{"id":8738,"date":"2018-10-15T14:55:51","date_gmt":"2018-10-15T13:55:51","guid":{"rendered":"https:\/\/blogs.gov.scot\/marine-scotland\/?p=8738"},"modified":"2018-10-15T14:55:51","modified_gmt":"2018-10-15T13:55:51","slug":"water-sampling-for-long-term-monitoring","status":"publish","type":"post","link":"https:\/\/blogs.gov.scot\/marine-scotland\/2018\/10\/15\/water-sampling-for-long-term-monitoring\/","title":{"rendered":"Water Sampling for Long-Term Monitoring"},"content":{"rendered":"

Survey<\/strong>: MRV Scotia 1418S<\/p>\n

Duration<\/strong>: 5-15 October 2018<\/p>\n

Procedure<\/strong>:<\/h4>\n

Scotia will make her way to the eastern start of the Nolso \u2013 Flugga (NOL) section and start collecting long term monitoring samples and taking CTD profiles. On a previous trip – the 0618S survey – a mooring in an AL500 frame also failed to surface and communication with this lost mooring will be attempted.<\/p>\n

After the NOL section, Scotia will head to the western (Faroe) side of the FIM section to carry out standard CTD and water sampling along the line. Scotia will then sail back to the JONSIS line to conduct a fine scale CTD survey around the area of the AECO mooring.<\/p>\n

Once that work is completed and if time allows, Scotia will carry out additional work (listed in the survey objectives) along the JONSIS line, in the Moray Firth and\/or Aberdeen Bay, prior to her return.<\/p>\n

Scientific Procedures:<\/strong><\/h4>\n

It is expected that deployments of hydrographic equipment will be carried out with the CTD crane whilst the vessel is on station. The plankton crane will be used for the deployment of ADCP moorings in trawl-resistant frames (AL200 and AL500) and short single-string moorings. Longer single-string ADCP mooring deployments will be done from the trawl deck.<\/p>\n

Two container laboratories will be required (one for water filtering and a dry container for communications with sampling equipment). Chlorophyll samples will be stored frozen in the freezer in the Fish House. Nutrient samples will be stored frozen in an empty freezer on the lower container deck.<\/p>\n

Objectives<\/strong>:<\/h4>\n
    \n
  1. Perform hydrographic sampling along the ALTERECO monitoring section in the northern North Sea, which will be sampled in all MSS oceanographic surveys in 2018.<\/li>\n
  2. Perform hydrographic sampling along the JONSIS long term monitoring section in the northern North Sea.<\/li>\n
  3. Recover, download and re-deploy an ADCP mooring deployed in a trawl-proof frame on the JONSIS section (the \u201cAlterEco mooring\u201d, AECO).<\/li>\n
  4. Recover, download and re-deploy one ADCP mooring at a position on Fair Isle \u2013 Munken (FIM) section.<\/li>\n
  5. Perform hydrographic sampling along the long term monitoring Faroe-Shetland Channel Nolso \u2013 Flugga (NOL) section.<\/li>\n
  6. Try to establish communication with previously lost mooring (AL-500) on NOL, and potentially attempt recovery.<\/li>\n
  7. Perform hydrographic sampling along the long-term monitoring Faroe-Shetland Channel Fair Isle \u2013 Munken (FIM) section.<\/li>\n
  8. Take water samples for long term storage on Fair Isle \u2013 Munken or Nolso \u2013 Flugga section stations.<\/li>\n
  9. Perform fine scale VMADCP\/CTD survey work on the JONSIS line (around 59\u00b0 17′ N, 001\u00b0 15′ W).<\/li>\n
  10. If weather\/time permits perform a short-term deployment of an ADCP in AL200 frame.<\/li>\n
  11. If weather\/time permits, perform VMADCP\/CTD survey work in the Moray Firth and\/or Aberdeen Bay.<\/li>\n
  12. Run the thermosalinograph throughout the survey.<\/li>\n
  13. Run the VMADCP on all the standard sections.<\/li>\n<\/ol>\n

    Gear<\/strong>:<\/h4>\n