Microseism and microtremor analyses over an oilfield in Abu Dhabi - Implications for cyclone and hydrocarbon detection

M. Y. Ali, K. A. Berteussen, J. Small, O. Pahlevi

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The characteristics of background seismic noise over an onshore carbonate oilfield in Abu Dhabi, UAE, have been investigated by means of spectral amplitude and array analysis within frequency range of 0.17-10 Hz. The study reveals a strong correlation of seismic noise spectral amplitude with meteorological and anthropogenic noises. In the frequency range of 0.17-1 Hz, the dominant feature is the double frequency peak of microseism generated by oceanic storms in the Indian Ocean. We observed that the strongest spectral amplitude of double-frequency microseism occurs when cyclone Gonu was present over the Arabian Sea and battering the coast of Oman. A narrow-band of microtremor in the range of 2.5-2.8 Hz is present in all locations. The microtremor signal has no clear correlation with the microseism signals. Using arrays of 3-components broadband instruments, we are able to determine the apparent velocities and the azimuth of the wave fronts of the recorded microtremor events. The results indicate that the observed signals are most likely due to some type of surface waves with the azimuth to the source pointing towards the nearest coastline in the area (the Arabian Gulf).

Original languageBritish English
Title of host publication71st European Association of Geoscientists and Engineers Conference and Exhibition 2009
Subtitle of host publicationBalancing Global Resources. Incorporating SPE EUROPEC 2009
Pages2136-2140
Number of pages5
StatePublished - 2009
Event71st European Association of Geoscientists and Engineers Conference and Exhibition 2009 - Amsterdam, Netherlands
Duration: 8 Jun 200911 Jun 2009

Publication series

Name71st European Association of Geoscientists and Engineers Conference and Exhibition 2009: Balancing Global Resources. Incorporating SPE EUROPEC 2009
Volume4

Conference

Conference71st European Association of Geoscientists and Engineers Conference and Exhibition 2009
Country/TerritoryNetherlands
CityAmsterdam
Period8/06/0911/06/09

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