Marine

MRV Alba na Mara: survey 1015A programme

July 9, 2015 by Marine Directorate Communications 1 Comment | Category Compliance, Marine Directorate general, Marine Directorate Science, Research Vessel Surveys

Duration: 03-19 July 2015
Gear: Surface and subsurface PAM moorings
Objectives:
To retrieve and re-deploy a series of moorings comprising either dhan buoys (nine surface marked moorings) or acoustic release systems (21 subsurface moorings) and the acoustic recording devices attached to them (30 C-POD and ten SM2M) as part of the East Coast Marine Mammal Monitoring Programme (see Table 1 and Figure 1).

Procedure:
Loading of all equipment will be carried out on 30 June when the previous survey (0915A) returns to Fraserburgh. Alba na Mara will sail from Fraserburgh on the morning of 3 July and make for the first mooring position. The ultimate order in which the moorings are retrieved/deployed will be dictated by the weather forecast and the likely shelter that can be provided by the east coast. Accurate position records will be kept detailing where the moorings are eventually placed as this may differ from the planned position.

Additional sampling equipment were attached to the moorings at the previous deployment, of these the temperature samplers will be replaced in situ and the biological samplers will be left in place.

Moorings that cannot be found or retrieved will be replaced with the same type of mooring.

Once all the moorings have been deployed Alba na Mara will return to Fraserburgh by 19 July to unload the remaining gear and allow the scientific crew to disembark and return to Aberdeen.

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Table 1: ID, name and geographic position of all 30 moorings deployed in April 2015 during survey 0515A. Surface marked positions are highlighted in grey.

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Figure 1: Positions of all 30 moorings, with depth in metres and type of mooring to be firstly retrieved, then re-deployed or replaced during cruise 1015A.

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• MRV Alba na Mara: Survey 1715A Programme says:

  7 November 2015 at 1:16 am

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