KSS31M型海洋重力仪阻尼延迟时间修正后对重力测网精度的影响  

Effect of the corrected KSS31M marine gravity-meter's delay-time on the marine gravity measurement precision

作　　者：王秀东[1,2] 王真 王先超 付永涛[3,4] 李成钢 

机构地区：[1]山东科技大学地质科学与工程学院,山东青岛266510 [2]山东中煤物探测量总公司,山东泰安271000 [3]中国科学院海洋研究所海洋地质与环境重点试验室,山东青岛,266071 [4]中国科学院海洋研究所海洋油气研究中心,山东青岛266071 [4]中国科学院海洋研究所海洋油气研究中心,山东青岛266071 [5]中海石油技术检测有限公司,天津塘沽300452

出　　处：《海洋通报》2010年第3期320-323,共4页Marine Science Bulletin

基　　金：国家重点基础研究发展计划(2009CB219401)资助

摘　　要：对KSS31M型海洋重力仪阻尼延迟时间进行了修正,分别用修正前的110s阻尼延迟时间和修正后的60s阻尼延迟时间对南海某工区的重力数据进行了校正和处理,结果表明:用110s阻尼延迟时间对数据进行校正后得到的测量精度在平差前为1.6mGal,平差后为1.0mGal,用60s阻尼延迟时间对数据进行校正后得到的测量精度在平差前为1.4mGal,平差后为0.8mGal,平差前和平差后的测量精度均提高了0.2mGal。此结果证明了利用船只机动转向确定海洋重力仪在测量过程中的实际阻尼延迟时间方法的必要性和实际应用价值。The delay-time of the KSS31M marine gravity-meter was corrected.The gravity data and GPS data from the Northern South China Sea was processed with lag time of 60 s and 110 s respectively.The result indicates that the measurement precision of the network corrected with the delay-time of 110 s is about 1.6 mGal before the adjustment processing and about 1.0 mGal after the adjustment processing.The measurement precision of the network corrected with the delay-time of 60 s is about 1.4 mGal before the adjustment processing and about 0.8 mGal after the adjustment processing.It is obvious that the measurement precisions were improved about 0.2 mGal by the delay-time of 60 s.The result intensively validates that the method named verifying the delay-time of marine gravity-meter by the vessel turn-manoeuvre is necessary and useful.

关 键 词：KSS31M海洋重力仪 阻尼延迟时间 交点差 测网精度 

分 类 号：P716.81[天文地球—海洋科学]