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During the autumn of 1988 the US Geological Survey (USGS) participated in a cooperative marine geological and geophysical expedition in the Pacific Ocean with the Union of Soviet Socialist Republics. The work was conducted aboard the Soviet research vessel DMITRIY MENDELEJEV, in three survey areas of the northern Pacific Basin, two along the Mendocino fracture zone, and one along the Murray fracture zone (Fig. 1). Operations included acoustic and geopotential profiling, geologic and geothermic ocean-bottom sampling, and a deep seismic-sounding (seismicrefraction) experiment. This report (1) documents these scientific operations from the perspective of the USGS participant onboard, (2) aims to familiarize US scientists preparing for in future cooperative research programs with some of the methods of Soviet marine geoscience, and (3) identifies several procedural issues which US participants need to consider to optimize the success of future cooperative marine geoscience programs.

u.s. geological survey open file report/open-file report

Cooperative research in marine geology with the USSR Academy of Sciences; the 42nd expedition of the R/V Dmitriy Mendelejev in the North Pacific Ocean; summary of operations