這十幾年來，台灣東部的巨大片麻岩體被認為是傳統的變質帶岩體。有些研究提出變質岩體被偉晶花崗岩切斷或是入侵。但是，越來越多的證據表示片麻岩可能是來自於花岡岩或變質花岡岩。為了驗證花岡岩與變質花岡岩的存在，及找出在台灣東部的變質帶中花岡岩潛在分布，使用甚低頻電磁法(very low-frequency electromagnetic method，以下簡稱VLF-EM )，在台灣東部造山帶，花蓮和平地質區中，佈一條長達19公里、曲折延綿的和平林道測線，以及一條作為對照組、長4.4公里的和平溪測線。

VLF-EM的數據使用一種稱為Fraser濾波法的線性濾波法，以及總體經驗模態分解法(ensemble empirical mode decomposition，或稱EEMD)非線性濾波技巧，以加強訊號以及判斷訊號品質。此外也使用加了集膚深度要素的Karous-Hjelt 濾波法，繪製等效電流密度模型。搭配3D地形協助，可以很清楚地使用等效電流密度模型，標示探勘區域的花岡岩與變質花岡岩的分布。

即使定性模型有不確定性，我們發現的地質意義將提供一個有關於台灣附近的版塊構造的看法──台灣與鄰近琉球島弧系統南端在晚新生代時，與呂宋島弧碰撞之前，是歐亞大陸邊緣的一部分。

本論文已部份發表於Journal of Applied Geophysics (2012), http://dx.doi.org/10.1016/j.jappgeo.2012.06.010

鄧屬予, (2007). 台灣第四紀大地構造,經濟部中央地質調查所特刊, 第18號, 第1-24頁

唐周宜, (2004). 透地雷達測勘之小波與希爾伯特轉換整合分析, 臺灣師範大學地球科學系學位論文

賴以平, (2007). 透地雷達數據之S轉換時頻譜解析與應用, 臺灣師範大學地球科學系學位論文

鄭懌, (2009). 師大地球物理實驗室隨堂講義

邱宇平, 吳詩敏, 曹嘉修, 林郁伶, 劉怡岑, 陳建安, (2011). 臺灣東部和平花岡岩之岩石學研究, 中華民國地球物理學會與中華民國地質學會100年年會暨學術研討會, 第451頁

Beamish, D., (1994). Two-dimensional, regularised inversion of VLF data: Journal of Applied Geophysics, V. 32, p. 357-374.

Beamish, D., (1998). Three-dimensional modeling of VLF data: Journal of Applied Geophysics, V. 39, p. 63-76.

Bendat, J. S. and Piersol, A. G., (1985). Random Data: Analysis and Measurement Procedures, 2nd, John Wiley & Sons, Inc.

Bernard, J., Valla, P., (1991). Groundwater exploration in fissured media with electrical and VLF methods: Geoexploration, V. 27, p. 81-91.

Coney, D.P., (1977). Model studies of the VLF-EM method of geophysical prospecting: Geoexploration , V. 15, p. 19–35.

Fischer, G., Le Quang, B.V., and Muller, I., (1983). VLF ground surveys: a powerful tool for the study of shallow two-dimensional structures: Geophysical Prospecting, V. 31, p. 977-991.

Fraser, D.C., (1969). Contouring of VLF-EM data: Geophysics, V. 34, p. 958-967.

Grant, F.S., West, G.F., (1965). Interpretation theory in applied geophysics: McGraw-Hill, New York.

Griffiths, D. J., (1999). Introduction to electrodynamics, Third edition, p.576

Ho, C.S., (1988). An introduction to the geology of Taiwan: explanatory text of the geological map of Taiwan (second edition). Central Geological Survey, Ministry of Economic Affairs, Taipei, Taiwan.

Huang, N.E., Wu, Z., (2008). A review on Hilbert–Huang transform: the method and its applications on geophysical studies, Reviews of Geophysics, V. 46, doi:10.1029/2007RG000228 RG 2006.

Jeng, Y., Lin, M. J., and Chen, C. S., (2004). A very low frequency-electromagnetic study of the geo-environmental hazardous area in Taiwan: Environmental Geology, V. 46, No. 6-7, p. 784-795.

Jeng, Y., Lin, M. J., Chen, C. S., and Wang, Y. H., (2007). Noise reduction and data recovery for a very low frequency electromagnetic survey using the nonlinear decomposition method: Geophysics, V. 72, No. 5, p. F223–F235, doi:10.1190/1.2752561

Jeng, Y., and Chen, C. S., (2011). A nonlinear method of removing harmonic noise in geophysical data: Nonlinear Processes in Geophysics, V. 18, No. 3, p. 367–379, doi:10.5194/npg-18-367-2011

Jeng, Y., Huang, C. L., Tong, L. T., Lin, M. J., Chen, C. S., Huang, H. H., (2012). Mapping possible subsurface granitic bodies in the northeastern Taiwanmountain belt using the VLF-EM method: Journal of Applied Geophysics, V. 85, p. 25-36.

Jolivet, L., Huchon, P. and Rangin, C., (1990). Tectonic setting of western Pacific marginal basins: Tectonophysics, V. 160, p. 23–47.

Lajoie, J. J. and West, G.. F., (1976). The electromagnetic response of a conductive inhomogeneity in a layered earth: Geophysics, V. 52, p. 1133-1156.

Lin, M. J. and Jeng, Y., (2010). Application of the VLF- EM method with EEMD to the study of a mud volcano in southern Taiwan: Geomorphology, V. 119, No. 1-2, p. 97-110, doi:10.1016/j.geomorph.2010.02.021

Loke, M.H. and Barker, R.D., (1996). Rapid least-squares inversion of apparent resistivity pseudosections by a quasi-Newton method: Geophysical Prospecting, V. 44, p. 131-152.

Monteiro Santos, F.A., Mateus, A. Figueiras, J., Gonçalves, M.A., (2006). Mapping groundwater contamination around a landfill facility using the VLF-EM method – a case study: Journal of Applied Geophysics, V. 60, p. 115-125.

Paterson, N. R. and Ronka, V., (1971). Five years of surveying with the very low frequency electromagnetic method: Geoexploration, V. 9, p. 7-26.

Paál, G.,(1965). Ore prospecting based on VLF-radio signals: Geoexploration, V. 3, p. 139-147.

Phillips, W. J. and Richards, W. E., (1975). A study of the effectiveness of the VLF method for the location of narrow-mineralized fault zone: Geoexploration, V.13, p. 215-226

Pirttijärvi, M., (2004). Karous-Hjelt and Fraser filtering of VLF measurements: manual of the KHFFILT program, Department of Geosciences, University of Oulu, Finland.

Poddar, M., (1982). Very low-frequency electromagnetic response of perfectly conducting half-plane in a layered half-space: Geophysics, V. 47, p. 1059-1067.

Telford, W.M., Geldart, L.P. and Sheriff, R.E., (1990). Applied geophysics (second edition). Cambridge University Press, Cambridge, UK.

Teng, L. S., (1996). Extensional collapse of the northern Taiwan mountain belt: Geology, V. 24, p. 949-952.

Van Dam, R.L., 2012. Landform characterization using geophysics—Recent advances, applications, and emerging tools: Geomorphology, V. 137, p. 57-73, doi:10.1016/j.geomorph.2010.09.005

Verma, O. P. and Gaur, V. K., (1975). Transformation of electromagnetic anomalies brought about by a conducting host rock: Geophysics, V.40, p. 473-489.

Won, I. J., (1980). A wide-band electromagnetic exploration method – some theoretical and experimental results: Geophysics, V.45, p. 928-940.

Wu, Z. and Huang, N.E., (2009). Ensemble empirical mode decomposition: a noise-assisted data analysis method: Advances in Adaptive Data Analysis, V. 1, p. 1–41.

Yen, T. P., (1963). The metamorphic belts within the Tananao Schist terrain of Taiwan: Proceedings of the Geological Society of China, V.6, p. 72-74.

Yui, T. F., Okamoto, K., Usuki, T., Lan, C. Y., Chu, H. T. and Liou, J. G., (2009). Late Triassic–Late Cretaceous accretion/subduction in the Taiwan region along the eastern margin of South China – evidence from zircon SHRIMP dating: International Geology Review, V. 51, Issue 4, p. 304-328, doi: 10.1080/00206810802636369