The first microearthquake recording in Iraq |
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| Authors: | Sahil A Alsinawi Isam S Banno |
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| Institution: | 1. Department of Geology, The University of Baghdad, BaghdadIraq;2. National Centre for Engineering and Architectural Consultancy, BaghdadIraq |
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| Abstract: | A reconnaissance survey of the microearthquake activity in Iraq has been carried out during the period from June 1974 to June 1975. It intends to establish where and how often microearthquakes occur, and the level of the microseismic background in Iraq. It is also expected to help in choosing seismically suitable sites for the proposed seismological observatory of Iraq. p]Forty-two stations in thirteen zones distributed in different tectonic provinces, were occupied for 180 hours at intervals of time of up to ten hours.The number of actual microearthquakes recorded was relatively small. Their predominant frequency falls in the range of 0.4–3.0 Hz, for the three components. It was also noticed that the bulk of events have a duration of 100 seconds. Although some correlation was observed between the micro- and macroactivity in general, the microseismic background was high in Ga'ara area where no macroactivity was ever registered. |
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