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1976年,中国科学院南海海洋研究所与国家海洋局南海分局共同协作使用“向阳红”五号海洋调查船,利用西德GSS-2型海洋重力仪和我国的CHHK-1型核子旋进式磁力仪,在南海珠江口外海域(北纬22°—17°、东经113°50′—115°10′),进行约3000公里的海洋重力、磁力和测深。设计的测线方向为南北向,测线距为10海里。 此后,中国科学院南海海洋研究所使用“实验”1号海洋调查船,利用国产ZY-1型海洋重力仪和CHHK-2型核子旋进式磁力仪,在南海中部海域(北纬17°—12°、东经
In 1976, the South China Sea Institute of Oceanology of the Chinese Academy of Sciences and the South China Sea Branch of the State Oceanic Administration jointly used the “Xiangyangghong” No. 5 marine survey vessel. Using the German GSS-2 marine gravimeter and China’s CHHK-1 nuclear precession magnetic force It conducted about 3,000 km of ocean gravity, magnetism and sounding in the waters off the Pearl River estuary of the South China Sea (latitude 22o-17o and 113o 50’-115o 10 o East longitude). The design of the line direction for the north-south, measuring line distance of 10 nm. Since then, the South China Sea Institute of Oceanology, Chinese Academy of Sciences, using the “experimental” No. 1 marine survey vessel, the use of domestic ZY-1 ocean gravimeter and CHHK-2 nuclear precession magnetometer in the South China Sea in the central waters (latitude 17 ° -12 ° East longitude