FOCI Number: 6MF02
NOAA Ship Miller Freeman
Area of Operations: Coastal
Nancy B. Kachel, PMEL/FOCI
Nancy B. Kachel, PMEL
David G. Kachel, PMEL
Sigrid A. Salo, PMEL
Antonio Jenkins, PMEL
David Weisgarver, PMEL
Objectives of Cruise:
FOCI’s goal is
to understand the effects of abiotic and biotic
variability on ecosystems of the
The principle objective of this leg was to make a CTD/Chlorophyll/Nutrient survey of Portlock bank, then, as time permitted, survey the northern portion of Albatross Bank and Chiniak Trough (Fig. 1).
Summary of Operations:
Mooring Deployment 1
CTD Stations 103
Satellite drifters deployed 4
Chlorophyll samples ~600
Nutrient samples ~850
Summary of Cruise:
NOAA Ship Miller Freeman departed .
The SeaBird 911+ CTD was equipped with dual temperature and conductivity sensors as well as a WetStar Fluorometer and a Photosynthetically Active Radiation sensor (PAR). At each station, water samples were collected for analysis of chlorophyll and nutrients concentrations, in addition to a salinity sample for calibrating the CTD sensor. The chlorophyll samples were filtered through a 0.45-micron filter, frozen, and stored in a –80º C freezer. The nutrient samples collected in the top 50 m were also filtered though 0.45 micron filters as soon as they were collected. All samples were flash-frozen, then the nutrients were transferred to a –20º C freezer.
The hydrographic survey of Portlock Bank consisted of 5 lines: the outer portion of the Gore Point line (GP) on the western side of the bank, 2 lines (PBA and PBB) crossing over the center, another over the eastern portion (PBC), and finally a transect roughly from east to west (PX)(see Fig 1). One drifter was deployed at the center of the bank and another on the eastern side.
survey of Albatross Bank and Chiniak Trough began
with a transect along the middle part of Northern Albatross Bank from Stevenson
Trough on the northeast, continued along the bank, and then crossed over Chiniak Trough, on the southwest (NAB/ CBA). Two more lines
were then occupied across Chiniak Trough (CBA and
CBC), before the start of the final cross- shelf transect (AX) from the slope
of Northern Albatross Bank to near
At the end of the cruise we deployed a current meter mooring (02CB1B) in Chiniak Bay before coming into port at Kodiak, AK on Oct. 9, at 0800 local time.
Specifics of operations:
Specifics of the operation are presented in the event log in the appendix.
Fig 1 –CTD station 32-135 from
MF0211_Leg2. Transects are identified as: