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Woods Hole Oceanographic Institution

Richard Camilli

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Publications
» Characterizing Spatial and Temporal Variability of Dissolved Gases in Aquatic Environments with in situ Mass Spectrometry. Environmental Science and Technology, in press. doi:10.1021/es803717d
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“Method for rapid localization of seafloor petroleum contamination using concurrent mass spectrometry and acoustic positioning” Marine Pollution Bulletin in press. doi:10.1016/j.marpolbul.2009.05.016.


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 “Toward Extraplanetary Under-Ice Exploration: Robotic Steps in the Arctic”,  Journal of Field Robotics. 26(4): 411-429, 2009.


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“The 2005 Chios Ancient Shipwreck Survey: New Methods for Underwater Archaeology.” Hesperia, in press.


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“Deep Sea Underwater Robotic Exploration in the Ice-Covered Arctic Ocean with AUVs” In Proceedings of the 2008 International Conference on Robotics and Systems. Nice, France. September 22-26, 2008.


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 “Active methane venting observed at giant seafloor pockmarks along the U.S. mid-Atlantic shelf break”, Earth and Planetary Science Letters, Vol. 267, No. 1-2., March 2008, pp. 341-352.


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  “Dissolved methane distributions and air-sea flux in the plume of a massive seep field, Coal Oil Point, California”, Geophysical Research Letters,  34(22) L22603, 2007, doi:10.1029/2007GL031344, 2007.


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 “NEREUS/Kemonaut, a mobile autonomous underwater mass spectrometer”. Trends in Analytical Chemistry 23(4):307-313.  2004.


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  “Real-time Streaming of Environmental Field Data”. Computers & Geosciences. 29(4): 457-468. 2003.


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“NEREUS: engineering concept for an underwater mass spectrometer”. Trends in Analytical Chemistry 21(8):526-533. 2002.


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  "Investigation of Hydrothermal Vents in the Aegean Sea using an Integrated Mass Spectrometer and Acoustic Navigation System onboard a Human Occupied Submersible." In Rapp. Comm. Internationale pour l’Exploration Scientifique de la Mer Mediterranèe (CIESM) 38: 79, 2007


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“Characterizing marine hydrocarbons with in-situ mass spectrometry”, In Proceedings of  MTS/IEEE OCEANS 2007, Vancouver, Canada. Sept. 29-Oct. 4 2007.


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 “Rapid Swath Mapping of Reef Ecology and Associated Water Column Chemistry in the Gulf of Chiriquí, Panamá”, In Proceedings of  MTS/IEEE OCEANS 2007, Vancouver, Canada. Sept 29-Oct 4 2007.


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“Design of a Gas Tight Water Sampler for AUV Operations” In Proceedings of IEEE OCEANS Europe 2007. Aberdeen, Scotland 2007.


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“Bathymetry-Aided Doppler Re-Navigation for AUVs”. In Proceedings of  MTS/IEEE OCEANS 2005, Washington DC, USA 2005.


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“Integrating in-situ chemical sampling with AUV control systems”. In Proceedings of  MTS/IEEE OCEANS 2004, Kobe, Japan 2004.


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Development of mobile computing applications for hydraulics and water quality field studies. In: Hydraulic Information Management. Blain, W.R. and Brebbia, C.A. (ed). WIT Press. Southampton.2002. pp. 275-284.




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R. Camilli and A. N. Duryea , Characterizing Spatial and Temporal Variability of Dissolved Gases in Aquatic Environments with in situ Mass Spectrometry. Environmental Science and Technology, in press. doi:10.1021/es803717d

The TETHYS mass spectrometer is intended for long-term in situ observation of dissolved gases and volatile organic compounds in aquatic environments. Its design maintains excellent low mass range sensitivity and stability during long-term operations, enabling characterization of low-frequency variability in many trace dissolved gases. Results are presented from laboratory trials and a 300-h in situ trial in a shallow marine embayment in Massachusetts, U.S.A. This time series consists of over 15000 sample measurements and represents the longest continuous record made by an in situ mass spectrometer in an aquatic environment. These measurements possess sufficient sampling density and duration to apply frequency analysis techniques for study of temporal variability in dissolved gases. Results reveal correlations with specific environmental periodicities. Numerical methods are presented for converting mass spectrometer ion peak ratios to absolute-scale dissolved gas concentrations across wide temperature regimes irrespective of ambient pressure, during vertical water column profiles in a hypoxic deep marine basin off the coast of California, U.S.A. Dissolved oxygen concentration values obtained with the TETHYS instrument indicate close correlation with polarographic oxygen sensor data across the entire depth range. These methods and technology enable observation of aquatic environmental chemical distributions and dynamics at appropriate scales of resolution.

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