Description
Patterns in acoustically derived biological scatter through the water column will be collected with multi-frequency scientific echosounders (Simrad EK80) operating at 18kHz, 38kHz, 70kHz and 120kHz following protocols developed during the NOAA NRDA DAP data collection operations. Specifically, during each cruise, transducers will be installed on a rigid pole mounted to the side of the ship, and calibrated at sea for operating conditions following protocols developed by Dr. Boswell during the ONSAP/DAP cruises. The dynamics of the mesopelagic scattering community will be examined through the depth dependent scattering responses at both frequencies (18 and 38kHz) as well as through the difference between the mean volume backscattering strength (MVBS; in dB) at 18 kHz and 38 kHz (dMVBS(18-38)). In addition, scatterers in the upper water column (~150m) will be examined by analyzing the all four available frequencies.
Resources
| Name | Format | Description | Link |
|---|---|---|---|
| AWS Cloud Storage Bucket | Unknown | AWS Cloud Storage to provide additional public access to water column sonar data through the NOAA Open Data Dissemination project (NODD) | Open resource |
| Global Change Master Directory (GCMD) Keywords | Unknown | 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. | Open resource |
| Global Change Master Directory (GCMD) Keywords | Unknown | 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. | Open resource |
| Global Change Master Directory (GCMD) Keywords | Unknown | 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. | Open resource |
| Global Change Master Directory (GCMD) Keywords | Unknown | 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. | Open resource |
| NCEI Contact Information | Unknown | Information for contacts at NCEI. | Open resource |
| Water Column Sonar Data Map Viewer | Unknown | Interactive map viewer to allow discovery and access to water column sonar data | Open resource |
| Water Column Sonar Data Archive Homepage | Unknown | Web page containing information on the water column sonar data archive. | Open resource |
| International Hydrographic Organization (IHO) Sea Area ("Limits of Oceans and Seas" publication S-23) | Publication of Sea Areas is maintained by IHO. | Open resource |
Tags
- acoustic scattering
- acoustic sounders
- aquatic ecosystems
- aquatic sciences
- bathymetry
- bathymetry/seafloor topography
- benthic
- biosphere
- doc/noaa/nesdis/ncei
- doc/noaa/nesdis/ngdc
- earth science
- ecosystems
- fisheries
- gulf of mexico
- in situ/laboratory instruments
- marine ecosystems
- national centers for environmental information
- national geophysical data center
- nesdis
- noaa
- ocean acoustics
- oceans
- pelagic
- profilers/sounders
- seafloor topography
- u.s. department of commerce
- vertical location
- water column
- water column mapping system
- wcms