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ALOHA Cabled Observatory (ACO): Acoustic Doppler Current Profiler (ADCP): Velocity

Listed in NOAA IOOS PacIOOS (Pacific Islands Ocean Observing System) at the University of Hawaii (UH)

The University of Hawaii's ALOHA ("A Long-term Oligotrophic Habitat Assessment") Cabled Observatory (ACO) is located 100 km north of the island of Oahu, Hawaii (22 45'N, 158W) in the North Pacific Ocean.

Description

It provides real-time oceanographic observations from a depth of about 4,800 m via a submarine fiber optic cable that comes ashore at Makaha on Oahu. This data set provides measurements of ocean current velocity at the ACO from a 250 kHz SonTek acoustic doppler current profiler (ADCP) at 1.83 m above the ocean bottom for the most recent 7 days.

Velocities are flagged bad if the amplitude is excessively low or high. An amplitude is high if it exceeds the average of the ping before and the ping after by 20 counts. An amplitude is low if less than 6 counts.

Read the rest (1 more)

After this the velocities are flagged bad if the absolute deviation of the vertical velocity from its ensemble median exceeds 0.15 m/s or if its value is less than -0.25 m/s.

Links

Where it is published

Documentation and papers

Catalogue records · 1

Topics

Provenance · 1 source records, 6 field assertions
SourceKeyLast seenRaw
NOAA IOOS PacIOOS (Pacific Islands Ocean Observing System) at the University of Hawaii (UH)aco_adcp_vel5 d agoJSON v1
FieldAssertionExtractorEvidence
access_levelsource · pae paha pacioos hawaii educonnector:pae_paha_pacioos_hawaii_edu@1.0.0
concepts[field].local:field:ocean-atmosphericmapping · pae paha pacioos hawaii educonnector:pae_paha_pacioos_hawaii_edu@1.0.0
descriptionsource · pae paha pacioos hawaii educonnector:pae_paha_pacioos_hawaii_edu@1.0.0/summary
spatialsource · pae paha pacioos hawaii educonnector:pae_paha_pacioos_hawaii_edu@1.0.0
temporalsource · pae paha pacioos hawaii educonnector:pae_paha_pacioos_hawaii_edu@1.0.0
titlesource · pae paha pacioos hawaii educonnector:pae_paha_pacioos_hawaii_edu@1.0.0/title