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Details of Galway Bay Cable Observatory - CTD time-series

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Dataset identification

Title of datasetGalway Bay Cable Observatory - CTD time-series
Narrative summary of datasetThe Galway Bay Subsea observatory was installed in 2015 on the seafloor in the Galway Bay Marine and Renewable Energy Test Site, which is an area 1.5km off Spiddal pier and is used primarily to test small-scale ocean energy devices. The observatory uses cameras, probes and sensors to permit continuous and remote live underwater monitoring. This observatory equipment will allow ocean energy developers to monitor how their devices are performing in the ocean as well as give ocean researchers unique real-time access to monitor ongoing changes in the marine environment. Data relating to the marine environment at the site are now being transferred in real-time from the Galway Bay Observatory to the Marine Institute headquarters and onwards onto the internet. The data currently includes a live video stream, the depth of the observatory node, the sea temperature and salinity, and estimates of the chlorophyll and turbidity levels in the water which give an indication of the volume of phytoplankton and other particles, such as sediment, in the water. The data platform for the Galway Bay Observatory has been built using Big Data technology, so that when new instruments are plugged into the cable system it is straightforward to include the new data streams into the system. The real-time underwater video footage and all the data from the various sensors and instruments is continuously refreshed and displayed online. The web-viewer can be accessed using the Google Chrome web browser at: http://smartbay.marine.ie.
Summary of processing methodologyData are streamed from sensors on the observatory to a shore station. The data at the shore station are synchronised with servers at the Marine Institute and the data are transferred into a NoSQL database. These data are made available in daily and monthly zipped packages at: http://spiddal.marine.ie/data/ctds/ One month's data has been attached to this submission given the data volumes. Earlier months are available for ingestion from the weblink provided above.
Project/programmeGalway Bay Cable Observatory
Start date2015-11-19
End date2018-03-01
Frequency of observationsminute to sub-hour

Responsible organisations

CountryIreland
Organisation nameMarine Institute
Role of organisationOriginator of Dataset

Dataset availability

Original dataset download linkhttps://cloud.emodnet-ingestion.eu/index.php/s/mpxSN5vVKy4p46H
Dataset formatText or Plaintext
Public accessNo limitations
License for useCC-BY 4.0
TypeDataset
Link to dataset after processing by data centrehttp://seadatanet.maris2.nl/v_cdi_v3/search.asp?bookmark=7058
Date of processed dataset publication2018-05-15

Locations

Map
Latitude north boundary53.22733
Longitude east boundary-9.26629
Latitude south boundary53.22733
Longitude west boundary-9.26629
Coordinate reference systemWorld Geodetic System 84
Sea areaNortheast Atlantic Ocean (40W)
Vertical extent minimum20 Metres
Vertical extent maximum20 Metres

Data types, collection and processing

Observation typeAcoustics
Water column temperature and salinity
Sea level
ParameterSea level
Electrical conductivity of the water column
Salinity of the water column
Sound velocity and travel time in the water column
Temperature of the water column
Instrument typeCTD
Instrument nameIdronaut Ocean Seven 304 CTD
Platform typefixed benthic node
Platform nameGalway Bay Cable Observatory

Process information

Submitting organisationMarine Institute
Submission identifier (UUID)e31422ea-2f89-4fce-a4a5-a5e3e0dfc6cf
Date of dataset creation2018-03-01
Date of dataset revision2018-03-01
Date of metadata creation2018-05-03
Date of metadata latest revision2018-05-14
Date of publishing2018-05-17
Processing data centreMarine Institute
Summary record-ID154