This cruise report provides a record of data collected during S-200 aboard the SSV
Robert C. Seamans on her voyage from Honolulu, Hawaii to San Francisco, California
(Figure 1). We collected samples or data at 69 discrete oceanographic stations (Table 1)
Continuous measurements included sea surface temperature, salinity, and in vivo
fluorescence from the ship’s flow through system, and subsurface currents with a hull-mounted Acoustic Doppler Current Profiler (ADCP). This report summarizes sea surface
chemical and biological characteristics (Tables 2-4), subsurface biological samples (Table
4), chemical properties with depth (Table 5), and sediment grain size (Table 6). Largescale
hydrography of the NE Pacific shows low salinity intermediate water masses and
both thermocline and deep chlorophyll maximum shoaling eastward (Figure 2). ADCP
data reveal locations and sizes of mesoscale eddies in the NE Pacific, and the strength and
depth of zooplankton vertical migration (Figure 3). Lengthy CTD, ADCP, and flowthrough
data are not reported here. All unpublished data can be made available by
arrangement with the Sea Education Association (SEA) archivist (contact information,
p.2). The information in this report is not intended to represent final interpretation of the
data and should not be excerpted or cited without written permission from SEA.
