| abstract |
The present invention discloses a piston-type free-falling columnar sampler that can easily collect a deposit columnar sample. The present invention relates to a piston-type free-fall columnar sampler, buoyancy means equipped with a buoy for generating the buoyancy necessary to rise above the water surface, the detachment means mounted to the buoyancy means, connected to the detachment means and a wire, It remains fixed to the detachment means until it reaches near the surface and the collecting means equipped with a collecting container for collecting the sample while being stuck in the seabed at the lower end and when the sampling is completed in the collecting container, it is necessary for free dropping. And a weight separating means for separating the weight from the collecting means, which has a weight and is connected to the collecting means, to reduce the sampling time of the sediment and collect a high quality sample with less disturbance of the surface sediment. At the same time, due to the miniaturization of equipment, samples can be easily collected even in small ships without marine cranes. |