![]() |
|
以作者查詢圖書館館藏 、以作者查詢臺灣博碩士 、以作者查詢全國書目 、勘誤回報 、線上人數:34 、訪客IP:3.15.21.48
姓名 周昆瑩(Kun-Ying Chou) 查詢紙本館藏 畢業系所 地球物理研究所 論文名稱 利用隨機式震源模型探討蘭陽平原之場址效應
(Using stochastic point source model to study the site effect in Lan-Yang plain)相關論文 檔案 [Endnote RIS 格式]
[Bibtex 格式]
[相關文章]
[文章引用]
[完整記錄]
[館藏目錄]
[檢視]
[下載]
- 本電子論文使用權限為同意立即開放。
- 已達開放權限電子全文僅授權使用者為學術研究之目的,進行個人非營利性質之檢索、閱讀、列印。
- 請遵守中華民國著作權法之相關規定,切勿任意重製、散佈、改作、轉貼、播送,以免觸法。
摘要(中) 本研究主要針對位於蘭陽平原之中央氣象局強震站,利用隨機式震源模型模擬沖積層站不考慮場址效應下之地動加速度,該模擬值可視為在堅硬岩盤上所收到的資料,藉由理論模擬值與觀測值之間的差異來探討場址效應,並與單站頻譜比法、雙站頻譜比法之結果做比較,討論隨機式震源模型應用在場址效應上的可信度。其中,挑選供模擬用之地震事件有1999年10月13日規模5.0、2000年9月10日規模6.2及2002年5月29日規模6.2三者,並利用數個岩盤站所收到的資料來進行模型參數的校準。比較觀測值除以模擬值之頻譜比與單站頻譜比所得之蘭陽平原主頻等值圖,兩者放大主頻的分佈趨勢大致相同,位於平原邊緣之西側河谷、三星鄉及蘇澳鎮的主頻較高,約3~4Hz以上;主頻較低處分佈於平原中心至海邊,約2Hz以下。結果發現,蘭陽平原在低頻率段的放大倍率有由平原邊緣往平原中央靠海處漸增的趨勢,此分佈與基盤面深度變化趨勢相當類似,可推測低頻率段之轉換函數表現出蘭陽平原區域速度及阻抗差異較大之層面所造成的放大效應;且宜蘭市到蘭陽溪出海口連線在各頻率段中皆有放大倍率高區存在。隨機式震源模型所得轉換函數雖在1Hz以下吻合程度較差,但放大倍率的趨勢仍在。本模型對各筆地震之震源簡化為點震源,省略描述各筆地震複雜破裂面的工作,可進一步納入更多的地震事件進行模擬並計算平均之轉換函數,加強描述蘭陽平原場址效應的客觀性與準確性。 摘要(英) The purpose of this study is using stochastic model to analyze the site effect in Lan-Yang plain. We utilized stochastic model to simulate the ground motion in soil site without taking into account the site effect, the simulated data could be considered as the data recorded by rock site. And we study the site effect by comparing observed with simulated data. The three earthquakes selected in this study are magnitude 5.0 at 13 October 1999, magnitude 6.2 at 10 September 2000 and magnitude 6.2 at 29 May 2002. We calibrated the model parameters by comparing rock sites records with simulated data. The distribution of dominant frequency in Lan-Yang plain calculated by stochastic model and H/V technique are almost the same. The dominant frequencies in west valley, Sanshing and Suau are greater than 3 to 4Hz, but in plain center are less than 2Hz. The result shows that the amplification in low frequency band increases from the plain edge to the seashore of plain center, it is quite similar to the depth variation of basement. It shows that the amplification effect at low frequency was caused by the interface with large difference of velocity and impedance. Additionally, there are high amplification district in each frequency band in the area between Yilan city and the outlet of Lan-Yang stream. Although simulated results are not so good at frequency band less than 1Hz, the results still show the trends of amplification. We take advantage of stochastic model which omits description of complicated source to calculate average transfer function with more earthquake events. More events could improve the externalism and accuracy of the site effect description in Lan-Yang plain. 關鍵字(中) ★ 蘭陽平原
★ 頻譜比
★ 隨機式震源模型
★ 場址效應關鍵字(英) ★ Lan-Yang plain
★ spectral ratio
★ stochastic model
★ site effect論文目次 中文摘要...............................i
英文摘要..............................ii
謝誌..................................iv
目錄.................................. v
圖目................................viii
表目.................................xii
第一章 緒論........................... 1
1.1 研究動機與目的.................... 1
1.2 文獻回顧.......................... 2
1.3 內容簡介.......................... 4
第二章 研究區域及使用資料............. 5
2.1 蘭陽平原之地形及地質概況.......... 5
2.2 蘭陽平原之地下構造................ 6
2.3 其他相關研究...................... 8
2.4 使用資料.......................... 9
第三章 研究原理及方法................ 22
3.1 隨機式震源模型(ω平方模型)...... 22
3.2 雙站頻譜比法..................... 23
3.3 單站頻譜比法..................... 24
第四章 研究流程...................... 26
4.1 隨機式震源模型................... 26
4.1.1 模擬流程....................... 26
4.1.2 地震之選擇..................... 27
4.1.3 隨機式震源模型參數............. 27
4.1.4 隨機式震源模型參數之校準....... 28
4.2 單站頻譜比法..................... 30
4.3 雙站頻譜比法..................... 30
第五章 結果與討論.................... 44
5.1 隨機式震源模型之結果............. 44
5.1.1 共振主頻....................... 44
5.1.2 放大倍率....................... 45
5.2 單站頻譜比法之結果............... 46
5.2.1 共振主頻....................... 46
5.2.2 放大倍率....................... 47
5.3 綜合討論......................... 47
第六章 結論.......................... 63
參考文獻............................. 65
附錄A................................ 68
附錄B................................ 71
附錄C................................ 75
附錄D................................ 78
附錄E................................ 86
附錄F................................ 92
附錄G................................ 95
附錄H................................ 98參考文獻 Aki, K., “Scaling law of seismic spectrum”, J. Geophys. Res., 72, 1217-1231, 1967.
Aki, K., “Seismic displacement near a fault”, J. Geophys. Res., 73, 5359-5376, 1968.
Beresnev, I. A., and G. M. Atkinson, “Stochastic finite-fault modeling of ground motions from the 1994 Northridge, California, earthquake. I. Validation on rock sites”, Bull. Seism. Soc. Am., 88, 1392-1401, 1998a.
Boore, D. M., “Stochastic simulation of high-frequency ground motion based on seismological models of the radiated spectra”, Bull. Seism. Soc. Am., 73, 1865-1894, 1983.
Boore, D. M., and W. B. Joyner, “A note on the use of random vibration theory to predict peak amplitude of transient signals”, Bull. Seism. Soc. Am., 74, 2035-2039, 1984.
Boore, D. M., and W. B. Joyner, “Estimation of ground motion at deep-soil sites in eastern North America”, Bull. Seism. Soc. Am., 87, 2167-2185, 1991.
Boore, D. M., SMSIM – Fortran programs for simulating ground motions from earthquakes: version 2.3 – A revision of OFR 96-80-A, U.S. Geol. Surv., 2005.
Borcheret, R. D., “Effect of local geology on ground motion near San Francisco Bay”, Bull. Seism. Soc. Am., 60, 29-61, 1970.
Brune, J. N., “Tectonic stress and the spectra of seismic shear waves from earthquakes”, J. Geophys. Res., 75, 1869-1881, 1970.
Chang, L. S., and Yeh, Y. T., “The Q value of strong ground motions in Taiwan”, Bull. Inst. Earth. Sci., Academia Sinica, 3, 127-148, 1983.
Chen, K. C., T. C. Shin, and J. H. Wang, “Estimates of coda Q in Taiwan”, Proc. Geol. Soc. China, 32, 339-353, 1989.
Haskell, N. A., “Elastic displacements in the near-field of a propagating fault”, Bull. Seism. Soc. Am., 59, 865-908, 1969.
Lee, C. T., C. T. Cheng, C. W. Liao, and Y. B. Tsai, “Site classification of Taiwan free-field strong-motion stations”, Bull. Seism. Soc. Am., 91, 1283-1297, 2001.
Lermo, J. and F. J. Chavez-Garcia, “Site effect evaluation using spectral ratio with only one station”, Bull. Seism. Soc. Am., 83, 1573-1594, 1993.
Nakamura, Y., A method for dynamic characteristics estimation of 85 subsurface using microtremor on the ground surface, QR of RTR1 30, 1 , February, 25-33, 1989.
Sokolov, V. Yu, “Spectral parameters of ground motion in different region: comparison of empirical models”, Soil Dyn. Earthquake Eng., 19, 173-181, 2000.
Sokolov, V. Yu, C. H. Loh, M. EERI, and K. L. Wen, “Evaluation of generalized site response function for typical soil classes(B, C, and D) in Taiwan”, Earthquake Spectra, 20, 1279-1316, 2004.
Tsai, Y. B., and C. C. Feng, “Correlation between microearthquakes and geology fault in the Hsintien-Ilan area, Taiwan”, Petrol. Geol. Taiwan, 12, 149-167, 1975.
Wen, K. L., and Y. T. Yen, “Seismic velocity beneath the SMART-1 array”, Bull. Inst. Earth. Sci., Academia Sinica, 16, 19-27, 1979.
Yeh, Y. H., C. H. Lin, and S. W. Roecker, “A study of upper crustal structures beneath northeastern Taiwan: possible evidence of the western extension of Okinawa trough”, Proc. Geol. Soc. China, 32, 139-156, 1989.
Yu, S. B., and Y. B. Tsai, “Geomagnetic anomalies of the Ilan plain”, Taiwan, Petrol. Geol. Taiwan, 16, 19-27, 1979.
江新春,「宜蘭平原之震測」,礦業技術,第14卷,第6期,215-221,1976。
林哲民,「利用接收函數法推估蘭陽平原淺層速度構造」,國立中央大學,碩士論文,2003。
孫合慶,「一九九四年南澳地震的強地動模擬」,國立中央大學,碩士論文,1999。
郭俊翔,「探討不同地質區強震站之淺層S波速度構造」,國立中央大學,碩士論文,2004。
郭隆晨、余水倍,「宜蘭平原之伸張變形」,第五屆台灣地區地球物理研討會論文集,633-641,1994。
陳俊德,「利用有限斷層法探討台北盆地之場址效應」,國立中央大學,碩士論文,2006。
黃有志,「蘭陽平原場址效應及淺層S波速度構造」,國立中央大學,碩士論文,2003。
詹新甫,「宜蘭地區第三紀之地質」,礦業技術,第14卷,第7期,252-257,1976。
溫國樑、葉永田,「羅東大型強地震儀陣列區之地下構造」,中央研究院地球科學研究所,1983。
蔡義本,「宜蘭地區之地震研究」,礦業技術,第14卷,154-161,1976。
謝宏灝,「利用井下地震儀陣列探討單站頻譜比法之應用」,國立中央大學,碩士論文,2001。
富國技術工程股份有限公司,宜蘭縣強震儀測站地質鑽探調查工程紀實報告書,2002。
中央氣象局全球資訊網。2007年9月9日,取自http://www.cwb.gov.tw/指導教授 溫國樑(Kuo-Liang Wen) 審核日期 2007-9-27 推文 plurk
funp
live
udn
HD
myshare
netvibes
friend
youpush
delicious
baidu
網路書籤 Google bookmarks
del.icio.us
hemidemi
myshare