PROJECT REPORT

Department of Fisheries and Oceans.\
Science Branch, Pacific Region

To: Regional Science Director Final: 

1\. Project No.: 2001-06 2. Dates: Feb 5 to 22, 2001

3\. Project Name: Line P -- Haida Eddy

4\. Area(s) of Operation: NE Pacific to Station Papa -- West of Queen
Charlotte Islands Hecate Strait -- Rivers Inlet

5\. Platform: John P Tully 6. Ship\'s Master: Mark Taylor

7\. Days Allocated: 21 8. Days of Operation: 18

9\. Days lost to weather: 1 d at least

10\. Days lost to other causes: 12 hours, fixing a Nomad buoy

11\. Suitability of platform: excellent

12\. Comments and recommendations: (safety, vessel operation, overtime,
etc.)

Everything went really well. There were no major problems with the
winches (just a little bit of surging) or with the seawater pump. The
engineers were very helpful in making the pump meet our requirements.

The sending and receiving of email should be done at different times
than 0700 and 1900. Since emails are mainly work related, they should be
exchanged at around 0930 and 1500 so that the people they are intended
to are in the office and can reply with the expected information.

13\. Primary Institute: OSAP Division at IOS, DFO

14\. Associate Institute(s): Canadian Wildlife Service

15\. Chief Scientist / Affiliation: Marie Robert, DFO

16\. Science Staff / Affiliation:

+-----------------------------------+-----------------------------------+
| Doug Anderson, IOS                | Michael Henry, UBC contractor     |
+-----------------------------------+-----------------------------------+
| Melissa Chierici, IOS post-doc    | Hugh Maclean, UBC contractor      |
+-----------------------------------+-----------------------------------+
| Keith Johnson, IOS                | ####                              |
+-----------------------------------+-----------------------------------+
| Wendy Richardson, IOS             | Michael Bentley, CWS contractor   |
+-----------------------------------+-----------------------------------+
| Nes Sutherland, IOS               |                                   |
+-----------------------------------+-----------------------------------+
| Tim Soutar, IOS                   |                                   |
+-----------------------------------+-----------------------------------+

17\. Cruise / Project Objectives: (attach narrative if required).

  ------------------ ----------------------------------------------------
  Objective          Comments

  Line P CTD survey  26 of 27 stations completed. Bad weather meant we
                     totally skipped P15, and didn't get the water
                     samples at P16.

  \"Old Eddy\"       7 CTD stations to 2000 m through eddy, 2 including
  survey             water sampling and bongo tows

  \"New Eddy\"       2 CTD stations to the bottom to sample forming eddy,
  survey             complete with water sampling and net tows

  Rivers Inlet       9 CTD stations completed (all the stations), 2
  survey             including water sampling
  ------------------ ----------------------------------------------------

18\. Cruise / Project Results: (attach narrative if required).

The cruise was very successful. Despite slowing us down on some days and
making us skip a station, the weather was quite good. The data we have
collected show an interesting pool of cold water right below the mixed
layer. The mixed layer seemed to consistently be around 105 m deep.

Biological and iron sampling will provide an assessment of plankton
standing stocks, iron concentrations and growth rates of phytoplankton
and bacteria when samples are analyzed.

The data collected in the Haida Eddy show that despite being a year old
and having traveled over 150 nautical miles, the Eddy has intensified.
The isotherms dip even deeper than when the Eddy was forming in February
2000. The chemical and biological data, once analyzed, will help
determine how coastal the properties of the Eddy still are. The ADCP
data will help determine the real extent of the Eddy.

A new Eddy seems to be forming on the west coast of the Queen Charlotte
Islands. The two stations we performed in relation to this new Eddy,
when compared to historical data as well as with the stations done in
last year\'s \"new\" eddy, will tell us more about that formation
process.

See Appendix for more details.

19\. Equipment:

Thermosalinograph, ADCP, pCO~2~, Met package & solar radiation all
collected continuously (when the seawater pump was working). Onboard
analyses of salinity, oxygen, nutrients, and iron were completed.

Winches: 1. Swann 329 #1483 Wire Type: CTD, 4710 m

Wire Condition: one strand was broken before we even left the dock. The
greasy condition of the wire is even worse than last year. There is now
a liquid grease over the old black grease which spreads more than
before. The Niskin bottles on the rosette are covered with it and we
therefore cannot take any DOC samples from the rosette.

# Condition of winch at acceptance on vessel: good

Repairs/modifications whilst aboard: wire reterminated after station
P20. The broken strand was getting worse

Recommended repairs/modifications: rethink wire greasing procedures

## Equipment deployed: CTD and rosette

### No. of casts. 47 Average depth: 1500 m

Winches: 2. Swann 420 #1432 Wire Type: Bongo wire 4200 m

Wire Condition: good.

# Condition of winch at acceptance on vessel: good. We didn\'t have a winch counter for that winch. 

Repairs/modifications whilst aboard: none

Recommended repairs/modifications: none

## Equipment deployed: Bongos.

### No. of casts. 9 Average depth: 150 m

Winches: 3. Swann 310 #1082 Wire Type: Kevlar

Wire Condition: n/a

# Condition of winch at acceptance on vessel: good

Repairs/modifications whilst aboard: none

Recommended repairs/modifications: none

## Equipment deployed: go-flos

### No. of casts. 20 Average depth: 500 m

21\. Comments and Recommendations: (detail any issues not covered
above).

Thanks again to Captain Taylor and crew for their support to a
successful survey in the Gulf of Alaska. We are very appreciative of how
Captain Taylor provided the extra speed needed to get to some station on
time in order to sample from the Zodiac. Also, a very special thanks for
going all the way to the head of Rivers Inlet into Moses Inlet even
though no tide information was available through Nelson Narrows. Finally
I want to mention that it was very good to be actively included in the
fire/boat drill. The scientists had to perform some duties which is very
rare in those drills. Thanks also to the ROC for making the Tully
available for loading before our scheduled time.

22\. Submitted by: Marie Robert Date: February 26, 2001

######## Appendix

###### Hydrographic surveys

**Marie Robert and watch keepers**

We have been able to complete 25 of the 27 stations composing Line P.
Because of weather we had to skip station P15 and use only the CTD
instead of the rosette at station P16, therefore missing the water
sampling.

During the sampling of the Haida Eddy-2000 we had to interrupt our work
to go fix the anemometer of a NOMAD buoy. We were sailing right pass the
buoy during our survey, but we received the information much later in
the day. We had to sail back for 30 miles, wait for sunrise, then cover
50 miles to go to our next station. We ended up losing about 12 hours
and the good weather.

#####  After completing the survey of the Haida Eddy-2000 we went to explore the formation of a new Haida Eddy-2001. We did one cast in what seems to be the heart of that new eddy according to the altimetry data. We did a second cast south of Cape St. James, where the Hecate Strait waters flow westward to fuel the eddies. 

The final portion of the cruise was the survey of Rivers Inlet. Since
there are not many data for this inlet during the winter time, it was
really nice to have enough time to complete that survey. Once again,
special thanks to Captain Taylor who sent the 733 to Nelson Narrows to
perform a little exploration since no tide data were available, and then
took the Tully through the Narrows in order to get to the last 2
stations in Moses Inlet.

![](media/image1.wmf)Figure 1. Cruise track of John P Tully, Feb 5 to
22, 1999

######### Eddy Results

![](media/image2.wmf){width="4.6in" height="6.108333333333333in"}

######### CRUISE SUB-REPORT

**EXPEDITION No. 2001-06**

**IRON III STUDY SUMMERY**

**Keith Johnson & Nes Sutherland**

Sea water samples were collected along line P for analysis of iron III
onboard ship using a chemiluminescent technique. Bottle samples were
collected using 30 liter Go-Flo's new 12 litre go-flo's, or 10 liter
Go-flo bottles (P04 only) on 1025 meters of kevlar line spliced to the
hydro wire on the hydro winch. A layer of plastic separated the kevlar
from the steel line. A plastic (UHMW polyethylene) spooler wheel and
rollers were used to feed out the kevlar to an electro polished
stainless steel and brass block assembly. Lead weights (UBC's) encased
in fiberglass were attached to the end of the kevlar and separated from
the sampler by 15 to 20 meters. Shallow samples 10, 25, and 40 meters
were also collected using an air driven Teflon pump and Teflon sampling
tube with handling performed in an Eaci clean hood in the wet lab.
Surface samples were collected by hand using a Zodiac to get away from
the ship.

The 30L Go-flo samplers were sampled on deck using boxes with sides and
roof to minimize air disturbances. The 12L and 10L Go-flo's were mounted
in the wet lab for the first time and subsampled there. This allowed for
on-line filtration as the bottles were mounted higher than when mounted
in their box in the breeze way. Two 250 ml and two 125 ml pre cleaned
CPE bottles were filled with sea water after rinsing three times with
the sample. Two were unfiltered (one of each size), and two were
filtered either through a 90mm o.2 micron Durapore membrane filter or
through a cartridge filter (Opticap 0.22u) Pump samples were collected
using a the EACI clean hood mounted in the wet lab. Pump samples were
collected as for Go-Flo samplers two unfiltered one through 0.2 micron.
Samples were buffered to pH 3.2 using formic acid - ammonium formate
buffer solution as soon as possible. Samples were analyzed onboard with
a duplicates (125 ml bottles) from each depth acidified with 1000
microliters of 1:1hydrochoric acid for returning to the shore laboratory
for further analysis.

Outbound profiles down to 1000 meters were collected at stations P4,
P12, P16, P20, and P26. Sample depths were normally 10, 25, 40, 75, 100,
200, 300, 400, 600, 800, and 1000 meters. Surface samples using a zodiac
were also collected at all stations except P16 due to rough weather
conditions. Bulk carboy sampling for ultra low iron stock sea water was
carried at the 10 meter depth at station P26. Pumped sea water was also
collected UBC at P16 for rinsing cubitainers, and P20 for filling
cubitainers for Mike Henry's experiment. Sampling at P26 was doubled to
enable us to send 4 bottles from each depth to Jun Nishioka at CRIEPI.

Inbound profiles were collected at outside and inside the 2000 Eddy to
600 meters (10 depths, no Zodiac) as well as the new eddy (ME) and
potential source waters ME2 (only 4depths)

Some of the preliminary results include:

1\) High iron results were obtained in the intermediate waters of the
old eddy compared to outside. The new eddy had very high iron with a
maximum at 150 meters.

2).Filtration in the wet lab using the clean hood and from wall mounted
Go-flo's worked well and provided a clean area for preparing sampling
bottles and filters for Go-Flo\'s. The new 30 L and two 12L Go-flo's
seemed to give uncontaminated results with only onboard cleaning of
Extran and acidified seawater as they just arrived on the Monday we were
loading.

There was some major contamination problems with the Opticap cartridge
filter. The prolonged cleaning had digested the o-rings which probably
resulted in the contamination.

3\) Some high iron levels were detected in the 1000 meter samples from
P12, P16 and P20 which may be real or contamination from 12L Go-flo's.
After analysis of stored samples we will have a better idea if there is
some intrusion of coastal iron in this deep water.

**pH Summary 2001-06**

**February 2001**

**Line P, 2000 Eddy and New ME eddy**

**Melissa Chierici**.

Both shipboard analysis by spectrophotometric technique and insitu
analysis using Sea-bird pH probes were carried out at selected stations.
The two probes were to be calibrated using the spectrophotometric
results. At P04 both probes were installed on the CTD and run in the
userpoly mode (raw voltage). However only one probe was working #180293.
The newer probe gave no signal and could not be repaired at sea. The
probe was calibrated with the spec data and mounted again on the CTD for
the productivity cast at P26. Other cast were too deep for the probe.
The probe was also used at the eddy stations and rivers inlet.

pH was measured spectrophotometrically at the following stations; P4,
P26 (two casts), ED1, ED4, ME1 and ME2. There was a clear difference
between the inner Eddy station and the outer. In total 121 samples.

![](media/image4.wmf){width="5.503472222222222in"
height="3.7694444444444444in"}

From this figure we can see that the ED4 which is the inside station in
the old eddy (Haida 2000) It shows very similar features with the more
coastal station P4, except for in the surface waters.