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  • New seismic source helps in sub-basalt imaging


    H. Jakubowicz

    Professor Anton Ziolkowski of Edinburgh University in Scotland has recently suggested that, since sound waves travel more easily through thin layers at low frequencies than high frequencies, low-frequency surveys could provide better seismic images in some geological settings. For example, many prospective areas in the Atlantic Margin northwest of the UK are overlain by Cenozoic flood basalts, and these act as sound barriers that prevent clear seismic imaging in deeper formations. However, results from recent field experiments in this area support Professor Ziolkowski’s idea, and show that there is potential for obtaining seismic information on the deep geology by increasing the low frequency energy recorded during data acquisition.

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