Joseph P. Smith

Richard B Coffin3
Rebecca E Plummer2
Paula S Rose2
3Richard B Coffin
2Rebecca E Plummer
2Paula S Rose
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  • Richard B Coffin, Leila J Hamdan, Joseph P Smith, Paula S Rose, Rebecca E Plummer, Brandon Yoza +2 others
  • 2014
Moderate elevated vertical methane (CH 4) flux is associated with sediment accretion and raised fluid expulsion at the Hikurangi subduction margin, located along the northeast coast of New Zealand. This focused CH 4 flux contributes to the cycling of inorganic and organic carbon in solid phase sediment and pore water. Along a 7 km offshore transect across(More)
Lipid A is a fundamental Gram-negative outer membrane component and the essential element of lipopolysaccharide (endotoxin), a potent immunostimulatory molecule. This work describes the metabolic adaptation of the lipid A acyl structure by Psychrobacter cryohalolentis at various temperatures in its facultative psychrophilic growth range, as characterized by(More)
  • Richard B Coffin, Christopher L Osburn, Rebecca E Plummer, Joseph P Smith, Paula S Rose, Kenneth S Grabowski +2 others
  • 2015
Coastal methane hydrate deposits are globally abundant. There is a need to understand the deep sediment sourced methane energy contribution to shallow sediment carbon relative to terrestrial sources and phytoplankton. Shallow sediment and porewater samples were collected from Atwater Valley, Texas-Louisiana Shelf, Gulf of Mexico near a seafloor mound(More)
In June 2007 sediment cores were collected in Alaminos Canyon, Gulf of Mexico across a series of seismic data profiles indicating rapid transitions between the presence of methane hydrates and vertical gas flux. Vertical profiles of dissolved sulfate, chloride, calcium, magnesium, and dissolved inorganic carbon (DIC) concentrations in porewaters, headspace(More)
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