Our major effort since initiation of this contract has been directed
toward (1) procuring the gamma-ray spectrometric equipment and integrating
the components into an operational system, and (2) analyzing
the samples obtained from the midwater trawl program of the Department
of Oceanography and evaluating and interpreting the resulting data
Analyses...
This report covers the first full year of operation of our gammaray
spectrometry facility. A part of the contract period was devoted
to calibration of the instrument, and therefore, a brief report on this
procedure is included.
The Fukushima Daiichi nuclear disaster of 2011 made it apparent that releases of fission products to marine environments is a very real possibility. Additional data on the movement of material through marine environments can be used by radioecology personnel to assist with both ecosystem protection as well as environmental cleanup...
The International Commission on Radiological Protection (ICRP) has modeled twelve reference animal and plant (RAP) species using simple geometric shapes in Monte–Carlo (MCNP) based simulations. The focus has now shifted to creating voxel phantoms of each RAP to advance the understanding of radiation interactions in nonhuman biota. The work contained...
Samples of benthic organisms off the coast of Oregon, taken
from depths varying from 50 to 2900 meters, have been analyzed in
terms of diversity at a given station, and similarity and ecological
distance to other stations. Estimates of epifauna abundance were
also made. In the analysis an important distinction...
Fifty-seven stranded marine mammals representing seven species
were examined over a period of three years. The primary cause of
death along with contributing factors, incidental pathology and
parasites is reported for each animal examined.
Gunshot wounds directly or indirectly caused the death of 14
of 44 seals and sea lions...