Rod-Type Creepmeter  

      We have developed a rod-type creepmeter in 1998. This creepmeter is designed for measuring the relative movement across well-defined active faults on the surface. This rod-type creepmeter is designed by a working group of active tectonics, including:


        Jian-Cheng Lee, Institute of Earth Sciences, Academia Sinica, Taiwan

        Jacques Angelier, Observatoire Océanologique de Villefranche, Géosciences Azur, France

        Fu-Shu Jeng, Dept. Civil Engineering, National Taiwan University

        Hao-Tsu Chu, Central Geological Survey, Taiwan

        Jyr-Ching Hu, Dept. Geosciences, National Taiwan University



The rod-type creepmeter, 5-6 meters long, measures displacements between two anchored piers on the opposite sides across the active fault. The piers were mounted on 60cm ´ 60cm wide concrete bases. While located on the soil surface, an extra 0.5 m deep cavity was dug for each pier and filled with pebbles, concrete, and iron bars, which were implanted more than 1 m deep. The instrument itself is composed of two parallel Invar rods, which are attached to each pier via a universal connector and are supported by the rollers fixed on a U-shaped steel cover-and -support system. The relative movement of two invar rods can be measured by a mechanical dial-gauge sensor. The resolution of the dial-gauge is 0.01 mm with a range of 50 mm. 







Creepmeter CHIH004 was installed across surface breaks of the Chihshang fault on the retaining wall of a water channel near the Chinyuan Village.


Site map of creepmeters and Creep data of the Chihshang Fault, eastern Taiwan

Creep data

    Tapo site

    Chinyuan Site



Lee, J.C., Jeng, F.S., Chu, H.T., Angelier, J. and Hu, J.C., 2000. A rod-type creepmeter for measurement of displacement in active fault zone: Earth, Planets, and Space, 52, 5, 321-328.  [Full Text (PDF) 11.1MB]

Angelier, J., Chu, H.T., Lee, J.C., and Hu, J.C., 2000. Active faulting and earthquake risk: the Chihshang Fault case, Taiwan: Jour. Geodynamics, 29, 151-185.  [Full Text (PDF) 943K]

 Lee, J.C., Angelier, J., Chu, H.T., Hu, J.C., and Jeng, F.S., 2001. Continuous monitoring of an active fault in a plate suture zone: a creepmeter study of the Chihshang active fault, eastern Taiwan, Tectonophysics, 333, 219-240.   [Full Text (PDF) 3.1MB]

Lee, J.C., Chu, H.T., Angelier, J., Hu, J.C., Yu, S.B., Chen, H.Y., Jeng, F.S. Lin, C.H., Rau, R.J., Chow, J.D., Chang, S.H., and Jiang, G.C., 2002. Crustal deformation and Active faulting in relation with seismic hazard: Study of the active Chihshang fault in Longitudinal Valley , eastern Taiwan (in Chinese). Ti-Chih, 21, 2, 31-52. [Full Text (PDF 1.8MB]

Lee, J.C., Angelier, J., Chu, H.T., Hu, J.C., Jeng, F.S. and Rau, R.J., 2003. Active Fault Creep Variations at Chihshang, Taiwan, Revealed by Creepmeter Monitoring, 1998-2001. Journal of Geophysical Research, 108, B11, 2528, doi:10.10129/2003JB002394.  [Full Text (PDF)11.2MB]