Cruise inventory

RV Marisa MR07/11

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Marisa (74MQ)
Cruise identifierMR07/11
Cruise period2011-11-08 — 2011-11-10
Port of departureLiverpool, United Kingdom
Port of returnLiverpool, United Kingdom
ObjectivesTwo moorings are maintained at the Mersey Bar Station (MBS). Instruments are mounted in a sea bed frame, and at 5 m below a spar buoy and along its mooring chain. Maintaining a long time series of observations will ultimately facilitate the determination of natural and anthropogenic variability within Liverpool Bay. The primary aim of the cruise is to recover and redeploy this

The second cruise objective is to undertake conductivity, temperature and depth (CTD) profiles at a number of stations surrounding the mooring site and along the mouth of the River Mersey. In addition to a SeaBird CTD, the CTD's frame also included three Niskin bottles with firing at pre-programmed depths, a WET Labs ac-s instrument with Triplet and a DH4 logger. Water samples were obtained in Niskin bottles for determining concentrations of: suspended particulate matter (SPM), chlorophyll-a and chromophoric or coloured dissolved organic matter (CDOM) and nutrients near the sea bed (or 20 m), and near-surface (2 m).

An additional objective is to complete a six-hour station of half-hourly CTD profiles. Water samples were obtained during on-the-hour profiles for determining concentrations of: suspended particulate matter (SPM), chlorophyll-a, CDOM and nutrients near the sea bed (or 20 m), 10 m below the sea surface, and near-surface (2 m).
Chief scientistAndrew Lane (National Oceanography Centre, Liverpool), Matthew R Palmer (National Oceanography Centre, Liverpool)
ProjectLiverpool Bay Observatory
Cruise reportRV Marisa MR07/11 cruise report marisa07_11.pdf — access key 'C' (0.42 MB) 
Ocean/sea areas 
GeneralIrish Sea and St. George's Channel
SpecificLiverpool Bay, Eastern Irish Sea
Track chartsRV Marisa MR07/11 cruise track — marisa07_11trk.pdf (0.42 MB) 
Data held at BODC 
Discrete samples 
10  CTD frame plus rosette samplerChlorophyll pigment concentrations in water bodies
Concentration of suspended particulate material in the water column
Phaeopigment concentrations in the water column