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- ...sources produce detectable signals from deeper reflectors. Very large air compressors are necessary to charge the air guns, which typically fire every 10 sec. In13 KB (2,015 words) - 18:24, 21 January 2022
- ...nes then record the reflection echoes from the subsurface. Simultaneously, compressors will recharge the airgun ready for the next discharge, and the process repe43 KB (6,686 words) - 13:44, 18 March 2019