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Dr. Chun-Hsiang Kuo works in the field of engineering seismology, with researches focus on strong ground motion and site effect. I obtained Ph.D. degree from the Institute of Geophysics, National Central University (NCU) in Taiwan in 2009. In the same year, I started to work for the National Center for Research on Earthquake Engineering (NCREE). I was promoted to Research Fellow in 2017. About the research, a measured-based result on site conditions (Vs30) for the free-field stations of Taiwan Strong Motion Instrumentation Program (TSMIP) was proposed and the Engineering Geological Database for TSMIP (http://egdt.ncree.org.tw/) was also opened for public. This result largely improved our understanding on the seismic site conditions in different regions of Taiwan and further enhanced accuracy of strong motion prediction. We, as a team, also use microtremor measurements to study site effect and shallow velocity structures for whole Taiwan. From 2015 to 2018, I joined a SSHAC Level 3 project in Taiwan and further developed a comprehensive site database including various site parameters (Vs30, Z1.0, and Kappa) for free-field TSMIP stations for the advanced PSHA analysis. A Database of Near-Fault Strong Motions with Pulse-like Velocity (http://nfpv.ncree.org.tw/) in 2019, including global and Taiwan near-fault pulse-like strong motion time histories. It has been used by professors, engineers, and students from NCREE and several other universities in Taiwan and other countries for studies of building or structure response when suffering near-fault pulse-like ground motions. 

I moved to Department of Earth Sciences, NCU in August 2020 as an assistant professor. The E-DREaM invited me as a joint appointed Assistant Professor because of my knowledge and experiments on engineering seismology. NCREE also invited me as an adjunct Research Fellow. I was also a adjunct Research Fellow of Eastern Taiwan Earthquake Center (E-TEC).

研究室簡介

　　本研究室近年來已針對臺灣全島主要都會區進行詳細的微地動量測與分析，結合主持人過去在國震中心所完成的全台強震站鑽探與淺部波速調查成果（EGDT資料庫，Kuo et al. 2012），已讓本研究室充分瞭解臺灣本島的淺部速度構造與場址效應。這些研究成果已由國震中心耐震規範小組評估並審酌使用，規範中和地盤分類與場址放大係數的相關規定據此修改為更符合臺灣本土特性，此提案已經規範委員會審議通過提交至內政部營建署審查中。

       就鬆軟層對地震波之影響而言，另一項值得研究的課題為震波放大之非線性效應。在許多研究中均發現，同一鬆軟土層對強地動的放大倍率與弱地動之放大倍率不同，即二者間之關係為非線性的。如何找出此非線性之關係，以便在由已知的弱地動觀測資料預測強地動時，有修正的依據。而井下地震儀陣列之設置正是找出此非線性關係之重要觀測方法（Kuo et al. 2018）。

　　此外，進行地動模擬及預估時，有一項非常重要的問題將獲得解決，即各地區當地的淺層速度構造已有初步瞭解，相關研究成果正在彙整中。經由過去許多研究發現，局部性的場址效應對地動有極大的影響，而局部場址效應多半與淺層速度構造有關，目前對台灣許多局部區域下的淺層速度構造已有初步瞭解，但在臺灣特殊地質條件下，麓山帶至平原地區的轉換帶淺部速度構造變化快速，未來幾年仍需要針對這些轉換帶進行更密集的微地動調查，將更能幫助理解中大規模地震下的表面波生成機制。故本研究室擬利用可攜帶微地動觀測儀陣列，收集各研究區域的微地動資料，並由頻率-波數分析法找出頻散曲線，再由頻散曲線逆推出地下構造，或是搭配微地動單站頻譜比法進行逆推或速度剖面繪製；亦可發展主動震源方法，利用表面波之頻散曲線逆推出地下構造。可對經驗地動預估式與三維地動模擬結果加以修正，更進一步使強地動預估更為準確。