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    Water samplers for open ocean tracer release experiments

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    WHOI-98-20.pdf (2.030Mb)
    Date
    1998-12
    Author
    Donoghue, Terence  Concept link
    Ledwell, James R.  Concept link
    Doherty, Kenneth W.  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/328
    DOI
    10.1575/1912/328
    Keyword
     Water saplers; Tracer experients; Oceanogrphy 
    Abstract
    Conventional "spot" sampling of patchy distributions of oceanic constituents can lead to sampling errors. Interpretation of results based on data of disparate temporal or spatial resolution can be difficult or impossible. Ths report discusses the design and performance of two water sampling devices which attempt to minimize these problems. The devices were created for open ocean tracer release experiments, but can be used for other experiments where inhomogeneity is anticipated. The first sampler is a mechancally-operated, variable-rate integrating water sampler which acquires a time-averaged sample. The sampler incorporates featues of both the spring-driven and the hydraulically-driven samplers described by Ledwell et al., 1991. The second sampler is a multichamber sampling system incorporating a battery powered pump and valve system made by McLane Research, Inc., of Falmouth, Massachusett. The system consists of a micro-gear pump, a 50-port valve with programmable controller, and carousels contaning fifty glass sampling syringes. It can be programmed to sample on a variety of schedules allowing the user flexibilty in the field to adapt to changing requirements. A general description, operational instructions, and performance analysis are provided for each sampler system.
    Collections
    • Applied Ocean Physics and Engineering (AOP&E)
    • WHOI Technical Reports
    Suggested Citation
    Donoghue, T., Ledwell, J. R., & Doherty, K. (1998). Water samplers for open ocean tracer release experiments. Woods Hole Oceanographic Institution. https://doi.org/10.1575/1912/328
     

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