Bottom sediment sampling

摘要: Tests with sampling equipment during 1967 and 1968 in Lake Ontario showed that some of the bottom samples were badly disturbed. As a result these tests, further extensive trials bottom-sampling conducted Georgian Bay 1968. These designed to test disturbance sediments caused by ship movement efficiency suitability various types devices. It was found under typical conditions, induced when total water depth less than about 6 m. Also it ship, procedures deeper water, induces column, beneath it, at least 14 3 Gravity corer, 2 multiple corers, Grab samplers. tests show their usefulness for both biological geological sampling. All gravity corers proved efficient particular tasks. The most successful grab samplers be Ponar Shipek bucket sampler.