這篇論文全面研究了利用微動技術評估台灣屏東地區的土壤特性和地震場址效應。屏東縣由於地質結構主要由軟質沖積層和多樣的土壤類型組成，因此極易受到地震活動的影響。傳統的破壞性土壤檢測方法，如標準貫入試驗（SPT）、圓錐貫入試驗（CPT）及鑽孔，雖然常用於評估土壤特性，但這些方法在人口密集的城市地區存在挑戰，因其侵入性大，促使人們需求非破壞性微動方法。

微動方法，如水平至垂直頻譜比技術，相較於標準貫入試驗（SPT）和圓錐貫入試驗（CPT）等傳統地質技術方法具有多個優勢，包括非破壞性、成本效益高、快速高效、提供動態土壤特性及適用於多種環境。

在研究的第一部分，通過微動測量獲得了該地點的水平至垂直頻譜比(H/V)p。隨後，我們使用公式?=??/4?轉換了(H/V)p，以獲得(H/V)p深度剖面。然後，我們評估了(H/V)p與SPT-N值之間的關係。論文展示了地面脆弱性潛力的地圖，整合K_g結果以識別地震引發損害的高風險區域。接著，我們使用NCEER方法確定了土層的液化潛能指數(LPI)。最後，根據(H/V)p值，我們建立了一個指數(F)_A來評估土壤液化潛能。

研究結果驗證了微動分析用於描繪地方性放大效應和地震脆弱性的適用性，為改進區域地震危害模型和提高抗災能力策略提供了關鍵數據。本研究強調了在發展堅固的地震風險緩解策略中，精確評估土壤特性和地震場址效應的重要性。

This thesis presents a comprehensive study on the assessment of soil characteristics and seismic site effects in Pingtung, Taiwan, using microtremor-based techniques. Pingtung County is highly susceptible to seismic activities due to its geological composition, which predominantly consists of soft alluvial deposits with varied soil types. Traditional destructive geotechnical methods, such as Standard Penetration Test (SPT), Cone Penetration Test (CPT), and borehole drilling, are commonly used to assess soil properties. However, these methods pose challenges in densely populated urban areas due to their invasive nature, prompting the need for non-destructive microtremor methodologies.
Microtremor methods, such as the Horizontal-to-Vertical Spectral Ratio technique, offer several advantages over traditional geotechnical methods like the Standard Penetration Test (SPT) and Cone Penetration Test (CPT). These advantages include non-destructiveness, cost-effectiveness, speed and efficiency, provision of dynamic soil properties, and applicability in diverse environments.
In the first part of the study, obtained the (H/V)p of the site through microtremor measurements. Then, we transformed the (H/V)p using the equation ?=??/4? to obtain the (H/V)p-depth profile. Then evaluated the relationship between (H/V)p and the SPT-N value. This thesis present maps of ground vulnerability potential, integrating Kg results to identify high-risk areas for seismic-induced damage. Subsequently, we used the NCEER method to determine the liquefaction potential index (LPI) of the soil layers. Finally, based on the (H/V)p values, we established an index (F)_A to assess the soil liquefaction potential.
The findings validate the application of microtremor analysis for delineating local amplification effects and seismic vulnerabilities, offering crucial data for improving regional seismic hazard models and resilience strategies. This study underscores the importance of precise assessments of soil properties and seismic site effects in developing robust seismic risk mitigation strategies.

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