Abstract: Disclosed is a sample collection apparatus. The sample collection apparatus relates to a sample collection apparatus configured to be capable of stably collecting sediment from a seabed without disturbing the same and to be capable of easily separating and transporting a box itself containing a sample from the sample collection apparatus. Briefly, the sample collection apparatus includes a frame section, a vertical operation section, and a rotary operation section.

Abstract: The present invention relates to a bottom sampler comprising, a cable connecting plate, an outer fixing plate disposed at a lower side of the cable connecting plate, a sample barrel guide extending downwards from the outer fixing plate, and a sample barrel configured to have a sediment permeation prevention plate mounted at an outer peripheral end, and provided with a valve at opposite ends, the valve connected to a guide rod pivotally coupled to a first end of a lever operating arm, wherein the valve is closed depending on the pivoting of the lever operating arm when a seabed sample is introduced into the sample barrel to seal an inner part thereof. Accordingly, seabed samples such as gas-filled sediments can be collected and analyzed without pressure leakage.

Abstract: A submarine gas-leakage monitoring system for long-term detection of gas and a method of operating the same are disclosed. The submarine gas-leakage monitoring system includes: a buoy equipped with a satellite communication unit to transmit acquired data to a satellite or to receive a command for activation or inactivation of a first submarine sensor from the satellite when the buoy is raised to float on the seawater surface; a seabed observation unit located close to a seabed, the seabed observation unit acquiring and storing information about gas leakage from the seabed and controlling the buoy such that the buoy is raised or lowered; and a signal cable equipped with the first submarine sensor that detects migration or diffusion of leaked gas and connected between the buoy and the seabed observation unit to allow a signal transmission between the buoy and the seabed observation unit.

Abstract: Disclosed is a sample collection apparatus. The sample collection apparatus relates to a sample collection apparatus configured to be capable of stably collecting sediment from a seabed without disturbing the same and to be capable of easily separating and transporting a box itself containing a sample from the sample collection apparatus. Briefly, the sample collection apparatus includes a frame section, a vertical operation section, and a rotary operation section.

Abstract: A submarine gas-leakage monitoring system for long-term detection of gas and a method of operating the same are disclosed. The submarine gas-leakage monitoring system includes: a buoy equipped with a satellite communication unit to transmit acquired data to a satellite or to receive a command for activation or inactivation of a first submarine sensor from the satellite when the buoy is raised to float on the seawater surface; a seabed observation unit located close to a seabed, the seabed observation unit acquiring and storing information about gas leakage from the seabed and controlling the buoy such that the buoy is raised or lowered; and a signal cable equipped with the first submarine sensor that detects migration or diffusion of leaked gas and connected between the buoy and the seabed observation unit to allow a signal transmission between the buoy and the seabed observation unit.

Abstract: Provided is an apparatus for collecting marine deposits. The apparatus includes: a piston corer for collecting a deep part of marine deposits; a corer for collecting a surface part of marine deposits; and a trigger body connecting the corer for collecting a surface part of marine deposits and the piston corer for collecting a deep part of marine deposits to each other while being maintained at a laterally set interval. The apparatus for collecting marine deposits can greatly save costs consumed to collect marine deposits and increase accuracy of collecting the marine deposits.

Abstract: Provided is an apparatus for collecting marine deposits.