Proc. IODP, 329, Construction and first deployment of the JOIDES Resolution’s Secchi discs

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Chapter contents Abstract The world’s clearest marine water, Secchi discs, and the JOIDES Resolution Secchi disc construction Deployment Small disc Large disc Preliminary results and recommendations for future deployments Acknowledgments References Figures F1. Secchi discs. F2. Staff measuring deployment line. F3. Observers. F4. Disc retrieval. PDF file			Previous \| Next doi:10.2204/iodp.proc.329.111.2011 Construction and first deployment of the JOIDES Resolution’s Secchi discs¹ Bryce Hoppie,² Timothy R. Bronk,³ and the Expedition 329 Scientists² Abstract The Secchi disc is a tool for measuring water transparency. For over a century, the device has been used in pelagic environments to assess surface productivity and overall water purity. Two new Secchi discs were constructed and tested during Integrated Ocean Drilling Program Expedition 329 for use by staff of the R/V JOIDES Resolution during future expeditions. The results of the initial deployments of the discs during the expedition in the center of the South Pacific Gyre, the world’s “clearest” marine water, are presented here. ¹ Hoppie, B., Bronk, T.R., and the Expedition 329 Scientists, 2011. Construction and first deployment of the JOIDES Resolution’s Secchi discs. In D’Hondt, S., Inagaki, F., Alvarez Zarikian, C.A., and the Expedition 329 Scientists, Proc. IODP, 329: Tokyo (Integrated Ocean Drilling Program Management International, Inc.). doi:10.2204/iodp.proc.329.111.2011 ² Expedition 329 Scientists’ addresses. ³ Integrated Ocean Drilling Program, Texas A&M University, College Station TX 77843-3146, USA. Publication: 13 December 2011 MS 329-111 Top of page \| Previous \| Next