A suspended-particle rosette multi-sampler for discrete biogeochemical sampling in low-particle-density waters

J. A. Breier, C. G. Rauch, K. McCartney, Brandy M Toner, S. C. Fakra, S. N. White, C. R. German

Research output: Contribution to journalArticlepeer-review

33 Scopus citations

Abstract

To enable detailed investigations of early stage hydrothermal plume formation and abiotic and biotic plume processes we developed a new oceanographic tool. The Suspended Particulate Rosette sampling system has been designed to collect geochemical and microbial samples from the rising portion of deep-sea hydrothermal plumes. It can be deployed on a remotely operated vehicle for sampling rising plumes, on a wire-deployed water rosette for spatially discrete sampling of non-buoyant hydrothermal plumes, or on a fixed mooring in a hydrothermal vent field for time series sampling. It has performed successfully during both its first mooring deployment at the East Pacific Rise and its first remotely-operated vehicle deployments along the Mid-Atlantic Ridge. It is currently capable of rapidly filtering 24 discrete large-water-volume samples (30-100 L per sample) for suspended particles during a single deployment (e.g. >90 L per sample at 4-7 L per minute through 1 μm pore diameter polycarbonate filters). The Suspended Particulate Rosette sampler has been designed with a long-term goal of seafloor observatory deployments, where it can be used to collect samples in response to tectonic or other events. It is compatible with in situ optical sensors, such as laser Raman or visible reflectance spectroscopy systems, enabling in situ particle analysis immediately after sample collection and before the particles alter or degrade.

Original languageEnglish (US)
Pages (from-to)1579-1589
Number of pages11
JournalDeep-Sea Research Part I: Oceanographic Research Papers
Volume56
Issue number9
DOIs
StatePublished - Sep 2009

Bibliographical note

Funding Information:
We would like to thank Lauren Mullineaux and the LADDER 2007 cruise crew and science party (NSF OCE-0424953), and Anna-Louise Reysenbach and the Mid-Atlantic Ridge 2008 cruise crew and science party (NSF-OCE-0728391, 0525907, 0549829) for allowing us to conduct trial deployments of the SUPR sampler. The Woods Hole Oceanographic Institution's Deep Ocean Exploration Institute funded construction of the SUPR sampler. Postdoctoral support for J.A.B. was through RIDGE 2000 (NSF OCE-0550331). During development, significant contributions were made by Mike Purcell and John Fetterman (WHOI), and Ken Doherty and Michael Mathewson, Ivory Engstrom, and Tim Shanahan (McLane Research Laboratories Inc.). The Advanced Light Source is supported by the Office of Science, Basic Energy Sciences, Division of Materials Science of the US Department of Energy (DE-AC02-05CH11231).

Keywords

  • Deep-sea
  • Geochemistry
  • Hydrothermal vents
  • Instrumentation
  • Remotely operated vehicle
  • Suspended particles

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