Stanley |
Woods Hole Oceanographic Institution |
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principalInvestigator |
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John Joseph |
U.S. Naval Postgraduate School |
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principalInvestigator |
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Karlina Merkens |
NOAA Pacific Islands Fisheries Science Center |
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principalInvestigator |
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Leila Hatch |
NOAA Stellwagen Bank National Marine Sanctuary |
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principalInvestigator |
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Lindsey Peavey Reeves |
NOAA Channel Islands National Marine Sanctuary |
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principalInvestigator |
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Marc Lammers |
NOAA Hawaiian Islands Humpback Whale National Marine Sanctuary |
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principalInvestigator |
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GCMD Landing Page |
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NASA Goddard Space Flight Center, Earth Science Data and Information System |
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custodian |
https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords |
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NCEI (pointOfContact) |
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NOAA National Centers for Environmental Information |
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ncei.info@noaa.gov |
pointOfContact |
https://www.ncei.noaa.gov/contact |
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NOAA National Centers for Environmental Information |
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publisher |
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NCEI (distributor) |
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NOAA National Centers for Environmental Information |
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ncei.info@noaa.gov |
distributor |
https://www.ncei.noaa.gov/contact |
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NOAA Office of National Marine Sanctuaries |
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author |
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Office of National Marine Sanctuaries |
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sponsor |
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Simone Baumann-Pickering |
Scripps Institution of Oceanography |
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principalInvestigator |
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Sofie Van Parijs |
NOAA Northeast Fisheries Science Center |
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principalInvestigator |
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Tetyana Margolina |
U.S. Naval Postgraduate School |
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principalInvestigator |
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Timothy Rowell |
NOAA Northeast Fisheries Science Center |
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principalInvestigator |
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U.S. Navy |
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author |
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U.S. Navy |
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sponsor |
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http://doi.org/10.25921/vdkb-a250 |
Metadata Landing Page |
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information |
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https://coastwatch.pfeg.noaa.gov/erddap/griddap/noaaSanctSound_SB02_03_LFDCS_seiwhale_1d.html |
NOAA-Navy Sanctuary Soundscapes Monitoring Project, Sei Whale Sound Production, Stellwagen
Bank SB02_03_seiwhale |
Request a data subset, graph, or map from a gridded dataset through ERDDAP griddap |
download |
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https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords |
Global Change Master Directory (GCMD) Keywords |
The information provided on this page seeks to define how the GCMD Keywords are structured,
used and accessed. It also provides information on how users can participate in the
further development of the keywords. |
information |
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https://sanctuaries.noaa.gov/science/monitoring/sound/ |
Sound Monitoring |
NOAA and the U.S. Navy are working to better understand underwater sound within the
National Marine Sanctuary System. For the next few years, 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 acoustic measurements are used to 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 monitoring and research, including efforts by the NOAA Office of National
Marine Sanctuaries. |
information |
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https://www.ncei.noaa.gov/contact |
NCEI Contact Information |
Information for contacts at NCEI. |
information |
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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 a number
of 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 contains
the 82 ? 34 Hz sei whale downsweeps, which was the call type we focused on in this
study. All sei whale downsweep detections with a MD of 3.0 or less were manually screened
for the daily presence of a doublet or triplet, doublets and triplets were defined
as 2 or 3 repeated downsweeps, respectively, with roughly 3.5 seconds elapsed between
the start of successive calls. Sei whales were considered present if a true detection
(at least one downsweep detected within a doublet or triplet) was found for that day.
Only the occurrence of the downsweeps as doublet or triplets were selected to ensure
confidence in species identification.
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Data were processed with LFDCS
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