Shallow Subsurface Sediment Characteristics of Northern Obira Coastal Based on Georadar Facies Interpretation

B. Sugiarto, F. B. Prasetyo, M. Zulfikar, G. Latuputty, R. Zuraida, L. Gustiantini, Y. Noviadi, U. Hernawan

Research output: Contribution to journalConference articlepeer-review


The Georadar (GPR) as a non-destructive technique has been used extensively for geological research. The study was conducted in order to identify coastal sediment characteristics of northern Obi coastal area by performing GPR radar facies analysis. The model of GPR used was Sirveyor 20 with MLF antenna frequency 40 Mhz, penetration depth was 10 meter, and Radan 5 as processing software which include time zero correction, spatial filtering, deconvolution, migration, adjustment amplitude and signal gain. Data interpretation describes georadar image/radargram based on radar facies methodology. The result showed three differences of radar facies unit. The radar facies unit can be divided into 2 facies units in which there are 2 other sub-units, namely unit 1A, 1B, 2A and 2B. Radar facies characterized by medium-high amplitude, continuous parallel-subparallel, medium-weak reflector. At the top part down to 3.75 m is Unit 1A that intersects with 1B. Below 3.75 - 7.75 m depth interval is Unit 2A, and unit 2B is from 7.75-10 meter depth interval. Unit 1 is interpreted as Quartenary alluvium (Qa) and unit B is Woi Formation (Tmpw). Radar facies characteristic indicated the differences of the geological unit.

Original languageEnglish
Article number012012
JournalIOP Conference Series: Earth and Environmental Science
Issue number1
Publication statusPublished - 12 May 2021
Event6th International Conference on Tropical Coastal Region Eco-Development 2020, ICTCRED 2020 - Semarang, Virtual, Indonesia
Duration: 27 Oct 202028 Oct 2020


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