Index of Active Tectonic Assessment: Quantitative-based Geomorphometric and Morphotectonic Analysis at Way Belu Drainage Basin, Lampung Province, Indonesia

Dewi Gentana, Nana Sulaksana, Emi Sukiyah, Euis Tintin Yuningsih


The occurrence of subduction zones caused by the collision between the Eurasian-Western Indonesia Plate due to an increase tectonic, volcanic and magmatic activities along Sumatra Island. This study covers the area of Way Belu Drainage Basin, located near Bandar Lampung City, Lampung Province, southern part of Sumatra, Indonesia. The area composes of a complex geological structure as the result of tectonic activities. In this study, geomorphic indices assessment such as morphometric and morphotectonic quantitative analysis are undertaken to identify the Index of Active Tectonics (IAT). The morphometric analysis uses Drainage density (Dd) and Ratio of bifurcation (Rb). The value of Dd respectively from 1.45 to 4.05, Rb from  2 to 10. While the morphotectonic analysis uses basin shape index (Bs), valley floor width-valley height ratio (Vf), and asymmetry factor (AF). The value of Bs from 1.27 to 6.25, V from 0.16 to 3.30, and AF from 22.73 to 83.77 in ranges which is derived average IAT value is 2.20. It may considered that at the Way Belu Drainage Basin has moderate to high tectonic activity. From the joint measurement results on the fracture zone express that the main pattern of faults has trend NWW-SSE, NE-SW, NNE-SSW, NW-SE, and W-E directions. Furthermore, based on the combination of the quantitative geomorphology indices assessment which is supported by remote sensing and field assessment shows that those features closely related to the Semangko Fault System with the NNW-SSE fault trend parallel to its fault.


morphometric; morphotectonic; drainage basin; Index of Active Tectonics (IAT).

Full Text:



E. A. Keller and N. Pinter, Active Tectonics: Earthquakes, Uplift, and Landscape, 2nd Edition. New Jersey: Prentice Hall, 2002.

D. Gentana, E. Nurfiadi, I. Syafri, I.P.Y. Rosa, and M. Sulastri, “The role of physical-mechanical characteristics of weathered volcanic rock to the potential mass movement at the southern part of Garut, West Java, Indonesia,” in Proc. The 24th Annual scientific conference & exhibitions, Federation International Surveyors, 2016, pp. 1–12.

J.V. Pérez-Peña, A. Azor, J.M. Azañón, and E.A. Keller, “Active tectonics in the Sierra Nevada (Betic Cordillera, SE Spain): Insights from geomorphic indexes and drainage pattern analysis,” Geomorphology, vol. 119, pp. 74–87, June 2010.

H.G. Davis, J. Reynolds, Stephen, F. Kluth, and Charles. Structural Geology, 3rd edition. USA: John Wiley & Sons. Inc., 2011.

A. Masoud and K. Koike, “Applicability of computer-aided comprehensive tool (LINDA: Lineament Detection and Analysis) and shaded digital elevation model for characterizing and interpreting morphotectonic features from lineaments,” Compututers & Geosciences, vol.106, pp. 89–100, Sept. 2017.

E. Sukiyah, E. Sunardi, N. Sulaksana, and P.P.R. Rendra, “Tectonic geomorphology of upper cimanuk drainage basin, West Java, Indonesia,“ International Journal on Advance Science, Engineering and Information Technology, vol. 8, no. 3, pp. 863–869, 2018. [Online]. Available:

E. Sukiyah, I. Syafri, B.J. Winarto, B. Susilo, A. Saputra, and E. Nurfadli, “Active faults and their implications for regional development in the southern part of West Java, Indonesia,” in Proc. The 24th annual scientific conference & exhibitions, Federation International Surveyors, 2016, pp. 1–12 .

V.A.Argyriou, M.R. Teeuw, A. Sarris, “GIS-Based Landform Classification of Bronze Age Archaelogical Sites on Crete Island,” PLoS ONE 12 (2) : e0170727, February 2017.

R. McCaffrey, “The Tectonic Frame Work Of The Sumatran Subduction Zone,” Annu. Rev. Earth. Planet. Sci., 37:3.1–3.22, 2009.

D. Gentana, N. Sulaksana, E. Sukiyah, and E.T. Yuningsih, “Determination of tanggamus geothermal prospect area, Lampung Provinces, based on remote sensing and 3D micromine software,” in Proc.The 25th annual scientific conference & exhibitions. Federation International Surveyors, 2017, pp. 1–12.

Amin. The Geology of The Kotaagung, Sumatera Map, quadrangle 1010, scale 1: 250.000. Bandung: Indonesia Geological Survey Institute, 1973

K. Umeda, “Localized extensional tectonics in an overall reverse-faulting regime, Northeast Japan,” Geoscience Letters, vol. 2, no. 12., 2015.

H. Fossen, Structural Geology. Cambridge University Press, 2016.

E. Sukiyah, I. Syafri, A. Sjafrudin, E. Nurfadli, P. Khaerani, and D.A.P. Simanjuntak, “Morphotectonic and satellite imagery analysis for identifying quaternary fault at the southern part of Cianjur-Garut region, West Java, Indonesia,” in Proc. Asian Conference on Remote Sensing, 2015, pp. 1–10.

I.S. Stewart and P.L. Hancock, Neotectonics. In: Continental Tectonics. London: Pergamon Press, 1994.

A. Demoulin, “Basin and river profile morphology: A new index with a high potential for relative dating of tectonic uplift,” Geomorphology 126, 97 – 107, 2011.

M.J. Rickard, “Fault classification – discussion,” Geological Society of America Bulletin, 2545-2546, 1972.

R.E. Horton, “Erosional development of stream and their drainage basins: a hydrophysical approach to quantitative morphology,” Geological Society of America Bulletin, 1945.

NASA. (2016). ASTERG-DEM. Entity ID: ASTGDEMV2_0S06 E104. [Online]. Available: https://earth explorer.

J. Yangchan, A.K. Jain, A.K. Tiwari, and A. Sood, “Morphometric analysis of drainage basin through GIS: a case study of sukhna lake watershed in lower shiwalik, India,” International Journal of Scientific & Engineering Research, 6(2), 1015-1023, 2015.

H. Th. Verstappen, Applied Geomorphology: Geomorphological Surveys for Environmental Development. New York: Elsevier Science Pub. Co. Inc., 1983.

W.B. Bull and L.D. McFadden, “Tectonic geomorphology north and south of the Garlock fault, California,” in Proc. 8th annual geomorphology symposium, 1977, pp. 115–137 .

M. Dehbozorgi, M. Pourkermani, M. Arian, A.A. Matkan, H. Motamedi, and A. Hosseiniasl, “Quantitative analysis of relative tectonic activity in the Sarvestan area, central Zagros, Iran,” Geomorphology 121, 2010.

R. El Hamdouni, C. Irigaray, T. Fernández, J. Cahacón, and E.A. Keller, “Assessments of relative active tectonics, southwest border of the Sierra Nevada (southern Spain),” Geomorphology 96, 2008.

N. Sulaksana, Supriyadi. Ismawan. P.P. Raditya, and M. Sulastri, “Active fault analysis through quantitative assessment method in Cikapundung Sub-drainage basin,” International Journal of Study in Science & Technology, vol.3, 147-153, 2017.

A. Habibi and M. Gharibreza, “Estimation of the relative active tectonics in Shahriary basin (Central Iran) using geomorphic and seismicity indices,” Natural Environment Change, 1(1), 71-83. 2015.

E.J. Mosavi, M. Arian, M. Ghorshi, M. Nazemi, “Neotectonics of Tabas area, central Iran by Index of Active Tectonics (IAT),” Open Journal of Geology, 5, 209-223, 2015.



  • There are currently no refbacks.

Published by INSIGHT - Indonesian Society for Knowledge and Human Development