| 題名: | S-wave velocity structures of the Taipei Basin, Taiwan, using microtremor array measurements |
| 作者: | Huang, Huey-Chu
Wu, Cheng-Feng
Lee, Feng-Mei
Hwang, Ruey-Der |
| 貢獻者: | Dept Geol |
| 關鍵詞: | Taipei Basin
Microtremor array measurement
Frequency-wavenumber (F-K) spectrum method
Surface wave inversion technique |
| 日期: | 2015-04 |
| 上傳時間: | 2015-10-30 13:43:28 (UTC+8) |
| 摘要: | The S-wave velocity structures of the Taipei Basin in Taiwan are investigated using the array records of microtremors at 15 sites. Dispersion curves at these sites are calculated using the frequency-wavenumber (F-K) spectrum method. The S-wave velocity structures in the Taipei Basin are then estimated by employing surface wave inversion technique. Harder strata sites have higher phase velocities than softer sites. If the S-wave velocity of the Tertiary Basement is assumed to be 1000 m/s, then the Quaternary alluvial thicknesses in the Taipei Basin are between about 100 m and 650 m. The thickness of the alluvium gradually increases from the southeast to the northwest. The inversion results are also in good agreement with well-logging data and seismic reflection studies of the Taipei Basin. The study concludes that microtremor array measurement is a useful tool for estimating S-wave velocity structure. (C) 2015 Elsevier Ltd. All rights reserved. |
| 關聯: | JOURNAL OF ASIAN EARTH SCIENCES 卷: 101 頁碼: 1-13 |
| 顯示於類別: | [地質系] 期刊論文
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