1.6. Sea Ice and Ice Load

For the China Bohai Sea in the north of China and the north of the China Yellow Sea, because they are in the north and the cold air invades in winter, we see a varying degree of icing phenomenon every year. Though the ice conditions in the China Sea area is not as severe as that in the cold region, there are still years where the ice is heavy. For example, the China Bohai Sea was seriously frozen in February 1936; the coast of Laizhou Bay was frozen for a stretch reaching 30  40 km wide; the accumulation of ice was up to 27 m thick. Under serious ice conditions, offshore oil production facilities can’t normally produce because of supply disruption, and sometimes some of the offshore oil engineering structures will be ...

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