Seismic Site Survey for New Regional Seismic Array Station in Morocco

摘要

A seismic site survey in Morocco was conducted jointly with the Centre National Pour Ia Recherche Scientifique et Technique during January and Febrrary 2005. For three separate locations near Oujda (Site 1), Midelt (Site 2), and Tinerhir (Site), a portable seismic array was deployed. Seismometers were also installed in a tnnnel at an existing seismic station near Midelt (MDT) for comparison. Data from the array at each site were used to determine the characteristics of the seismic bachground noise and the capability of each site to record regional events in Morocco. The logistics and feasibilityof installing a 4-kiiometer aperture array were investigated for each potential site. The noise and event analysis indicate that the southern site south of Tinerhir is far superior to the other two proposed locations. logistically, the southern site is acoeptable for installation and support of an array. Included in the report are detailed logistical, geophysical, and geological investigations at the proposed sites, and the analysis of the seismic noise and event data collected.