Jean-Philippe Avouac photoJean-Philippe Avouac Professor of Geology:Director of the Tectonics Observatory:CaltechCaltech logo


Quantitative geomorphic techniques in Active Tectonics

* Modeling fault scarp and terrace riser degradation to infer age and rate of tectonic processes [Avouac, 1993, Avouac et Peltzer, 1993].

* Using fluvial terraces to infer vertical deformation and rate of thrusting at front of mountain belts [Avouac et al., 1993 ; Lavé et Avouac, 2000; Daeron, et al, 2007; Bernard, et al., 2007; Simoes, et al., 2007a; Simoes, et al., 2007b] . See fig. 1 & 2.


                                    Figure 1 - Using fluvial terrace to infer fold growth


                                    Figure 2 - Folded fluvial terraces along Bagmati river and shortening rate across the MFT

·        Using DEM to infer uplift and erosion rates [Hurtrez et al., 1999].

·        Determination of river incision using hydrological parameters [Lavé and Avouac, 2001; Poisson and Avouac, 2001]. See fig 3.


                        Figure 3 - Incision rates across the Himalaya of central Nepal

·        Geomorphic record of co-seismic deformation, testing the characteristic slip model [Klinger et al., 2000b].

·        Determination of slip rate along the Dead Sea fault from offset geomorphic features [Klinger et al., 2000a].

·        Determining crustal extension and subsidence across the Asal Rift from the deformation of the Fieale volcano [De Chabalier and Avouac, 1994].

        Science cover

·        Slip rate on the Pallatanga fault (Ecuador) from offset glacial morphology [Winter et al., 1993] .

My main contributions on the subject :

Avouac, J.P., Analysis of scarp profiles: Evaluation of errors in morphologic dating, J. Geophys. Res., 98, 6745-6754, 1993.

Avouac, J.P., G. Peltzer, Active tectonics in southern Xinjiang, China: Analysis of terrace riser and normal fault scarp degradation along the Hotan-Qira Fault system,, J. Geophys. Res., 98, 21,773-21,807, 1993.

Avouac, J.P., P. Tapponnier, M. Bai, H. You and G. Wang, Active thrusting and folding along the northeastern Tien Shan and late Cenozoic rotation of Tarim with respect to Dzungaria and Kazakhstan, J. Geophys. Res., 98, 6755-6804, 1993.

Bernard S., J.P. Avouac, S. Dominguez andM. Simoes, Kinematics of fault-related folding from sandbox experiments, Journal of Geophysical Research, 112, B03S12, doi: 10.1029/2005JB004148, 2007 .  [PDF]

Daeron, M., Avouac, J. P., Charreau, J., and Dominguez, S., Modeling the shortening history of a fault-tip fold using structural and geomorphic records of deformation, Journal of Geophysical Research, 112, B03S13, doi: 10.1029/1006JB004460, 2007.  [PDF]

De Chabalier J.B. and J.P. Avouac, Kinematics of the Asal rift (Djibouti) determined from the deformation of Fieale volcano, Science, Vol. 265, 5179, 1677-1681, 1994. [PDF]

Hurtrez, J.E., F. Lucazeau, Lavé J., and J.P. Avouac, Investigation of the relationship between basin morphology, tectonic uplift and denudation from the study of an active fold belt in the Siwalik Hills (Central Nepal), J. Geophys. Res., 104, 12,779-12,796, 1999. [PDF]

Klinger , Y., J.P. Avouac , N. Abou Karaki, L. Dorbath, D. Bourles, J.L. Reyss, Slip-rate on the Dead Sea transform fault in northern Araba valley (Jordan), Geophys.  J. Int., 142, 755-768, 2000. [PDF]

Klinger , Y., J.P. Avouac , N. Abou Karaki, L. Dorbath, N. Tisnerat, Seismic behavior of  the Dead Sea fault in northern Arava valley (Jordan), Geophys.  J. Int., 142, 769-782, 2000. [PDF]

Lavé J., and J.P. Avouac, Active folding of fluvial terraces across the Siwalik Hills (Himalaya of central Nepal),  J. Geophys. Res., 105, 5735-5770, 2000. [PDF].

Lavé J., and J.P. Avouac, Fluvial incision and tectonic uplift across the Himalayas of Central Nepal, J. Geophys. Res., 106, 26,561-26,592, 2001. [PDF]

Simoes M., J.P. Avouac, Y.-G. Chen, A. Singhvi, C.-Y. Wang, Y.-C. Chan, M. Jaiswal, and S. Bernard, Kinematic analysis of the Pakuashan fault-tip fold, West Central Taiwan: shortening rates  and age of folding inception,  Journal of Geophysical Research, 112, B03S14, doi: 10.1029/2005JB004198, 2007.   [PDF]

Simoes M., J.P. Avouac, and Y.-G. Chen, Slip rates on the Chelungpu and Chushiang thrust faults inferred from a deformed strath terrace along the Dungpuna river, West Central Taiwan, Journal of Geophysical Research, 112, B03S10, doi: 10.1029/2005JB004200, 2007.  [PDF]

Winter, Th., J.P. Avouac, et A. Lavenu, Late Quaternary kinematics of the Pallatanga strike-slip fault (Central Ecuador) from topographic measurements of displaced morphological features, Geophys. J. Int., 115, 905-920, 1993.

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