DRI Update: 2 October 1999

1. This week two measurements were made at the SAX99 site from the R/V Tommy Munro: (1) Roger Flood surveyed the site with his Simrad EM3000 system to obtain high resolution bathymetry, and (2) Bob Stoll completed a set of low frequency compressional sediment sound speed measurements.

The EM3000 results turned out to be very useful. The region defined by the Seward Johnson anchor positions (see DRI Update of 16 Sept.) appears uniform, but just to the west there is a trough about 3 m deep aligned along a NW-SE axis. The EM3000 backscatter level was less in the trough suggesting mud, and this was confirmed with a grab sample taken by Bob Stoll. The tentative APL BAMS tower position turned out to be on the sloping edge of this trough, and thus we expect to move the BAMS position to the north, closer to shore. The XBAMS, low frequency, CSS, and the APL and ARL penetration sites are not affected by the trough. The EM3000 data displays are impressive.

Bob Stoll felt that he obtained good data for obtaining low frequency compressional sound speeds for the top meter of sediment. These results will be compared with higher frequency measurements obtained in the coming weeks to examine compression sound speed dispersion.

2. For those planning to come to the Sandman Motel/Suites near Fort Walton Beach (the motel is actually in West Destin), we have at this point rooms 302, 303, 304, 306, and 307. When arriving, go directly to Kate Bader's room (304) to get your key. There is no need to stop by the main office to check in. Kate can be reached at cell phone number (206) 890 1096 or by calling the Sandman Motel at (850) 243-1511 Ex. 304. If you do contact the main office, keep in mind that they tend to think of our group as the group from the University of Washington, since we made the arrangements. The main office is not open later than about 9 pm.

3. An updated SAX99 schedule follows.

SAX99 Schedule as of 2 Oct. 1999

Pelican Leg 1, Oct. 2-4:


FAU: Steve Schock, Jim Wulf, Paul Petrosky
APL: Eric Thorsos, Darrell Jackson
NRL: Kevin Briggs, Mike Richardson, Ricky Ray, Dan Lott, Don Walter, Conrad Kennedy

Oct 2:

0800- : Unload rad van (level on dock), load NRL equipment.
1400-1600: Load Schock equipment (expect to arrive about 1400).
1600: Begin transit to Fort Walton Beach (FWB).
2200: Arrive FWB. Begin tests of chirp/side scan sonar. Drift camera.

Oct 3:

0700-0900: Pelican into 2-pt moor.
0900-1500: Stereophoto; CTD; NRL ADP deployment.
1500: Begin chirp/side scan survey.

Oct 4:

0700-0900: Pelican into 2-pt moor.
0900-1400: Stereophoto.
1400-2000: Transit to CSS.
2000-2200: Load BAMS and XBAMS towers. Load sphere, coffer dam for sphere burial, hoses.

Pelican Leg 2, Oct. 5

Personnel at 0000 Oct. 5:

APL: Thorsos, Jackson, Kevin Williams, Le Olson, Eric Boget, Russ Light, Vern Miller
NRL: Briggs, Richardson, Ray, Lott

Oct 5:

0000-0600: transit to FWB.
0700-1000: Deploy BAMS and XBAMS towers.
1000-1200: Pelican into 2-pt moor.
1200-1500: Sphere burial.
1200-1800: Stereophoto.
1500: Shuttle Williams, Light, Miller to shore.
1800: Shuttle Briggs, Richardson, Ray, Lott, Lyons to shore at Destin Harbor.
1900: Begin transit to CSS.

Pelican Leg 3, Oct. 6-8:

Personnel at 0700 Oct. 6:

FAU: Schock, Wulf, Petrosky
APL: Thorsos, Jackson, Boget
OSU: Maziet, Cheseby

Oct. 6:

0700-1100: Load 4 moorings for Seward Johnson. Load Wheatcroft tripod.
1100-1700: Transit to FWB.
1700-2400: Mooring deployment.

Oct. 7:

0700: Shuttle Wheatcroft (OSU) to Pelican.
0700-1100: Complete mooring deployment (if necessary).
1100-1500: Chirp sonar at Lopes site (bridle deployment; 1-pt moor).
1500-1600: Deploy Wheatcroft tripod.
1600-1700: Dive at tripod site (Wheatcroft, Cheseby).
1600-2400: Chirp sonar at APL and ARL penetration sites (bridle deployment).

Oct. 8:

0000-0600: Transit to CSS.
0700- : Unload Schock equipment.

[Remainder in less detail.]

Pelican Leg 4, Oct. 8-17

Personnel at beginning of Leg 4:

APL: Thorsos, Jackson, Olson, Boget
UW: Jill Schmidt, Liko Self
UM: Pete Jumars
TRACOR: Charles Greenlaw, Duncan McGehee
NRL: Briggs, Richardson
Total: 11 (max is 13)

Oct. 8:

Load rad van and equipment for Holliday, Jumars/Schmidt/Self, NRL, Dahl, Buckingham.
[Note: Part of Dahl equipment will go on Pelican, part on Seward Johnson].
Transit to FWB.

Oct. 9:

(AM) Shuttle Van Holliday (TRACOR) to Pelican (total 12).
Deploy TRACOR tower.

Oct. 10:

Continue deployment, buoy off TRACOR lines at edge of Seward Johnson area.

(AM) Shuttle David Thistle (FSU) and Keith Suderman (FSU) to Pelican.
(PM) Shuttle Holliday, Greenlaw, McGehee, Thistle, Suderman to shore at Destin Harbor.
Shuttle Dale Bibee (NRL) to Pelican (total 10).

[The following assumes the Seward Johnson will arrive at CSS by the evening of the 11th.]

Oct. 11:

(AM) Shuttle Thorsos, Olson, Boget to shore.
Shuttle Ray, Lott, Thistle, Suderman to Pelican.

(Late AM) Shuttle Mike Buckingham (SIO), Thomas Berger (SIO), Fernando Simonet (SIO) to Pelican (total 12 staying that night).
Start Jumars/Schmidt/Self and NRL/APL BAMS manipulations.

(PM) Shuttle Thistle, Suderman to shore.

Personnel at 1800 on Oct. 11: Briggs, Jackson, Jumars, Schmidt, Self, Richardson, Ray, Lott, Bibee, Buckingham, Berger, Simonet

Oct. 11-14: Bibee low frequency, gas content.

Oct. 12:

(AM): Shuttle Thistle, Suderman to Pelican (total 13 staying that night).
Deploy wave buoy.

(PM): Shuttle Thistle, Suderman to shore.

Oct. 13:

(AM): Seward Johnson arrives at FWB.
Shuttle Thistle, Suderman, Wheatcroft, Cheseby to Pelican.
Jackson, Richardson, Ray, Lott from Pelican to Seward Johnson.

Personnel at 1800 on Oct. 13: Briggs, Jumars, Schmidt, Self, Bibee, Wheatcroft, Cheseby, Buckingham, Berger, Simonet Thistle, Suderman (total 12).

Oct. 14:

(AM): Shuttle Buckingham to shore.
Shuttle Cara Fritz to Pelican.

(PM): Shuttle Bibee to shore (total 11).

Oct. 14-24: Wheatcroft, Cheseby, Fritz--IRP and coring ops.

Oct. 16:

(PM): Shuttle Berger, Thistle, Suderman to shore.
Briggs, Simonet from Pelican to Seward Johnson.

Personnel at 1800 on Oct. 16: Jumars, Schmidt, Self, Wheatcroft, Cheseby, Fritz (total 6) .

Oct. 17: Transit to CSS.

Leg 5, Oct. 17-22:


NRL: Dawn Lavoie, Allan Reed
APL: DJ Tang, Mike Welch, Skip Kolve, John Elliott
UM: Jumars
UW: Schmidt, Self
OSU: Wheatcroft, Cheseby, Fritz

Oct. 17:

Load Tang (APL) equipment (IMP), Lavoie/Reed (NRL) equipment.
Transit to FWB.

Oct. 17-21: IMP deployments (IMP transferred to Seward Johnson via deployment and recovery).

Oct. 17-21: Lavoie,Reed: permeability measurements.



Oct. 20: (AM) Shuttle Kolve to shore.

Oct. 21: Lavoie, Reed, Tang, Welch from Pelican to Seward Johnson. Briggs from Seward Johnson to Pelican.

Oct. 22: Transit to CSS.

Pelican Leg 6, Oct. 22-25:


NRL: Briggs
UM: Jumars
UW: Schmidt, Self
OSU: Wheatcroft, Cheseby, Fritz
CSS: Joe Lopes, Ed Kloess

Oct. 22: Load Lopes (CSS) tower. Transit to FWB.

Oct. 23: (AM): Shuttle Tim Orsi (PSI), Dick Bennett (Seaprobe), Jana Avant, Maritza Abril to Pelican. Deploy Lopes tower. Turn around Wheatcroft tripod.

Oct. 24: (PM): Shuttle Orsi to shore.

Oct. 24: Lopes and Kloess from Pelican to Seward Johnson.

Oct. 25: Transit to CSS. Off load rad van.

Pelican Leg 7, Oct. 25-29:


NRL: Briggs
UM: Schmidt, Self, Paul Johnson, Mike Hutnak

Oct. 25: Load Johnson equipment. Transit to FWB.

Oct. 26-28: Johnson tripod deployments.

Oct. 26(PM): Shuttle Bennett to shor. Shuttle Jehrome Stockstill (Seaprobe) to Pelican.

Oct. 28: Transfer personnel and equip to Seward Johnson.

Oct. 28 (PM): Shuttle Stockstill to shore.

Oct. 29: Transit to CSS. Unload Johnson equipment. Reload rad van.


Oct. 9: Depart Harbor Branch.

Oct. 9-11: Transit to CSS.

Oct. 11 (evening): Arrive CSS, begin loading for NRL, APL (including Dahl), ARL, Jaffe, Lopes-electronics.

Oct 12: Complete loading, begin transit to FWB.


APL: Thorsos, Williams, Olson, Boget, Light, Miller, Mike Kenney, Paul Aguilar, Brian Strully
ARL: Nick Chotiros, David Gage
NRL: Sean Griffin, John Bradley
Total: 14

Oct. 13:

Jackson, Richardson, Ray, Lott to Seward Johnson from Pelican (total 17).
ISSAMS at low frequency site, Lopes site, and east of BAMS/ XBAMS site using dynamic positioning.

Oct. 14:

(AM) Shuttle Tom Lehman (APL), Mike Ohmart (APL), Brett McCurley (ARL), Holliday, Greenlaw, McGehee to Seward Johnson (total 23).
Go into 4-pt moor; moorings deployed earlier by Pelican.
ISSAMS at APL and ARL sites.
Bring TRACOR lines on board; test.

Oct. 15:

Continue TRACOR and ARL tests.
Deploy APL frame, batteries, ...

(PM) Shuttle Holliday, Greenlaw, McGehee, Kenney to shore (total 20).

Oct. 16: Briggs, Simonet to Seward Johnson from Pelican (total 22).

Oct. 16 -17: Begin ARL ROV and buried array ops. Continue APL deployment.


Oct. 18:

(AM): Shuttle Jules Jaffe (SIO) and Karl Moore (SIO) to Seward Johnson.
(PM): Shuttle Griffin, Bradley, McCurley to shore (total 20).

Oct. 18: Begin APL penetration ops.

Oct. 18-19: Jaffe deployment (laser line scanner).


Oct. 20; (AM): Shuttle Jaffe and Simonet to shore (total 18.).

Oct. 21:

(AM): Shuttle Rob McDowell, Thistle, Suderman to Seward Johnson
Lavoie, Reed to Seward Johnson from Pelican.
Briggs to Pelican from Seward Johnson (total 24).

Oct. 21-23: Lavoie, Reed: permeability measurements.

Oct 23 (PM): Shuttle Roger Banks (ARL) to Seaward Johnson.

Oct. 23 (PM): Shuttle Lavoie, Reed, Thistle, Suderman, David Smith to shore (total 20).

Oct. 24 (PM): Shuttle McDowell to shore (total 19).

Oct. 24-25:

Lopes and Kloess to Seward Johnson from Pelican (total 21).
Lopes tower deployment: bring lines on board.

Oct. 25-29: CSS SAS measurements from CSS ship.

Oct. 28: Take on Pelican researchers.

Oct. 29 (AM): Shuttle Eric Smith (ARL) to Seward Johnson (total 22).

Oct. 29 (PM): Shuttle Welch, Chotiros, Banks to shore (total 19).

Oct. 30 (AM): Shuttle Gage to Seward Johnson (total 20).

Nov. 9 (AM): Shuttle Chotiros to Seward Johnson (total 21).

Nov. 9 (PM): Shuttle Eric Smith to shore (total 20)

Nov. 12-14: Recover equipment.

Nov. 14: Transit to CSS.

Nov. 15: Off load at CSS, begin transit to Harbor Branch.