| Abstract: | The strong-motion accelerograms from the Loma Prieta earthquake are analyzed for their long-period content in order to obtain a clearer picture of the long-period wave propogation details. Shear waves having periods in the 3.5 to 4 sec, and 5 to 7 sec ranges travel across four groups of stations with satisfactory coherency. Displacement accuracies are of the order of 0.5 cm for most of this data, with signal amplitudes an order of magnitude higher than the noise. Resonances associated with shear waves of 1.5 sec period are responsible for about 3/4 of the differential displacement necessary to unseat the 15 m section of the Bay Bridge. |
| Genre: | Article |
| ProdID: | 70015959 |
| Citation Author: | Brady, A. Gerald |
| Citation Contributing Office: | |
| Citation Datum: | |
| Citation Day: | |
| Citation Edition: | |
| Citation Editor: | |
| Citation End Page: | 288 |
| Citation Issue: | 796 |
| Citation Keywords: | |
| Citation Language: | English |
| Citation Larger Work Title: | NIST Special Publication |
| Citation LatN: | |
| Citation LatS: | |
| Citation LonE: | |
| Citation LonW: | |
| Citation Month: | |
| Citation No Pagination: | |
| Citation Number Of Pages: | 6 |
| Citation Online Only Flag: | |
| Citation Phsyical Description: | |
| Citation Projection: | |
| Citation Public Comments: | |
| Citation Publisher: | |
| Citation Series: | |
| Citation Series Code: | |
| Citation Series Number: | |
| Citation Search Results Text: | Initial overview of the San Francisco Bay and Santa Cruz mountains ground motion; 1990; Article; Journal; NIST Special Publication; Brady, A. Gerald |
| Citation Start Page: | 283 |
| Citation Volume: | |
| Citation Year: | 1990 |
| Type: | citation/reference |
| Text: | Initial overview of the San Francisco Bay and Santa Cruz mountains ground motion; 1990; Article; Journal; NIST Special Publication; Brady, A. Gerald |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Mon, 1 Jan 1990 00:00 -0600 |
| Publisher: | |
