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| Format: | Artículo científico |
| Language: | en |
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Universidad Nacional Autónoma de México
2003
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| Online Access: | https://www.redalyc.org/articulo.oa?id=56842205 |
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| _version_ | 1866815582182047744 |
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| author | J. C. Montalvo Arrieta |
| author_facet | J. C. Montalvo Arrieta |
| contents | Observations of strong ground motion at hill sites in Mexico City from recent earthquakes J. C. Montalvo Arrieta E. Reinoso Angulo F. J. Sánchez Sesma Ciencias de la Tierra hill zone Mexico City site effects spectral ratio amplification and wave path Results of seismic response of the stations of the Acelerometric Network of Mexico City located in the hill zone are presented.Seven earthquakes from different seismic sources were analyzed, with magnitudes between 5.9 and 7.3. There is a dependenceof the seismic response at hill sites on earthquake magnitude, azimuth, epicentral distance and depth. Subduction earthquakesconcentrate their energy at low frequencies (<1 Hz), while intraplate earthquakes have frequencies higher than 1 Hz. Wefind two significant types of amplification: regional, for sites located to the southwest hill zone over sites located to the north of thecity, and local. Stations located in the southwest area show higher amplification with respect to the reference station. The spectralratios of stations located in the central and southwest part of the hill zone show relative amplifications up to four times higher thanstations located in the north area of the city for frequencies between 1 and 3 Hz. These local amplifications may be due to thepresence of soft material under the lava flows where the stations are located. 2003 artículo científico 0016-7169 https://www.redalyc.org/articulo.oa?id=56842205 en http://www.redalyc.org/revista.oa?id=568 Geofísica Internacional application/pdf Universidad Nacional Autónoma de México Geofísica Internacional (México) Num.2 Vol.42 |
| format | Artículo científico |
| id | redalyc_56842205 |
| language | en |
| publishDate | 2003 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | Observations of strong ground motion at hill sites in Mexico City from recent earthquakes J. C. Montalvo Arrieta Ciencias de la Tierra hill zone Mexico City site effects spectral ratio amplification and wave path Observations of strong ground motion at hill sites in Mexico City from recent earthquakes J. C. Montalvo Arrieta E. Reinoso Angulo F. J. Sánchez Sesma Ciencias de la Tierra hill zone Mexico City site effects spectral ratio amplification and wave path Results of seismic response of the stations of the Acelerometric Network of Mexico City located in the hill zone are presented.Seven earthquakes from different seismic sources were analyzed, with magnitudes between 5.9 and 7.3. There is a dependenceof the seismic response at hill sites on earthquake magnitude, azimuth, epicentral distance and depth. Subduction earthquakesconcentrate their energy at low frequencies (<1 Hz), while intraplate earthquakes have frequencies higher than 1 Hz. Wefind two significant types of amplification: regional, for sites located to the southwest hill zone over sites located to the north of thecity, and local. Stations located in the southwest area show higher amplification with respect to the reference station. The spectralratios of stations located in the central and southwest part of the hill zone show relative amplifications up to four times higher thanstations located in the north area of the city for frequencies between 1 and 3 Hz. These local amplifications may be due to thepresence of soft material under the lava flows where the stations are located. 2003 artículo científico 0016-7169 https://www.redalyc.org/articulo.oa?id=56842205 en http://www.redalyc.org/revista.oa?id=568 Geofísica Internacional application/pdf Universidad Nacional Autónoma de México Geofísica Internacional (México) Num.2 Vol.42 |
| title | Observations of strong ground motion at hill sites in Mexico City from recent earthquakes |
| topic | Ciencias de la Tierra hill zone Mexico City site effects spectral ratio amplification and wave path |
| url | https://www.redalyc.org/articulo.oa?id=56842205 |