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The Arctic International Voyage JASMInE plans to simulate the floating ice area test with the seabed
Date：2021-01-12
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Recently, Dr. Niu Xiongwei from the Undersea Science Laboratory and others conducted the experiment with the base pool to simulate the detection process of OBS (undersea seismograph) in polar floating ice area at the Zhoushan Base of SIO.
The experiment simulated practical problems such as OBS power loss in low temperature environment and searching for OBS in dense floating ice area. A total of 120 ice cubes were used to cover the entire pool. The test results show that: in the low temperature environment of ice-water mixture (about 0 ˚C) and in the air (about -2 ˚C to 3 ˚C), the power loss does not increase significantly; in the case of densely covered floating ice, when the ice is thin (about 0.16 m), the OBS light can pass through the ice layer and can be seen by the naked eye at close range, but when the ice layer is thick (about 0.32 m), the OBS light cannot be searched with the naked eye; OBS's floating rate is relatively slow, it is in a lying attitude in the process of floating, and the equipment is not basically damaged after collision with ice.
This experiment is the preparatory work for the upcoming China Arctic International Open Voyage JASMInE plan. Considering that the field operation environment in Arctic is more severe, the research team will continue to conduct multiple natural simulation tests after the pool test to ensure the smooth progress of the voyage.
