British Geological Survey (BGS) Geophysical Survey 1969/7: North Irish Sea (11/10/1969 to 28/10/1969)

Report: Tully, MC. 1970. North Channel Irish Sea Cruise Report. MGU Project 69/07. (IGS Report No. 10) Navigation: Decca Mk 12 Main Chain. Equipment: EG&G Seismic Profiling: Two sparkarrays were used firing together at 2500J and 500J respectively at just over once per second. The two arrays were used to give a greater frequency spectrum. KH Transit Sonar: Only used in latter part of the survey as the main area had been covered previously. Elsec Proton Magnetometer. MS 32 Echo-Sounder. La Coste and Romberg Air-Sea Gravity Meter. See also IGS report 71/19.

报告：图利，M.C. 1970. 北海峡爱尔兰海巡航报告。MGU 项目 69/07。（IGS 报告 No. 10）导航：德卡 Mk 12 主链。设备：EG&G 地震剖面测量：使用两个火花阵列，分别以每秒超过一次的频率发射 2500J 和 500J 的能量。这两个阵列被用于提供更宽的频率谱。KH 迁移声纳：仅在调查的后期部分使用，因为主要区域已被先前覆盖。Elsec 质子磁力仪。MS 32 回声测深仪。La Coste 和 Romberg 空气-海洋重力仪。参见 IGS 报告 71/19。