摘要
The present study aims mainly at investigat</span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">ing</span></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"> the site effect at the new Luxor city, Egypt, using microtremor measurements. Accordingly, 41</span></span></span></span><span><span><span><span style="font-family:""> </span></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">ambient noise recording</span></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">s</span></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"> were implemented covering the investigated area in a reasonable manner with spacing nearly 1 km between each measurement station. The data were analyzed using Nakamura</span></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">’</span></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">s technique. The results show that;the investigated area exhibits low fundamental frequency values ranging between 0.28 - 0.47 Hz and its corresponding amplification factor values var</span></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">y</span></span></span></span><span><span><span><span style="font-family:""><span style="font-family:Verdana;"> between 2.3 and 6.8. Consequently, the studied site is characterized by the presence of thick soft sediments overlying a hard bed rock. The seismic vulnerability index (</span><i><span style="font-family:Verdana;">Kg</span></i><span style="font-family:Verdana;">) was estimated, relying on the estimated fundamental frequency (</span><i><span style="font-family:Verdana;">F</span></i><sub><span style="font-family:Verdana;">0</span></sub><span style="font-family:Verdana;">) and amplification factor (</span><i><span style="font-family:Verdana;">A</span></i><sub><span style="font-family:Verdana;">0</span></sub><span style="font-family:Verdana;">), through the range between 11 and 95 across the mapped area. The obtained </span><i><span style="font-family:Verdana;">Kg</span></i><span style="font-family:Verdana;"> values were noticed to be compatible with amplification level results. The central part of the investigated area reflects the higher </span><i><span style="font-family:Verdana;">Kg</span></i><span style="font-family:Verdana;"> and </span><i><span style="font-family:Verdana;">A</span></i><sub><span style="font-family:Verdana;">0</span></sub><span style="font-family:Verdana;"> values.
The present study aims mainly at investigat</span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">ing</span></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"> the site effect at the new Luxor city, Egypt, using microtremor measurements. Accordingly, 41</span></span></span></span><span><span><span><span style="font-family:""> </span></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">ambient noise recording</span></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">s</span></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"> were implemented covering the investigated area in a reasonable manner with spacing nearly 1 km between each measurement station. The data were analyzed using Nakamura</span></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">’</span></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">s technique. The results show that;the investigated area exhibits low fundamental frequency values ranging between 0.28 - 0.47 Hz and its corresponding amplification factor values var</span></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">y</span></span></span></span><span><span><span><span style="font-family:""><span style="font-family:Verdana;"> between 2.3 and 6.8. Consequently, the studied site is characterized by the presence of thick soft sediments overlying a hard bed rock. The seismic vulnerability index (</span><i><span style="font-family:Verdana;">Kg</span></i><span style="font-family:Verdana;">) was estimated, relying on the estimated fundamental frequency (</span><i><span style="font-family:Verdana;">F</span></i><sub><span style="font-family:Verdana;">0</span></sub><span style="font-family:Verdana;">) and amplification factor (</span><i><span style="font-family:Verdana;">A</span></i><sub><span style="font-family:Verdana;">0</span></sub><span style="font-family:Verdana;">), through the range between 11 and 95 across the mapped area. The obtained </span><i><span style="font-family:Verdana;">Kg</span></i><span style="font-family:Verdana;"> values were noticed to be compatible with amplification level results. The central part of the investigated area reflects the higher </span><i><span style="font-family:Verdana;">Kg</span></i><span style="font-family:Verdana;"> and </span><i><span style="font-family:Verdana;">A</span></i><sub><span style="font-family:Verdana;">0</span></sub><span style="font-family:Verdana;"> values.
