This data set presents results testing the station keeping abilities of a tethered Seabotix vLBV300 underwater vehicle equipped with an inertial navigation system. These results are from an offshore deployment on April 20, 2016 off the coast of Newport, OR (44.678 degrees N, 124.109 degrees W). During the mission period, the sea state varied between 3 and 4, with an average significant wave height of 1.6 m. The vehicle utilizes an inertial navigation system based on a Gladiator Landmark 40 IMU coupled with a Teledyne Explorer Doppler Velocity Log to perform station keeping at a desired location and orientation.
Acoustic Doppler Current Profiler (ADCP) data from seafloor tripods in Admiralty Inlet, Puget Sound, Washington. Data collected from April 2009 through December 2012. When using the data, please cite the J. Oceanic Eng. paper included in this submission, and please contact Jim Thomson prior to submitting publications or conference abstracts that use the data.
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Note: This service is deprecated and will be shutdown on June 29th, 2023. Link to Service Change NoticeMapping of old Web Service to the new Web Service can be found here: https://www.weather.gov/media/notification/ref/On-premise__Mapping_To_AWS_Cloud_GIS%20Services_Links.pdf
Note: This service is deprecated and will be shutdown on June 29th, 2023. Link to Service Change NoticeMapping of old Web Service to the new Web Service can be found here: https://www.weather.gov/media/notification/ref/On-premise__Mapping_To_AWS_Cloud_GIS%20Services_Links.pdf
Note: This service is deprecated and will be shutdown on June 29th, 2023. Link to Service Change NoticeMapping of old Web Service to the new Web Service can be found here: https://www.weather.gov/media/notification/ref/On-premise__Mapping_To_AWS_Cloud_GIS%20Services_Links.pdf
The University of Alaska Fairbanks (UAF) Alaska Hydrokinetic Energy Research Center was tasked with developing a real-time data telemetry / remote power generation system to monitor frazil ice conditions in the Kvichak River in support of the U.S. Department of Energy funded "Next Generation MHK River Power System Optimized for Performance, Durability and Survivability" project. A real-time telemetry system was requested because of the short time span between the end of the frazil ice season when the instruments would be recovered, limited vessel availability and the project end-date. To meet the project objectives, UAF designed and assembled a remote power/real-time data telemetry system that included an auto start propane generator, a small PV array, a small battery bank and line-of-sight radios as well as two sonar systems to monitor river velocity and water column acoustic backscatter strength. Both sonars included internal batteries for powering the instruments in case of failure of the shore based power system. The sonars, deployed in ~5 m of water on the bed of the Kvichak River, adjacent to the Village of Igiugig, Alaska were tethered to shore via a waterproof armored cable that conveyed power to the subsurface instruments and data from the instruments to the shore based telemetry system. The instruments were programmed to record data internally as well as to transmit data serially over the cables to the shore based system. The system was in-place between November, 2016 and June, 2017. While the real-time data telemetry system was not successful and the remote power generation power system was only partially successful, the system design included sufficient redundant power in the form of internal instrument batteries to enable the collection of nearly three months of overlapping velocity and backscatter data (from November through February) and a record of acoustic backscatter strength spanning the entire ~150 day frazil ice season between November, 2016 and ~April, 2017. This submission includes the overwinter ice study plan, dataset, and final report. The dataset includes modeled water velocity, discharge, and measured water velocity and acoustic backscatter strength in winter 2016-17 from the Kvichak River at the Village of Igiugig, Alaska, USA.
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