A systematic study of highly branched isoprenoids (HBI) was carried out in
suspended particulate material (SPM) and Washington coastal sediments to determine
their origin and fate. SPM collected at 10 m depth was filtered through Nitex
membranes. C₂₅ HBI were found only in the 1.2-40 μm range over the shelf....
Time series records of horizontal current velocity, temperature, light attenuation
and settling particle flux obtained using moored instruments above Endeavour Ridge in
the northeast Pacific Ocean elucidate the dynamics of a deep-sea, neutrally buoyant,
hydrothermal plume. Data collected in four mooring deployments over three years
within 20 km of an...