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September
14 - 21, 2001 vol. 38. No. 37 Tuesday September 18 DOCTORAL DISSERTATION DEFENSE - Timothy Galllaudet will defend his doctoral dissertation entitled "Shallow Water Acoustic Backscatter and Reverberation Measurements Using a 68kHz Cylindrical Array" in 100 Vaughan Hall (formerly Endurance Hall) at 3 p.m. The public is invited. (Tim Ryan, tjryan@ucsd.edu) Thursday, September 20 MSPPC MEETING - The meeting of Marine Science Physical Planning Committee (MSPPC) has been cancelled. The next meeting will be October 18, 2001. Please let Jon Berger x42889 or John Desch x44464 know if you have any questions. Friday, September 21 MARINE BIOLOGY SEMINAR - Fred Partensky, Biological Station of Roscoff, France, will present "Speciation Processes in Prochlorococcus, the Smallest and Most Abundant Photosynthetic Organism in the Ocean" in 4500 Hubbs Hall at 12 noon. (Kim Thamatrakoln, x22503) Notices FLAG ON PIER - Scripps Institution of Oceanography at the University of California, San Diego, is deeply saddened by the terrorist attacks upon the United States of America. In honor of the victims of these tragedies, and as a sign of proud support for our country, Scripps Institution will fly a 40 ft. x 20 ft. U.S. flag from the Ellen Browning Scripps Memorial Pier. (Jill Hammons, x43948) MESSAGE FROM CARINA - After 17 years in this beautiful place, I will be leaving Scripps to carry out some research work in Chile. I plan to come back every June to take care of ongoing projects here. Effective September 18 my new address will be: Carina Lange Ship News COOK12MV Chief Scientist's cruise report - Fri, 7 Sep 2001 03:11:34 +0000 (GMT) - Since departing Lae Aug 20 we have imaged much of the Huon Gulf (located in Eastern Papua New Guinea, north of Australia) with SeaBeam and ancillary Knudsen 3.5 kHz and gravity data. This area consists of a series of drowned coral platforms, which are subsiding rapidly because of the load of the collision of the Huon Peninsula and Finisterre Ranges to the north. On Aug 23 we launched the DSL 120 but aborted after 5 hours because of lack of signal. We then launched 4 transponders in 800 - 900 m water depth and deployed Jason Aug 24. Elevator followed on Aug 25 and was retrieved Aug 26 with 105 pounds of samples, all coral or other carbonate rock. The elevator has been recovered 7 times so far with a total of 940 pounds of reef material. We made a brief stop offshore Lae on August 30 to pick up late arriving freight and a student from the University of Papua New Guinea. Jason is working surprisingly well and getting excellent sample recovery. After working on the DSL120, we deployed it on September 2. It is now working well also and giving excellent side scan imagery. Phase bathymetry is questionable. We are into our fifth day of DSL120 work and plan to continue for two more days. The rest of the cruise will be devoted to further sampling with Jason. So far the cruise is a resounding success. September 10, 2001 - M. Kurz, Chief Scientist on board R/V Revelle (D.
Fornari and D.Geist co-chiefs) - Bi-Weekly Science Report " DRIFT
Leg 4 - R/V Revelle completed two MR1/Simrad EM120 surveys on September
1. The first survey covered the area westward of Floreana and South of
Isabela island. The second covered the area west of Fernandina and Isabela
between Roca Redonda and southern Isabela. The MR1 sidescan sonar provides
excellent new backscatter acoustic imagery of these areas, revealing young
lava flows, debris flows resulting from mass wasting, nested terraces,
and pillow lava terrain. There are significant variations in the relative
abundance of these features between the various areas. The sampling program
began on September 1, based largely on the sonar mapping. As of September
6 we had completed 21 dredges and five glass cores from Roca Redonda,
Volcan Wolf, Volcan Ecuador, and the submarine slopes of Fernandina. On
September 6, due mainly to problems with the trawl winch tensiometer,
the sampling program was interupted to make an MR1/Simrad survey of the
seafloor near Pinta, Marchena and Genovesa islands. After the survey was
completed we deployed 2 dredges and a glass core on the ridge to the east
of Genovesa, in an effort to further document this newly discovered feature.
After returning to the Fernandina/Isabela area, and deploying a single
dredge on the NW rift of Fernandina, we deployed the WHOI towed camera.
During the camera tow (on September 9), the wire parted and the camera
was lost at 1664 meters water depth (0 degrees 14.47'S 91 degrees 44.89'W)
on Fernandina's NW rift. We have not attempted recovery of the camera
due to the lack of necessary equipment on board. We have resumed dredging
on the southwest flank of Fernandina and expect to be moving toward Cerro
Azul and Floreana in the next few days. The Master and crew of R/V Revelle
have provided excellent support and have dealt with some difficult problems
with a combination of skill, hard work and professional attitude. The
progress of the cruise can be found on the DiveDiscover website www.divediscover.
whoi.edu). CRUISE MAP INDEX/AREA/ CH SCI/INSTITUTION/ PORTS DAYS/AGENCY/ R/V Melville R/V New Horizon R/V Robert Gordon Sproul David Starr Jordan
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