跳到主要內容

臺灣博碩士論文加值系統

(18.97.14.85) 您好!臺灣時間:2024/12/14 03:09
字體大小: 字級放大   字級縮小   預設字形  
回查詢結果 :::

詳目顯示

我願授權國圖
: 
twitterline
研究生:王文龍
研究生(外文):Wang, Wen-Lung
論文名稱:菲律賓海盆區之表面波頻散特性研究
論文名稱(外文):Study on Surface Wave Dispersion Characteristics in the Philippine Sea Basin
指導教授:余貴坤余貴坤引用關係
指導教授(外文):Yu Guey-Kuen
學位類別:碩士
校院名稱:國立中央大學
系所名稱:地球物理學系
學門:自然科學學門
學類:地球科學學類
論文種類:學術論文
論文出版年:1997
畢業學年度:85
語文別:中文
論文頁數:85
中文關鍵詞:純路徑法單值分解法頻散
外文關鍵詞:pure-path methodsingle-value decomposition methoddispersion
相關次數:
  • 被引用被引用:0
  • 點閱點閱:108
  • 評分評分:
  • 下載下載:0
  • 收藏至我的研究室書目清單書目收藏:1
本研究利用單站法分析通過菲律賓海盆之123條雷利波波徑在週期20秒
至100秒與108條洛夫波波徑在週期28秒至100秒的群速與相速,並以緯度
、經度各3.4°將菲律賓海盆及其周圍劃分為67個區塊,應用純路徑法採
用單值分解法(single-value decomposition method)逆推技巧計算各區
塊的群速與相速頻散,並考慮區塊間變化為二次微分曲度的關係,進而瞭
解菲律賓海盆之速度在不同週期之速度側向分佈。 比較雷利波與洛
夫波群速、相速的分析結果,發現相速的解析度比群速高。且由於波徑分
布不十分均勻的關係,使洛夫波的解析度比雷利波稍差,但洛夫波卻較能
反應高?
Study on Surface Wave Dispersion Characteristics in the
Philippine Sea BasinWen-Lung WangAbstract In this study, the
group and phase velocities along 123 Rayleigh-wave paths and 108
Love-wave paths have been analyzed at the periods from 20 to 100
seconds for Rayleigh waves and from 28 to 100 seconds for Love
waves, respectively, by using the single-station method. The
Philippine Sea Basin and surrounding area are divided into 67
blocks with size of 3.4°×3.4°in latitude and longitude. The
regionalized group and phase velocities for each block are
determined by the pure-path method with single-valu Comparing
the results of Rayleigh-wave and Love-wave group and phase
velocities, we find that the resolution of phase velocities is
better than that of group velocities. Resolution of Love waves
is also slightly less than that of Rayleigh waves because of the
uneven path coverages. However, Love waves may better reflect
the variation of high heat flow, geomorphologic features and
geological ages than Rayleigh waves. Although the variation
of group velocity in this study, are similar to the results of
some previous studies which divided the Philippine Sea Basin
into several subregions based on geomorphologic features and
geological ages, this study provides more detailed velocity
variation including group and phase velocities in this area. The
lateral variation of velocities in the Philippine Sea Basin are
generally demarcated by the Palau-Kyushu Ridge. Velocities are
highest in the West Philippine Basin and decreas From this
study, we find that the patterns of regionalized velocity
distribution become very simple for periods longer than 70
seconds, suggesting that the lateral variation of velocities in
upper mantle of the whole Philippine Sea Basin at the depth
below 100 km may not be so obvious.

QRCODE
 
 
 
 
 
                                                                                                                                                                                                                                                                                                                                                                                                               
第一頁 上一頁 下一頁 最後一頁 top