隨著時代推進，以文化資產豐富而成為直轄市的台南市，在文化遺跡保存上較其他地方更具重要性。台南自十七世紀起經歷了荷蘭、鄭氏、滿清與日治統治，其中皆留下許多重要的構造物，但隨著都市開發，大部分在地表上之構造物被拆除，只剩其地下部分留存於現址。本研究使用透地雷達進行地下遺址的調查，以透地雷達圖徵判釋與訊號頻譜分析等方式，判定地下遺構之所在及所用材料的種類，也藉由開挖試掘驗證了透地雷達在初步探測之適用性以及頻譜分析之準確性。
其次，在2016年0206美濃地震時，台南市有多處產生土壤液化現象，土壤液化乃是地震力將原有沉積完好的地層加以擾動並使之噴出地表。因此土壤液化區受擾動的地層大多是地震時產生液化的位置，本研究乃以台南市在0206地震發生土壤液化的區域作為調查對象，進行透地雷達探測，由透地雷達的反射圖徵，可以明確地發現地層擾動的現象，再與現地噴砂紀錄比對，確定透地雷達應可用來判定地層是否曾經發生液化的良好探測設備。
最後，台南鐵路地下化工程是近年來台南市最重大的公共工程，由於工程縱貫台南市，工程施工可能會造成臨地地層受擾動，因此本研究乃以毗鄰台南鐵路地下化工程的一段社區道路長約81公尺，自2019年6月到2020年5月之間定期進行社區道路鋪面下地層的透地雷達檢測，擬由累積長期探測結果監測毗鄰鐵路地下化工程的道路下方地層的變動。由於該社區道路鋪面於2019年11月發生明顯龜裂，參照2019年6月到2020年2月該處透地雷達圖徵，發現道路龜裂處下方的地層擾動範圍是逐月擴大，因此可以判定道路鋪面之龜裂乃是因為其下方地層逐月受擾動掏空所致。

With the advance of the times, Tainan City, which has become a municipality directly under the Central Government with abundant cultural assets, is more important in preserving cultural relics than elsewhere. Tainan has experienced the rule of the Netherlands, Zheng, Manchu and Japanese rulesince in the 17th century, all of which have left many important structures, but with urban development, most of the structures on the surface have been dismantled, leaving only the underground part of it remaining in the present site. This study uses the ground penetrating radar to investigate the underground sites, to determine the location of the subsurface ruins and the type of materials used by means of the patterns of the ground penetrating radar and the spectrum analysis of the signal, and also to verify the applicability of the ground penetrating radar in the preliminary detection and the accuracy of spectrum analysis.
Secondly, this study also probes the ground disturbance caused by soil liquefaction. The Meinong Earthquake on February 6, 2016 caused soil liquefaction in many areas of Tainan City. In soil liquefaction, the seismic force disturbs the original deposited ground, and the liquefied soils spray out of the ground. Therefore, the disturbed grounds are located beneath the soil liquefaction ground patterns during the earthquake. In this study, the soil liquefaction occurred in Tainan City in the 0206 earthquake were taken as the study sites. The signal reflection pattern of GPR clearly shows the formation disturbance. Then, compared to the record of the on-site sand blow, the GPR is a good detection equipment to determine whether the ground has liquefied.
This study evaluates the ground changes, including the eroded caves and ground disturbance, by the GPR. The study of eroded caves is firstly introduced. A 81-m long road in a community next to the construction site of the Tainan Underground Railway Project is selected. From June 2019 to June 2020, periodical GPR detections were conducted to detect the ground change below the pavement of community roads. Obvious road pavement cracking was visible in November 2019. The GPR pattern from June 2019 to February 2020 verified that the size of ground erosion beneath the pavement increases and is the main reason to crack the pavement.

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