Tectonic Geomorphology of Upper Cimanuk Drainage Basin,  West Java, Indonesia

Sukiyah, Emi; Sunardi, Edy; Sulaksana, Nana; Rendra, Pradnya Paramarta Raditya

doi:10.18517/ijaseit.8.3.5441

Cited by 12 publications

(16 citation statements)

References 2 publications

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“…The southern Semangko Fault has right lateral strike-slip fault that is outlined about 1660 km on Sumatra and observed from several parameters such as geologic unit offset, river offset, and geodetic size including the Global Positioning System (GPS) points out that the slip ratio is in southeastern Sumatra is about 6 mm/yr. [6], [9]. It is correspond with phenomenon in study area.…”

Section: Discussion Of Tectonic Activity In the Study Areamentioning

confidence: 64%

“…Several indications of morphological appearance in the active tectonics can be learned by using morphometric parameters such as Drainage density (D d ) and Ratio of bifurcation (R b ). They are the response variable of landform and tectonic [14] [6].…”

Section: Methodsmentioning

confidence: 99%

“…According to [16] the geomorphometric index formulation of a sub-drainage basin, as well as the overall drainage basin, reflects the tectonic activity response to the landscape of a basin. According to [6], the characteristics of the drainage basin are studied through morphometric characteristics of each sub-drainage basin.…”

Section: Methodsmentioning

confidence: 99%

“…Sumatra fault is mainly a strike-slip fault [6]. The satellite imagery studies contribute to the knowledge about Sumatra Fault [6]. Regionally, the structure of the study area was affected by subduction zone which has strike-slip and oblique movement in line with Riddle shear model.…”

Section: Introductionmentioning

confidence: 92%

“…Sumatra fault is mainly a strike-slip fault [6]. The satellite imagery studies contribute to the knowledge about Sumatra Fault [6].…”

Section: Introductionmentioning

confidence: 99%

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

Gentana¹,

Sulaksana²,

Sukiyah³

et al. 2018

Int. J. Adv. Sci. Eng. Inf. Technol.

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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 (D d) and Ratio of bifurcation (R b). The value of D d respectively from 1.45 to 4.05, R b from 2 to 10. While the morphotectonic analysis uses basin shape index (Bs), valley floor width-valley height ratio (V f), and asymmetry factor (AF). The value of Bs from 1.27 to 6.25, V f 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 WE 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.

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Section: Discussion Of Tectonic Activity In the Study Areamentioning

confidence: 64%

Section: Methodsmentioning

confidence: 99%