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Wibowo, Rahmat Catur and Mulyatno, Bagus Sapto and Dewanto, Ordas and Sarkowi, Muh Structure from Motion (SfM) to Characterize Fluvial Sedimentology: Case Study Way Semaka River. In: ICSTAR 2020. (In Press)

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Abstract

Structure from motion (SfM) has seen rapid uptake recently in the fluvial sedimentology. This uptake is not least due to the widespread availability of cheap unmanned aerial vehicles/drones, which help mitigate the challenging terrain and deliver efficient and reproducible and high-accuracy images and topographical data. The current study describes the application of SfM in order to build a geomorphological model and estimates surface water velocity of Way Semaka River in BNS region, West Lampung. Way Semaka river is river type with a large meandering system and stable extension tectonic regime, relatively. River morphology approximately 96.62 m width and 4 m depth in straight (relatively) area, whereas in channel area approximately 171.22 m width and 5 m depth. The velocity range between 0.39 – 1.56 m/s based on image analysis and proven by current meter measurements onsite with an RMS error 0.25. Manual geomorphic unit level 2 analysis revealed that for the zone within the channel, 9% of the coverage consisted of basins, 35% of the coverage consisted of convexity, 9% consisted of planar features and 37% of the coverage consisted of the transition zone.

Item Type: Conference or Workshop Item (Paper)
Subjects: Q Science > QC Physics
Q Science > QE Geology
Divisions: Fakultas Teknik (FT) > Prodi Teknik Geofisika
Depositing User: Rahmat Catur Wibowo, S.T., M.Eng.
Date Deposited: 21 May 2021 05:48
Last Modified: 21 May 2021 05:48
URI: http://repository.lppm.unila.ac.id/id/eprint/30373

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