Scheduled Cruises in 2004

Summary of a cruise on margins research (POR.041)

Location and cruise identifier :   Nazare Canyon, NE. Atlantic

Research ship :   Andromeda

Principal Scientist/Investigator :   Dr. Joao Vitorino

Laboratory :   Instituto Hidrografico, Lisboa, PORTUGAL

Other investigators :   

E-mail contact for further information :   

Website :   EUROSTRATAFORM

Leg - 1

Starts :   April 2004
Ends :   April 2004
Duration :   3 Weeks

Equipment :   Hydrographic/SPM survey: Neil Brown MKIIIC CTD + nephelometer + Rosette sampler, vessel-mounted ADCP current profiler Short-term moorings: ADCPs with wave module, LISST sediment size sensor Other: Sidescan sonar, sub-bottom, Sparker Superficial grab sampler, gravity corer, vibrocorer Sub-surface pump + SPM filtering system.

Scientific objectives :    To invesitgate the Nazare Canyon dynamics, associated present day sedimentary processes and impacts on the circulation and sediment distribution on the N Portuguese continental margin by combining CTD/ADCP/SPM measurements and numerical models (MOCASSIM system). Also to investigate sedimentary structures in the continental shelf/slope near the canyon head using sidescan sonar, high resolution seismics and coring.

Leg - 2

Starts :   26th April 2004
Ends :   30th April 2004
Duration :   4 Days
Equipment :   Currentmeters, ADCP, LISST.

Scientific objectives :    Calibration and testing of equipment to be moored in the Nazare Canyon area. Short deployment (2 days) of moorings and CORSED platform in Setubal Bay area for testing and intercomparison of currentmeters, ADCP and LISST to be deployed later in the Nazare Canyon. .

Leg - 3

Starts :   13th May 2004
Ends :   14th May 2004
Duration :   2 Days

Scientific objectives :

1. Deployment of the two long-term moorings at the following positions along the Nazare Canyon axis:
   • Mooring A (bottom depth 3230m) Lat: 39 deg 30 min 3.919 sec North; Long: 9 deg 52 min 5.319 sec West
   • Mooring B (bottom depth 1600m) Lat: 39 deg 31 min 21.619 sec North; Long: 9 deg 32 min 48.292 sec West
2.  
3. Deployment of CORSED monitoring platform (for a short-term period of observations) at the following position over the shelf:
   • CORSED (bottom depth: 103m) Lat: 39 deg 28.250 min North, 9 deg 26.916 min West.
     
     The platform is equipped with:
     • 1 upward looking 300 KHz ADCP at 1 meters above the bottom
     • 1 downward looking 1200 KHz ADCP at 5 meters above the bottom
     • 1 LISST at 3 meters above the bottom
     • 1 RCM9 currentmeter (with nephelometer) at 5 meters above the bottom
     • 1 RCM9 currentmeter (with nephelometer) at 1 meter above the bottom

Leg - 4

Starts :   17th May 2004
Ends :   23rd May 2004
Duration :   1 Week

Scientific objectives :    Multidisciplinary cruise in the Nazare Canyon area. Data collected during the cruise includes:

• 104 CTD casts
• Water samples
• On-board ADCP
• Meteorological measurements

Leg - 5

Starts :   25 May 2004
Ends :   28th May 2004
Duration :   4 Days

Scientific objectives :   

1. Bottom sediment sampling of the Nazare Canyon area. 108 samples collected with Smith McIntyre.
2. Recovering of CORSED monitoring platform. First analysis of the data indicates that all equipment provided good data during the deployment period (14-28 May)

Leg - 6

Starts :   September 2004
Ends :   September 2004
Duration :   3 Weeks