R/V Revelle, Alford Cruise Cruise Plan, 7/28/2010shipsked.ucsd.edu/Schedules/2010/2010-RR-alford/CruisePlan_AlfordI...Matthew Alford Chief Scientist APL/UW

R/V Revelle, Alford Cruise Cruise Plan, 7/28/2010

This is an updated draft written now that the Graber cruise will not likely return early.

Overview

The following is the cruise plan for the Internal Waves in Straits Experiment (IWISE) pilot leg (29 at-seadays) of the IWISE/ITOP projects. Our goal is to understand internal waves in straits, so we will beworking between Taiwan and the Philippines (Figure 1). Our general plan is to deploy profiling mooringsfor the duration of the cruise, and to work around them with a series of 36-hour-long yo-yo CTD/loweredADCP stations while they profile. Taiwanese and Philippines clearances have been granted.

We plan to deploy a total of nine moorings at the locations shown, of which five (PIES 1-5) will berecovered at a later date by another ship. The other moorings will be recovered at the end of our cruise.

Between the deployment and the recovery, we’ll conduct 36-hour yo-yo CTD stations while holdingstation or drifting slowly at about 15 locations, some of which are shown with purple squares. Otherswill be determined during the cruise. Station locations are given in Table 1. See Table 2 for a strawmantimeline.

Our cruise is part of a larger block of time shared by the joint IWISE program (this cruise) and theITOP Typhoons program. If a strong typhoon comes along after Aug 20, we will return to port to allowthe ITOP group to conduct a three-week survey of the typhoon wake and then collect instruments (atotal of 21-42 days), in which case we would return afterwards to conduct the balance of our cruise. Inthat event, we would likely leave the moored assets in the water during that period and recover them inthe second portion of our cruise.

Table 1: IWISE Stations. Note all positions are approximate, and given in decimal degrees. Afterdeployment, please maintain 0.25 nm radius from MP-N and MP-S.

Station Lat, Lon Depth CommentsMP-N 20.6N, 121.3E 3663 m 135 nm to KS (13.5 h)MP-S 19.85N, 120.55E 3652 m 169 nm to KS (17 h); 61 nm to MP-N (6 h)A-1 20.6N, 121.65E 1200 mP-1 20.50N,121.30E 3679 mP-2 21.00N, 121.30E 3630 mP-3 20.00N, 121.30E 3560 mP-4 20.5N, 122.50E 3262 mP-5 20.5N, 119.00E 2730 mP-6 20.6N, 120.6E

CTD-1 20.6N, 120.8E CTD stations locations nominalCTD-2 20.6N, 121ECTD-3 20.6N, 121.5ECTD-4 19.5N, 121.2ECTD-5 19.5N, 121.4ECTD-6 19.5N, 121.6E

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Loadout

Timing

The Graber cruise is scheduled to return August 12 at 0800. He will return earlier if possible, but givenhis late departure this seems unlikely. Since the Graber group has indicated they will be done offloadingthe same day they arrive, we plan on starting loading at 0800 8/13. We will stop by the ship when wearrive midmorning on 8/12 to discuss plans. Though we won’t plan on it, we will be ready to beginloading in the afternoon if they finish early with their offload.

First, we will unload all gear from our containers onto the dock (for weight reasons and since theywill need to be reorganized before loading onto the ship). We will then need a series of crane picks to getthe empty containers on board and all gear spotted. Tasks we’ll need help with from the crew are: 1)rig-up block hung from the A-frame, 2) 3-phase 220V power for our spooler in the staging bay, 3) geartied down on deck, 4) stopper cleats sited on deck at locations TBD.

We plan to pull a long day and depart at 1600 on 8/14 if all is ready.If we leave on this day and are not interrupted, we will return at 0800 9/12 (29 day cruise).To minimize overall mob and demob time, loadout will be shared between our cruise and the two

subsequent ITOP cruises. Hence, we will load gear for our own cruise as well as the Rockland scientificprofiler and underway CTD to be used by the ITOP group. It is possible we will also use these instrumentsa bit during our cruise, as described below. In addition, ITOP gliders will be loaded, but not used duringour cruise.

As a final note, Craig Lee and Luc Rainville will be present to oversee their portions of the loadoutand to discuss overall coordination with the Master and crew.

Deck Plan

The deck plan is shown in Figure 2. We plan to situate the microstructure and underway CTD systemsto port and starboard aft quarters, respectively.

For the mooring operations, the mooring wire will be run from the SIO TSE mooring winch thougha rig-up block hanging from the A-frame to starboard of the trawl block. The mooring winch will besituated centerline. We will bring a wire spooler, which requires 3-phase 220V AC power, to load andunload wire to/from the mooring winch. We like to use an air tugger mounted on the A-frame stanchionto operate a flying block hanging from the rig-up block. We plan to use the trawl wire to deploy theanchors, and either the trawl wire or the the port kunckleboom crane to launch the floats at the startof each profiling mooring deployment. Floats will be staged along the port rail, while anchors will beplaced inboard of the port A-frame stanchion. Please refer to the overboarding plan for the moorings,given in a separate document, for deck and rigging details.

The two 20’ vans on the main deck will house glass floats for our moorings and deck storage. Nearthe end of our cruise we will attempt to fully load our gear into them, allowing for a quick turnaroundbetween our cruise and the next. A third 20’ van (empty during our cruise) will be stored on the O1deck during our cruise, and moved to the main deck for use during the ITOP cruises.

If conditions permit and time allows, we will attempt to move all of our gear into the vans prior tothe end of our cruise. Then, dockside after our cruise, our demob will consist simply of offloading ourtwo vans and moving the Lee van to the main deck.

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Gear

Profiling moorings

We will deploy two profiling moorings in about 3500 m of water (Figure 1, stars), which consist of a“crawler” making repeated traverses of a taut vertical wire with two subsurface floats (one steel, onesyntactic foam) for flotation. These are anchor last deployments. The detailed overboarding plan forthese moorings was given to the restech in a separate document. Mooring diagrams for each are givenin Figures 3 and 4.

Inverted Echo Sounder with Pressure (PIES) moorings

Six PIES moorings (Figure 5 will be deployed at the locations shown (Figure 1, red circles). These arevery simple deployments. We will simply lower them over the side to the waterline and release themwith a mechanical release. They then sink to the bottom, which takes about an hour.

PIES moorings P1-5 will be deployed on our cruise, and recovered on another cruise. P6 will bedeployed and recovered on our cruise. P1 will be deployed at A1 for the duration of our cruise, and thenrecovered, reprogrammed and redeployed at P-1.

For these and all our acoustic commands sent to range on and release the moorings, we will bringpigtails that allow us to drive the ship’s 12-KHz transducer with our decksets. This has worked well forus in the past.

Acoustic Doppler Current Profiler (ADCP) mooring

Mooring A-1 is a short mooring consisting of an ADCP housed in a syntactic sphere about 20 m abovethe bottom. The mooring will also be deployed anchor last in about 1200 m of water (Figure 1, yellowcircle). The mooring diagram is given in Figure 6. As noted above, the PIES for P-1 will be deployedseveral hundred meters from A-1 during our cruise.

CTD/lowered ADCP stations

Between the mooring deployments and recoveries we plan to conduct about 15 36-hour time series at thestations shown in Figure 1, as well as others to be determined based on the results of these initial ones.We may try to hold station for some of these, but we expect very strong currents (strong tides and theKuroshio current system) and so may find better wire angles by drifting slowly.

The CTD will be fitted with a lowered ADCP system. We plan on using the ship’s brackets (therestech is already aware of this) and upward and downward 300-KHz workhorse ADCP’s and a batterypack to the CTD frame. We will also possibly attach a vane to allow special microstructure sensors onthe package to face the flow past the cage. Jonathan Nash is discussing this with the restech.

Rockland Scientific microstructure profiler

This is a loosely tethered instrument typically deployed from the stern with a small winch while steamingslowly (1-2 knot). We may substitute this instrument for some of the CTD/LADCP profiles. It consistsof a hydraulic winch (700 lbs; 32 x 40”). This will be run off its own hydraulic power pack (30 x 34”, 220lbs). The system requires 208VAC, 3 phase. The profiler itself (100 lbs) is deployed from the stern withno line tension through a small line puller (24” x 24”), and recovered via the A-frame. Initial loadout

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will involve simply staging the three boxes for the winch, powerpack and line puller out of the way ondeck; if we use it during our cruise setup only requires 2-3 hours.

Underway CTD

The OceanScience underway CTD system is designed to be deployed behind the ship while steamingat 8-12 knots. It is primarily for use by the ITOP program. It will be setup and operated from thestarboard aft quarter.

Timeline

The possibility of being interrupted makes doing a timeline very difficult. In addition, we are tied tothe phase of the tides which will ultimately determine which CTD stations will be done at which times.However, we will certainly want to deploy moorings MP-N, MP-S, PIES-6 and ADCP-1 as soon aspossible, and pick them up as late as possible. One strawman schedule assuming we leave on August 14and are not interrupted is given in Table 2.

Table 2: Draft IWISE Timetable, assuming 29 at-sea days and no interruptions. All transit times areestimated assuming 10 kt.

Day Time What Comments

0 1600 depart Kaohsiung, make for MP-N (135 nm; 13.5h) Take XBT as soon as deep water reached for Multibeam cal1 0600 arrive MP-N Multibeam on; finalize site/depth, choose makeup pieces1 0800 begin deployment should take 3-4 h; 5 hours allotted for first one1 1300 complete deployment, steam to A-1 (27 nm; 2.5 h)1 1600 Deploy A-11 1900 Complete A-1deployment, steam to P-6 4-hour transit1 2300 Arrive P-6, deploy (1 hour)2 0000 Depart for MP-S 4 hour transit2 0400 Arrive MP-S Multibeam survey, finalize site/depth, choose makeup pieces2 0600 Begin deployment, MP-S 6 hours allotted2 1200 Complete MP-S deployment

2-26 LADCP/CTD stations 24 days ≈ 16 36-hour stations.PIES 1-5 deployments at convenient times during CTD work

26 1700 recover MP-S release with plenty of light left; recover in evening27 0000 finish; steam to MP-N (recover P-6 en route)27 0600 recover MP-N27 1200 finish; steam to A-127 1430 recover A-127 1600 begin 24-hour weather/contingency day28 1600 leave MP-N for KS (13.5 h plus 2.5 h for tie-up, etc)29 0800 arrive Kaohsiung

What if we are interrupted?

Craig Lee, Luc Rainville and I discussed the timeline for a typical typhoon that might interrupt us. TheITOP group might get the first “wind” of a possibility of a targetable typhoon on day 0. By day 2 theywould have a good sense of whether it was going to be a typhoon they might want to target, and on day3 they would make the decision. Their gear would be air dropped 24 hours later, basically at the sametime that the group got on airplanes for Taiwan. 24 hours after that (day 5), the ship would need to betied up in Kaohsiung. Since the flights all arrive in the morning, 0800 would be enough time, meaningleaving 2000 the night before from the MP1 site.

So, we’d need to leave our work area approximately 48-72 hours after receiving certain recall, butwould receive a “typhoon possible” warning about 48 hours before this. In the event of a recall noticeafter about day 18-20 or so of our 29 day cruise, we’d want to work long hours to recover as much ofour gear as possible, since we would likely not return with our full contingent for a second leg (the short

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time remaining would not justify the expense and hassle). If we were interrupted before that, we wouldlikely leave the gear in the water for recovery on the second leg.

We hope to further discuss various scenarios with the Master while all of us are in Taiwan.

Tides

Figure 8 shows tides during our cruise.

Personnel

Science party (17 including STS personnel) and affiliations are as follows listed in Table 3.

Table 3: Science Personnel.

Who Role Inst.Matthew Alford Chief Scientist APL/UWAndy Pickering Grad Student APL/UW

Zoe Parsons Technician APL/UWMike Carpenter Engineer APL/UWJohn Mickett Oceanographer APL/UW

Jonathan Nash PI OSUHarper Simmons PI UAF

John Pender Technician UAFSteve Lambert Technician UAFJen MacKinnon PI SIOTamara Beitzel Grad Student SIORuth Musgrave Grad Student SIO

Ke-Hsien Fu student NSYSUChung-Wei Lu student NSYSU

Tsung-Tse Chen Customs/Compliance Observer Taiwanese NavyMary Huey Computer Tech SIO

Josh Manger Restech SIO

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Figure 1: Broad view of our work area. Colors represent generation of semidiurnal internal tides; arrowsrepresent their energy flux. Moorings and CTD/lowered ADCP stations are shown. The location ofPIES 5 is (20.5N, 119E) - slightly west of the map domain.

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4 4 4 4

45 45 45 48 48

air tugger on a-frame

PIES STANDS

spooler

TSE mooring winch

20-ft container

20-ft container

wire wire cage cage cage

MooringGearBox

FLOATS

ANCHORS

SPOOLS + CAGESUnderway CTD

Microstructure winch

Figure 2: Deck plan.

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(3) 5/8" shackle (1.98kg)(2) 3 links LL chain (1.4kg)

Drop link chain (2.0kg)5/8" shackle & 5" ring (1.41kg)

(1) 3/4" shackle (xkg)

(1) 3/4" shackle (xkg)(1) 5/8" sling link (.41kg)(1) 5/8" shackle (.66kg)

3.0m

13.4m

15.0m

16.5m

3580.0m

IWISE MP-N3596.0m Top of float (60m depth)

3578.0m

3582.0m

MP stopper

22.0m (1) 5/8" sling link (.41kg)(6) 1/2" shackle (1.86kg)

1632 kg anchor plus Danforth (1420 kg in water)

(1) 5/8" shackles (0.66kg)(1) 1/2” shackle (0.31kg)

(1) 1/2" shackle (0.31kg)0.5m x 1/2" 316 chain (1.65kg)(2) 1/2" 316 shackle (0.62kg)(1) 5/8" 316 shackle (.66kg)

4 wheel

Lat: Long:Date: Time: Hdg / Spd:

Event Log / Notes:

Target: Depth:

Actual: Depth:

Start Deploy: Lat:Time: Long:Wind Dir / Spd:Date:

(10) Benthos model 2040-17V glass floats (25.4 kg buoy. ea.)mounted in pairs on ½" long link chain (1m; 2.76 kg)

Drop Anchor:

48" Steel Float 585 kg buoyancy

3593.0m

3595.0m

(1) 1/2" shackle (0.31kg)(1) 5/8" sling link (.41kg)(1) 5/8" shackle (0.66kg)

Benthos model 865 double acoustic release (25 kg each)

Serial#: Enable:

Serial#:

Release:

RX(khz): TX(khz):

Enable: Release:

RX(khz): TX(khz):

Deploy Time:

Deploy Time:

Arm / Test:

Arm / Test:

xx°-xx.xxx'N xxx°-xx.xxx'E 3656m

1/2” Long link chain (2m; 5.52kg)

3/4” dia. Nylon line (10m; 0.22kg)

1/2” Long link chain (1.5m; 4.14kg)


MP stopper (Depth 78m)

0.393" PP jacket cortland line (1509m; 46.9kg – 1500m cut)

Deploy Time:

5/16" 3x19 PP jacket wire rope (10m; 3.25kg)

ADCP model RDI 75Khz Long Ranger w/press. (Depth 76m)Start Time:

Deploy Time: Pinging?

45" Syntactic Foam Float 300 kg buoyancy (MA)

Moored Profiler (s/n 103) w/chipod

MP Set-up:MP Start Time/Date:

Profile Range:

Deploy Time: Line out:

Serial#:

MP stopper (Depth 1585m) Deploy Time:

10

1010

10

(1) 5/8" shackle (.41kg)(1) 5/8" sling link (.41kg)(1) 1/2" shackle (0.31kg)

0.5m x 1/2" 316 chain (1.65kg)(2) 1/2" 316 shackle (0.62kg)(1) 5/8" 316 shackle (.66kg)

2050.0m

(1) 5/8" shackle (.66kg)(1) 5/8" sling link (.41kg)(1) 1/2” shackle (.31kg)

1032.0m

ARGOS ID# Beep?

ARGOS On Time:Flasher On Time:

Email?

Flash?

ARGOS Beacon O.M.L. model 265 / Flasher S01-500

SBE 37 MicroCat (Depth 73m; 2.3 kg)Serial#:__________ Start time:___________________

(1) 5/8" shackles (.66kg)3 ton swivel (3.32kg)

(1) 5/8" sling link (.41kg)(1) 1/2" shackle (0.31kg)

3579.0m

ADCP model RDI 300Khz Workhorse w/press. (Depth 1606m)Start Time:

Deploy Time: Pinging? Cover?Serial#:

Start time:

SBE39 Temp. ext. w/press.; Att. to rel. (Depth 3643m; 0.70 kg)Serial#:_______ Deploy Time:______ Logging?_______




Chipod – OSU deep (Depth 1596m; 1.0kg)Deploy Time:Serial#:

Chipod – OSU shallow (Depth 69m; 1.0kg)Deploy Time:Serial#:



3/8" aramid line - Harper (1010m; 10.7kg – 1000m cut length)

3/8" aramid line - Harper (1010m; 10.4kg – 1000m cut length)DVS – RDI deep (depth 2621m; 1.0kg)

Serial#: Deploy Time:



1037.0m


2070.0m

(1) 5/8" sling link (.66kg)(2) 1/2" shackle (.62kg)2048.0m

MP stopper2071.0m

(1) 5/8" shackle (.66kg)(1) 5/8" sling link (.41kg)3583.0m

(1) 5/8" 316 shackle (.66kg)0.5m x 1/2" 316 chain (1.65kg)(2) 1/2" 316 shackle (0.62kg)

(1) 1/2" shackle (0.31kg)

(4) 1/2" shackle (1.24kg)

Figure 3: Mooring diagram for MP-N.

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Drop link chain (2.0kg)5/8" shackle & 5" ring (1.41kg)

(1) 3/4" shackle (xkg)

(1) 3/4" shackle (xkg)(1) 5/8" sling link (.41kg)(1) 5/8" shackle (.66kg)

3.0m

13.4m

15.0m

16.5m

3528.5m

IWISE MP-S3539.0m Top of float (60m depth)

3527.0m

3530.0m

MP stopper

21.0m (1) 5/8" sling link (.41kg)(6) 1/2" shackle (1.86kg)


(1) 5/8" shackles (0.66kg)(1) 1/2” shackle (0.31kg)

(1) 1/2" shackle (0.31kg)0.5m x 1/2" 316 chain (1.65kg)(2) 1/2" 316 shackle (0.62kg)(1) 5/8" 316 shackle (.66kg)

4 wheel


Event Log / Notes:

Target: Depth:

Actual: Depth:



Drop Anchor:

48" Steel Float 585 kg buoyancy

3536.0m

3538.0m

(1) 1/2" shackle (0.31kg)(1) 5/8" sling link (.41kg)(1) 5/8" shackle (0.66kg)

Benthos model 865 double acoustic release (25 kg each)

Serial#: Enable:

Serial#:

Release:

RX(khz): TX(khz):

Enable: Release:

RX(khz): TX(khz):

Deploy Time:

Deploy Time:

Arm / Test:

Arm / Test:

xx°-xx.xxx'N xxx°-xx.xxx'E 3600m


3/4” dia. Nylon line (10m; 0.22kg)

1/2” Long link chain (1.5m; 4.14kg)


MP stopper (Depth 74m)

0.393" PP jacket cortland line (1207m; 37.6kg – 1200m cut)

Deploy Time:


45" Syntactic Foam Float 300 kg buoyancy (MA)

Moored Profiler (s/n 103) w/chipod

MP Set-up:MP Start Time/Date:

Profile Range:

Deploy Time: Line out:

MP stopper (Depth 1279.0m) Deploy Time:



2317.0m


1274.0m

ARGOS ID# Beep?

ARGOS On Time:Flasher On Time:

Email?

Flash?

ARGOS Beacon O.M.L. model 265 / Flasher S01-500


(1) 5/8" shackles (.66kg)3 ton swivel (3.32kg)


3528.0m

Start time:

SBE39 Temp. ext. w/press.; Att. to rel. (Depth 3588m; 0.70 kg)Serial#:_______ Deploy Time:______ Logging?_______




5/16" 3x19 PP jacket wire rope (30m; 7.5kg)3/8" aramid line - (1252m; 13.1kg – 1240m cut length)[1000m + 100m + 100m (Harper) + 20m + 20m (PS)]

3/8" aramid line - Harper (1010m; 10.4kg – 1000m cut)

DVS – RDI deep (depth 2310m; 1.0kg)Serial#: Deploy Time:



1304.0m


(1) 5/8" sling link (.41kg)(2) 1/2" shackle (.62kg)

2314.0m

MP stopper2321.0m



(1) 1/2" shackle (0.31kg)

10

1010

10

6

6 6

6



Deploy Time: Pinging?Serial#:


Deploy Time: Pinging?Serial#:

(8) 1/2" shackle (2.48kg)

Figure 4: Mooring diagram for MP-S.

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Figure 5: A PIES mooring ready for deployment.

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IWISE JN LR1 MOORING

Event Log / Notes:

(3) 5/8" shackle (2) 3 links LL chain

Drop link chain5/8" shackle & 5" ring

(3) 5/8" shackle (2) 3 links LL chain

1.0m

7.0m

8.5m

Top of float (??m depth)

10.5m


3 wheel

1/2” Long link chain (3m)


45" Syntactic Foam Float 309 kg buoyancy (JN)

(2) 5/8" shackles 2 ton swivel

(1) 5/8" shackle

12.0m

ADCP model RDI 75Khz Long Ranger w/press. (Depth 573m)

Start Time:

Deploy Time: Pinging?

Serial#:

ARGOS ID# Beep?

ARGOS On Time:

Flasher On Time:

Email?

Flash?



Drop Anchor:

Target: Depth:

Actual: Depth:

xx°-xx.xxx'N xxx°-xx.xxx'E ???m

ORE Acoustic Release model 8242XS (28 kg each)

Serial#: Enable: Release:

Disable: Rep (khz):

Deploy Time:

Int (khz):

Arm / Test:

Serial#: Enable: Release:

Disable: Rep (khz):

Deploy Time:

Int (khz):

Arm / Test:

11 12

11 12


1/2” shackle 4.0m

Figure 6: Mooring diagram for A-1.

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Figure 7: The underway CTD being operated at the stern.

07/25 08/01 08/08 08/15 08/22 08/29 09/05 09/12−40

−30

−20

−10

0

10

20

30

40

50

60

TP

XO

Zon

al C

urre

nt P

redi

ctio

n

Date 2010

Start→ End→

Figure 8: East-west velocity in cm/s predicted from TPXO6.2 during our cruise. Note the cruise datesare now 8/14-9/12, not those marked with dashed lines.

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R/V Revelle, Alford Cruise Cruise Plan, 7/28/2010shipsked.ucsd.edu/Schedules/2010/2010-RR-alford/CruisePlan_AlfordI...Matthew Alford Chief Scientist APL/UW

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