Thursday, December 30, 2010
Earlier this month, I attended the AGU Fall Meeting and presented the first results of our Mariana vent larval study. Click HERE for our abstract #OS13G-07, "Larval abundance and dispersal at deep-sea hydrothermal vents in the southern Mariana Trough." At the end of the talk, I showed a short video clip of live larvae, which you can view HERE (wmv file, ~4MB). Happy new year!
Friday, September 17, 2010
The photo at left shows Guam on the starboard horizon, as we were returning to land on Sept. 15th. After our gear was safely unloaded onto a flat-bed truck, Susan and I caught a bus with our colleagues to the Guam Hilton. We had the good fortune to relax for a day, including snorkeling in the warm clear waters, and then we had to say goodbye. In Japanese there are so many different ways to say goodbye, but I am hoping that we can say "Jaa, mata" (jahh-mah-tah), which is an informal way of saying "see you again." This cruise was an incredibly enriching experience - both scientifically and culturally. Susan and I look forward to working on our samples and data back at home in Woods Hole.
Wednesday, September 15, 2010
14-Sep-2010. Today our Chief Scientist Kojima-san returned to Snail site to recover our JAMSTEC collaborators’ demersal plankton pump on Dive 1228. Accompanying Kojima-san on the dive was our cruise mascot, “Gori-san” (shown in photo). We are hoping that Gori-san brought us good luck and that we will have a lot of biology work to do this evening, the last night at sea. I would like to again thank the Captain and everyone on board R/V Yokosuka who helped make this cruise such a great success. Arigatou gozaimasu (ah-ree-gah-tohh goh-zah-ee-mah-soo).
|Sunset rays above Philippine Sea|
Tuesday, September 14, 2010
Monday, September 13, 2010
|Photo courtesy JAMSTEC|
Friday, September 10, 2010
Wednesday, September 8, 2010
Today I am so thankful and appreciative of the opportunity to dive to the seafloor at Archaean Vent. We were successful in placing the JAMSTEC demersal plankton pump near an active vent with a robust faunal community. In the photo taken before the dive, you can see me and my collaborator Hiromi Watanabe standing next to the pump on the Shinkai basket (the pump has reflective tape on the frame). Accompanying me on Dive 1223 were pilot Chida-san and co-pilot Yanagitani-san (see photo inside of Shinkai). The third photo below shows sampling at one of the active black smokers atop the Archaean sulfide mound.
|Photo courtesy JAMSTEC|
|Photo courtesy JAMSTEC|
Tuesday, September 7, 2010
). Yokosuka is a large research vessel, about 100 m in length, and holds a crew of about 30, plus 13 members of the Shinkai operations team and 15 scientists.
Today we were very pleased to meet the other scientists for cruise YK10-11. In the photo, from left, are the biologists: Takenori Sasaki, Shigeaki Kojima (our Chief Scientist from University of Tokyo), Hiromi Watanabe (our collaborator at JAMSTEC), me, Tomomi Ogura, Hiroka Hidaka, MiHye Seo, Florence Pradillon(our collaborator at JAMSTEC), and Sayaka Mino (Susan is taking the photo).
Tuesday, August 31, 2010
Saturday, August 28, 2010
Becker et al. (2010) Geochem. Geophys. Geosyst., 11, Q04X13, doi:10.1029/2009GC002719. The southern Mariana back-arc was recently listed as a region of "highest international priority" for hydrothermal studies by the InterRidge Working Group on Long-Range Exploration (http://www.interridge.org/WG/Exploration).
Friday, August 20, 2010
On Tuesday, we shipped our instruments, mooring gear, and supplies to the ship's agent in Guam. Susan and I have spent weeks gathering all the things that are now itemized on a big spreadsheet and distributed into 11 packages weighing 4000 lbs! Why does the shipment weigh so much? The heaviest "package" is actually a rack of steel anchor weights (for the plankton pump moorings, which will be described in a later post). The plankton pump boxes, with extra batteries, each weigh over 300 lbs. I am writing on one of these in the attached photo. Also in the photo, you can see our red boxes (heavy with mooring hardware), black totes (with lab and office supplies), and miscellaneous other gear such as polypro line and buckets.
Sunday, August 15, 2010
Monday, August 2, 2010
Since the discovery of deep-sea hydrothermal vents, scientists have been perplexed by the question: How are these vent sites colonized and, more specifically, How are the faunal populations established and maintained at these very discrete and often ephemeral habitats? The cruise in September 2010 will visit three of the Vents (Volcanic) Unit sites in the U.S. Marianas Trench Marine National Monument: South Backarc (also called Snail), Archaean, and Pika. The larval studies that we will conduct with our Japanese colleagues will help address the question of how populations of vent-endemic species are connected at hydrothermal vents within the Monument. For more information about the Monument, which was established in 2009, please see: http://www.fws.gov/marianastrenchmarinemonument/. You can see a map of the Monument on the Friends of the Monument blog: http://marianamonument.blogspot.com/2009/06/mariana-trench-marine-national-monument.html.
Monday, June 7, 2010
Susan and I are now in the midst of preparing for the cruise in September. We conducted a couple of Skype phone calls with our collaborators at JAMSTEC and helped prepare a plankton pump deployment plan for the cruise. We brought our two pumps to the manufacturer (McLane) for servicing and ordered mooring gear from weights and releases to floats and strobes. We are learning so much in our Japanese class, too. Dewa mata (see you later).
Tuesday, May 4, 2010
Welcome to the vent larvae cruises blog. Later this year, in September 2010, members of the Mullineaux lab group will be participating on a Japanese research cruise to study larvae at deep-sea hydrothermal vents in the southern Mariana Trough. Our group's previous cruises have included studies of larvae at the East Pacific Rise, such as the LADDER project cruises in 2006 and 2007 (http://www.whoi.edu/projects/LADDER/). We also maintain a website and published a Photographic Identification Guide to Larvae at Hydrothermal Vents (http://www.whoi.edu/vent-larval-id/).