拖网及深海摄像站位位置与水深的初步校正  

Position and water depth revises for the station of dredge and video equipment

作　　者：武光海[1] 程永寿[2] 刘捷红[1] 李守军[1] 张恺[1] 马维林[1] 张宏[1] 

机构地区：[1]国家海洋局第二海洋研究所 [2]国家海洋信息中心,天津300171

出　　处：《海洋学研究》2008年第3期90-97,共8页Journal of Marine Sciences

基　　金：国家自然科学基金资助项目(40676025);科技部科研院所社会公益研究资助项目(2004DIB3J086);中国大洋矿产资源研究协会资助项目(DY105-01-01-11);大洋矿产资源研究协会“十一五”专项资助项目(DYXM-115-1-01-07)

摘　　要：对在海山富钴结壳调查中拖网取样和深海摄像调查的站位位置和水深的校正方法进行了研究,对其钢缆角度(θ角)等关键参数的选取以及水深校正可靠性的评估进行了分析和讨论,同时还利用MM3海山站位的数据进行了拖网和摄像站位的位置和水深校正,并对其可靠性进行了评估。结果表明:对于拖网站位,对应I至Ⅲ级海况,钢缆θ角分别被确定为15°、20°和25°时,其站位位置和水深校正误差最小,个别存在着较大误差的站位,需通过虚拟水深的验证进行手动校正,以保证校正后数据的可信性;对于摄像站位,当钢缆θ角被确定为25°左右时,虚拟水深和实际校正水深间在±50 m的允许误差范围(此为多波束的允许误差)内时,测站的站位位置和水深校正的效果较好,有超过50%的摄像测站的校正水深在误差允许的范围内。可见该校正方法具有较高的可信度,可基本满足富钴结壳的资源量评估和矿床圈定工作的需要。In this article the necessity of standardized treatment to the Co-rich crusts＇ survey data was briefly introduced and the method of the position and water depth revises of the dredge and video stations was introduced, too. Finally, its using effects were evaluated. The Co-rich crusts（hereafter for crust）are a kind of hydrogenesis sedimental ore deposits. In the beginning,the investigators often used a quadrate iron dredge to sample the crust. The dredge hasn＇t the function of hydrolocation,so the position of the dredge on the sea bottom is replaced by the position of the ship,this made it obvious error in the position location. As the same,deep sea video is also used often,but there is deviation of the logging position and water depth in comparison with the real value, too. So the primal survey data need to be revised,otherwise there will be obvious deviation when these data are used directly in the mountain crust resource evaluation and drawing the line of this kind of deposit. In the need of the standardized treatment to the crusts＇ survey data,the formula of the position revise was deduced and the confirmation of the key parameter wire cable angular was discussed in this article. Then the angular θ was estimated and the reliability of the position and water depth revise was examined by the MX sea mountain which has the precise data of the shallow drill. This revise method was well used in the MM3 mountain and proved that it is necessary to revise the old survey data.

关 键 词：富钴结壳 标准化处理 位置校正 水深校正 可靠性 

分 类 号：P715.1[天文地球—海洋科学]