DIDSON ultrasonic video data - Untrawlable Habitat Strategic Initiative

The NWFSC FRAM Marine Habitat Ecology Team was involved in many aspects of the National Marine Fisheries Service Untrawlable Habitat Strategic Initiative (UHSI), but focused on the application of DIDSON imaging sonars to aid in quantifying avoidance/attraction biases in fishes relative to two types of mobile sampling vehicles used for direct visual surveys.

At this time, contact the Data Steward for information on obtaining access to this data set. In the near future, the NWFSC will strive to provide all non-sensitive data resources as a web service in order to meet the NOAA Data Access Policy Directive (https://nosc.noaa.gov/EDMC/PD.DA.php).

Data is stored on an external drive

Multibeam sonar data was processed using DIDSON sonar and EchoView sonar software. Processing algorithms were used to remove smaller-sized fish as well as sonar outliers. These data were collected and processed in accordance with established protocols and best practices under the direction of the project's Principal Investigator.

The time required to process the data and perform data control procedures.

The Northwest Fisheries Science Center facilitates backup and recovery of all data and IT components which are managed by IT Operations through the capture of static (point-in-time) backup data to physical media. Once data is captured to physical media (every 1-3 days), a duplicate is made and routinely (weekly) transported to an offsite archive facility where it is maintained throughout the data's applicable life-cycle.