Title: Geology and granulometry analysis of Krueng Aceh River floodplain, Aceh Besar

Authors: Muhammad Irham; Firdha Sabrina; Fahri Adrian; Gartika Setiya Nugraha; Dewi Sartika; Edy Miswar

Addresses: Faculty of Marine and Fisheries, Universitas Syiah Kuala, 23111, Banda Aceh, Indonesia; Department of Geological Engineering, Faculty of Engineering, Universitas Syiah Kuala, 23111, Banda Aceh, Indonesia; Centre for Environmental and Natural Resource Research (PPLH-SDA), Universitas Syiah Kuala, 23111, Banda Aceh, Indonesia ' Department of Geological Engineering, Faculty of Engineering, Universitas Syiah Kuala, 23111, Banda Aceh, Indonesia ' Department of Geological Engineering, Faculty of Engineering, Universitas Syiah Kuala, 23111, Banda Aceh, Indonesia ' Department of Geological Engineering, Faculty of Engineering, Universitas Syiah Kuala, 23111, Banda Aceh, Indonesia ' Department of Geological Engineering, Faculty of Engineering, Universitas Syiah Kuala, 23111, Banda Aceh, Indonesia ' Faculty of Marine and Fisheries, Universitas Syiah Kuala, 23111, Banda Aceh, Indonesia; Centre for Environmental and Natural Resource Research (PPLH-SDA), Universitas Syiah Kuala, 23111, Banda Aceh, Indonesia; Geographical Information Systems Laboratory, Faculty of Marine and Fisheries, Universitas Syiah Kuala, 23111, Banda Aceh, Indonesia

Abstract: The study aims to understand the geological conditions and examine the size and characteristic of sediment grains in the Krueng Aceh floodplain. The method used was sampling 14 points of soil samples in the floodplains using hand auger with 100 cm deep. Geological outcrop analysis was carried out to determine the geomorphological units of rocks. Mapping and data processing used ArcGIS software and floodplain soil sample employed multilevel sieve. The results show that the outcrop analysis found three geomorphological units, namely, denudational hills, river and floodplain, and river terrace unit and consisted of three rock units: sandstone, conglomerate, and alluvial unit. Based on the percentage of granulometry analysis the fine sand size sediments are dominated. For the analysis based on river channels, the cut bank zone has the size of fine sand to very fine sand and the beach zone granulometry ranges from gravel, very coarse sand and coarse sand.

Keywords: granulometry analysis; Krueng Aceh River floodplain; geomorphological unit; rock-unit.

DOI: 10.1504/IJHST.2023.133131

International Journal of Hydrology Science and Technology, 2023 Vol.16 No.3, pp.270 - 287

Received: 25 Aug 2021
Accepted: 28 Apr 2022
Published online: 01 Sep 2023 *

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