Documentation for University of Washington Seaglider records archived at NODC (NODC Accession 0092291)

Metadata Updated: February 27, 2019

Seagliders are small (1.8m hull), reusable, long-range, and buoyancy-driven autonomous underwater vehicles (AUVs) designed to glide from the ocean surface to as deep as 1-km depth and back while collecting profiles of temperature, conductivity (hence salinity), dissolved oxygen, chlorophyll fluorescence, and optical backscatter at varying vertical resolutions. Seagliders collect measurements along saw-tooth paths with a slope of 1:1-3.5 through the ocean at speeds through the water of about 20 cm/s. They are commanded remotely and report their data in near-real time via Iridium satellite data telemetry. They use GPS navigation at sea surface to dead reckon underwater toward commanded targets. Differences between dead-reckoned and actual displacements permit estimation of the depth-averaged horizontal velocity. Estimates of geostropic or cyclostrophic shear can be integrated vertically and referenced to the depth-averaged current to obtain sections of absolute geostrophic current with typical errors of the order of 0.01 m/s. The difference between observed and expected descent rate gives a profile of vertical velocity, showing internal wave and turbulent deep mixing activity.

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Dates

Metadata Date April 21, 2017
Metadata Created Date December 20, 2015
Metadata Updated Date February 27, 2019
Reference Date(s) July 17, 2012 (publication)
Frequency Of Update asNeeded

Metadata Source

Harvested from NOAA CSW Harvest Source

Additional Metadata

Resource Type Nongeographicdataset
Metadata Date April 21, 2017
Metadata Created Date December 20, 2015
Metadata Updated Date February 27, 2019
Reference Date(s) July 17, 2012 (publication)
Responsible Party (Point of Contact)
Contact Email
Access Constraints Cite as: Eriksen, Charles; University of Washington (2012). Documentation for University of Washington Seaglider records archived at NODC (NODC Accession 0092291). Version 1.1. National Oceanographic Data Center, NOAA. Dataset. [access date], NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
Bbox East Long
Bbox North Lat
Bbox South Lat
Bbox West Long
Coupled Resource
Frequency Of Update asNeeded
Guid gov.noaa.nodc:0092291
Harvest Object Id 1f98a05f-8e31-4bce-97f4-eaa58c166014
Harvest Source Id 2aed8e29-fc5b-4cde-aa66-fb1118fd705e
Harvest Source Title NOAA CSW Harvest Source
Licence accessLevel: Public
Metadata Language eng
Metadata Type geospatial
Progress completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True

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