Update
January 17-22, 1997

On Board the Polar Duke

© 1997 Ann Hawthorne

SUBJECT: SITREP AND OBSERVATIONS FROM R/V POLAR DUKE

GMT DATE: 17-18 January 1997

GMT TIME: 1600 0000 0400 1200
LAT: 64-07S 63-57S 63-43S 64-30S
LONG: 66-30W 66-50W 67-27W 66-02W
TEMPERATURE (C): -0.2 0.1 -1.3 0.5
AIR PRESSURE (MB): 1000 995 1007 1009
WIND SPEED (KN): 17-21 11-16 7-10 7-10
WIND DIRECTION: SW SW SW SW
CLOUDS (%): OVCST FOG FOG OVCST
SEA STATE (M): 1 1 1 1
SEA ICE: NONE  

FUEL ON BOARD (@ 0800): 450.5 M3

SHIP'S POSITION: Sediment trap site north of Hugo Island

REMARKS: The Polar Duke completed the 600 transect early this morning. This afternoon we did a BOPS cast and 2M net trawl over the Hugo Island sediment trap site. The ship is now proceeding to Arthur Harbor to run the 3.7km picket line which consists of bird observations and a bioacoustics profile. This will be followed by trawling during evening hours.

We were in radio and visual contact with a Japanese research vessel this morning engaged in geoseismic work.

Regards,
Al Hickey
R/V POLAR DUKE

 

SUBJECT: SITREP AND OBSERVATIONS FROM R/V POLAR DUKE

GMT DATE: 18-19 January 1997

GMT TIME: 1600 0000 1200
LAT: 64-35S 64-55S 64-49S
LONG: 65-40W 64-07W 64-02W
TEMPERATURE (C): 1.4 1.5 3.2
AIR PRESSURE (MB): 1009 1009 1002
WIND SPEED (KN): 7-10 CALM CALM
WIND DIRECTION: SW ---- ----
CLOUDS (%): OVSCT OVCST PCL
SEA STATE (M): 1 0.5 0.5
SEA ICE: SCATTERED BRASH AND SMALL FLOES ICE TOTAL (TENTHS)

SHIP'S POSITION: Palmer Basin

FUEL ON BOARD (@ 0800): 444.5 M3

REMARKS: The Polar Duke returned to Palmer Basin by late afternoon of the 18th to begin the 3.7km picket line which consists of continuous bioacoustic profiling to detect krill swarms, and associated avian observations from the bridge. Picket lines are radial arcs extending 3.7km and 10km out from a center (in this case the center being Palmer Station).

On the 19th, BOPS casts were performed at nearshore stations B-J. During this time two avian ecologists from S-013 deployed to Torgesen Island at 0430 LT to observe the times of departure of Adelie penguins to begin their feeding offshore. At 0630 LT, two Zodiacs were deployed from the ship to track the departing penguins and note their travel paths and diving patterns. Three ASA support personnel from Palmer Station and Dr. Polly Penhale, NSF representative, came aboard in the morning to observe operations and render technical advice on some troubled instrumentation.

Calm weather allowed penguin tracking to continue all day under ideal conditions.

Regards,
Al Hickey
R/V POLAR DUKE

 

SUBJECT: SITREP AND OBSERVATIONS FROM R/V POLAR DUKE

GMT DATE: 19-20 January 1997

GMT TIME: 1600 0000 0400 1200
LAT: 64-46S 64-48S 64-51S 64-51S
LONG: 64-08W 64-04W 63-54W 64-07W
TEMPERATURE (C): 1.8 1.7 1.9 3.2
AIR PRESSURE (MB): 1004 1000 1000 1000
WIND SPEED (KN): 4-6 22-27 22-27 7-10
WIND DIRECTION: SW ESE E E
CLOUDS (%): PCL OVCST RAIN OVCST
SEA STATE (M): 0.5 1 0.5 0.5
SEA ICE: SCATTERED BRASH AND SMALL FLOES. DISTANT LARGE BERGS  

SHIP'S POSITION: Palmer Basin

FUEL ON BOARD (@ 0800): 439.5 M3

REMARKS: The Polar Duke continues with inshore picket lines. Last night two humpbacks were observed lunge feeding close abeam for several minutes.

Regards,
Al Hickey
R/V POLAR DUKE

 

SUBJECT: SITREP AND OBSERVATIONS FROM R/V POLAR DUKE

GMT DATE: 20-21 January 1997

GMT TIME: 1600 0000 0400 1200
LAT: 64-50S 64-49S 64-52S 64-53S
LONG: 64-12W 63-58W 64-10W 64-10W
TEMPERATURE (C): 3.8 3.0 1.9 2.4
AIR PRESSURE (MB): 995 990 987 978
WIND SPEED (KN): 4-6 CALM 28-33 41-55
WIND DIRECTION: W ---- E E
CLOUDS (%): OVCST OVCST RAIN OVCST
SEA STATE (M): 0.5 0.5 1 1
SEA ICE: SCATTERED BERGS  

FUEL ON BOARD (@ 0800): 434.5 M3

SHIP'S POSITION: Palmer Basin

REMARKS: The Polar Duke is performing a high density grid today within the penguin foraging area. This consists of continuous avian observations and Bioacoustics profiling for krill detection. Included in this grid are several BOPS casts and XBT drops. Targeted trawls will be performed this evening which are intended to capture high densities of krill as determined from the Bioacoustics profile. This combination of krill density from Bioacoustics, targeted trawls and avian observations help create a picture of pengin foraging behavior.

Regards,
Al Hickey
R/V POLAR DUKE

 

SUBJECT: SITREP AND OBSERVATIONS FROM R/V POLAR DUKE

GMT DATE: 21-22 January 1997

GMT TIME: 1600 0000 0800
LAT: 64-57S 64-56S 64-46S
LONG: 64-13W 64-09W 64-04W
TEMPERATURE (C): 4.0 1.3 4.1
AIR PRESSURE (MB): 978 990 990 997
WIND SPEED (KN): 11-16 11-16 1-3
WIND DIRECTION: E W SE
CLOUDS (%): OVCST OVCST PCL
SEA STATE (M): 1 1 0
SEA ICE: NONE

FUEL ON BOARD (@ 0800): 429.5 M3

SHIP'S POSITION: Palmer Basin

REMARKS: The Polar Duke completed the high density grid in the penguin foraging area last evening. Targeted trawls were performed thereafter. Today the vessel is running two bioacoustic profiles from stations A-E (within Arthur Harbor and extending offshore). Two Zodiacs are tracking penguins as directed by avian ecologists who landed on Humble Island at 0230 LT this morning.

The Polar Duke will tie up at Palmer Station this afternoon at 1600 LT in preparation for the Live From Antarctica broadcast to be filmed and aired at 1800 GMT tomorrow.

Regards,
Al Hickey
R/V POLAR DUKE

 

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