大洋底质调查钢丝绳的倾斜校正

Inclination Correction for Wire Length in Ocean Bottom Soil Sampling

根据“东方红 2”调查船 3次大洋底质调查获得的实放钢丝绳长度、钢丝绳倾斜角度、船舶漂移速度等数 1 0个实测数据 ,通过统计分析得到了放钢丝绳长度与钢丝绳倾斜角度之间的经验关系公式。依据该经验公式进行倾斜校正比用余弦法进行校正少放钢丝绳数百至一千多米。该公式适用条件 :水深 2 0 0 0～ 6 0 0 0 m,钢丝绳倾角 0～ 5

Through analyzing the data on wire length, wire inclination angle and ship drift speed collected in several ocean bottom soil sampling cruises by R/V 'Dong Fang Hong 2', Ocean University of China, an empirical formula for the inclination correction for wire length is established. Compared with the cosine correction method, the wire discharge required by this formula is 100～1 000 meters less. This formula is valid for water depths between 2 000 and 6 000 meters, and inclination angles between 0° and 55°.