Bacteria were isolated from water at Alder Slough, Oregon. Of
15 isolates grown successfully in the medium employed, 100% showed
measurable uptake of Zn-65. A growth curve was established for one
isolate, a gram-negative rod designated AS-1. Increasing Zn-65 uptake
was found generally to correspond with increasing growth of
AS-1....
Artificial radionuclides, induced in water used as a coolant in the Hanford reactors, are discharged into the Pacific Ocean by the Columbia River. Gamma-ray spectrometric measurements show that levels of 65Zn decrease in both sediments and benthic animals with distance from the mouth of the river and with depth of...
In 1960 a program of monitoring the zooplankton populations of Yaquina Bay, Oregon, was begun. The frequency of sampling was maintained at close to weekly intervals after 1 January 1963, usually at five stations. Abundances of all the species found in the bay of both meroplankton and holoplankton have been...
The calibration factor of LaCoste-Romberg , surface-ship gravity
meter 5-9 was checked against a 1200 mgal range of land base stations
along the West Coast of the United States. Previous checks at other
base stations provided conflicting results as to the accuracy of this
meter's calibration factor supplied by the...
Research on the application of soluble, metal chelates for
water tracing using thermal neutron activation analysis for tracer
determination has led to the development of several tracers with
promising solution stabilities (conservative behavior) and determination sensitivities. The solution stabilities of the ethylenediamine
tetraacetic acid (EDTA) and the diethylenetriamine pentaacetic acid...
In situ salinity, turbidity and temperature were measured at discrete depths and water samples for radioanalysis were simultaneously collected in the Columbia River Estuary using a specially designed instrument package. Particulate radioactivity was concentrated by filtration and the dissolved radioactivity by evaporation or ferric oxide bulk precipitation. Radioanalysis was by...
The character of the primary seismic wave in the
range of distances between 100 and 600 km is affected by
such factors as the nature of the source, exponential
attenuation, crustal structure, type of wave propagation,
recording site geology and instrument response. The
first arrivals from the GNOME and SHOAL...
The sea as a dynamic conducting medium interacts continually
with the earth' s magnetic field. The physical principles underlying
this interaction are reviewed. These results are applied to the
particular problem of towed electrodes at the sea surface. Data
using this method are then shown to be sensitive to stability...