查詢結果分析
相關文獻
- S-Wave Attenuation Structure in the Taiwan Area and its Correlation to Seismicity
- Qp Structure in the Taiwan Area and Its Correlation to Seismicity
- 臺灣地區A型肝炎流行之演變與疫苗的成效
- HLA DQA1 Genotyping of Chinese in Taiwan by PCR-RFLP
- 臺灣地區食品消費與通路調查系統之運用--以茶類飲料為例
- 臺灣地區大學出版社現況調查與發展模式探析(上)
- 臺灣地區都市災害問題之分析
- 臺灣地區煤業政策之執行及成效
- 臺灣地區石材業的展望
- 臺灣地區煤礦與煤商的互動(日據中期以前)
頁籤選單縮合
題名 | S-Wave Attenuation Structure in the Taiwan Area and its Correlation to Seismicity=臺灣地區S波衰減構造及其與地震活動度之關係 |
---|---|
作 者 | 陳光榮; | 書刊名 | Terrestrial, Atmospheric and Oceanic Sciences |
卷期 | 9:1 1998.03[民87.03] |
頁次 | 頁97-118 |
分類號 | 351.249232 |
關鍵詞 | 臺灣地區; S波衰減構造; 地震活動度; Q structure; Attenuation time value; Seismicity; |
語文 | 英文(English) |
英文摘要 | S-wave amplitude data from the Taiwan Telemetered Seismographic Network (TTSN) and the Central Weather Bureau Seismographic Network (CWBSN) are used in a tomographical inversion for a three-dimensional S-wave attenuation structure beneath the Taiwan area. The data consist of three-dimensional, digital seismograms of 137 earthquakes with magnitudes between 3.0 and 5.0. The S-wave attenuation structure is obtained through the use of the damped least-squares method from attenuation time value (t*) and travel times. Attenuation time value is calculated by using the spectral decay method under the assumption that t* is independent of frequency. S-wave spectra are corrected for a ω□ source spectrum model. The frequencies of instrument response above 25 Hz or below 4 Hz usually have large uncertainty. Therefore, the least-squares line fitting is performed in the frequency band of 4 to 25 Hz. The results here show that the distribution pattern of the Q□ values in the Taiwan area correlates well with seismicity. In the upper crust (depths of between 0 to 15 km), the region of lower Q□ area correlates with higher seismicity. However, in the lower crust and upper mantle (15 to 75 kin), the area of higher seismicity correlates with the regions of higher Q□ values. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。