Grain size and sedimentation process in the Anak Krakatau coastal area of Indonesia
Anak Krakatau coastal area was used as a research location because it has unique characteristics, i.e., a small volcanic island with an active volcano. This study aims to analyze the grain size and sedimentation process in the Anak Krakatau coastal area. A total of 24 samples, each consisting of 8 s...
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Elsevier
2024-12-01
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| Series: | Results in Earth Sciences |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211714824000050 |
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| author | Bachtiar W. Mutaqin Muhammad Nadafa Isnain Renny Laksmita Ningsih Herlan Darmawan Suratman |
| author_facet | Bachtiar W. Mutaqin Muhammad Nadafa Isnain Renny Laksmita Ningsih Herlan Darmawan Suratman |
| author_sort | Bachtiar W. Mutaqin |
| collection | DOAJ |
| description | Anak Krakatau coastal area was used as a research location because it has unique characteristics, i.e., a small volcanic island with an active volcano. This study aims to analyze the grain size and sedimentation process in the Anak Krakatau coastal area. A total of 24 samples, each consisting of 8 sediment samples on land, beaches, and seabed surfaces, were collected purposively. Granulometric analysis was performed using statistical methods with Gradistat. Descriptive analysis, Linear Discriminant Analysis (LDA), and Stewart and Passega's diagrams were conducted to compare differences in grain size of sediments on land, beach, and seabed surfaces, as well as the factors that can influence them. Our results demonstrated that the mean value indicated a predominance of very coarse particles, suggesting high-energy conditions during sediment deposition. Samples from the land exhibited the largest mean size (Mz-3.627 or medium gravel), while samples from the seabed surface had the smallest mean size (Mz0.692 or coarse sand), implying greater energy on the land compared to the sea. LDA plots confirmed that sediments from the land and shore were deposited in a fluvial environment, whereas samples from the seabed represented shallow ocean deposits. Additionally, Stewart and Passega's diagrams show that seabed surface samples had been deposited through rolling action caused by waves. |
| format | Article |
| id | doaj-art-32a8cabc8ed84f62887ff0d3abdce952 |
| institution | OA Journals |
| issn | 2211-7148 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
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| series | Results in Earth Sciences |
| spelling | doaj-art-32a8cabc8ed84f62887ff0d3abdce9522025-08-20T01:58:08ZengElsevierResults in Earth Sciences2211-71482024-12-01210001810.1016/j.rines.2024.100018Grain size and sedimentation process in the Anak Krakatau coastal area of IndonesiaBachtiar W. Mutaqin0Muhammad Nadafa Isnain1Renny Laksmita Ningsih2Herlan Darmawan3 Suratman4Coastal and Watershed Research Group, Faculty of Geography, Universitas Gadjah Mada, Yogyakarta 55281 Indonesia; Corresponding author.Environmental Monitoring, Modelling, and Reconstruction, School of Environment, Education and Development, University of Manchester, Manchester M13 9PL, United KingdomCoastal and Watershed Research Group, Faculty of Geography, Universitas Gadjah Mada, Yogyakarta 55281 IndonesiaLaboratory of Geophysics, Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Yogyakarta 55281 IndonesiaCoastal and Watershed Research Group, Faculty of Geography, Universitas Gadjah Mada, Yogyakarta 55281 IndonesiaAnak Krakatau coastal area was used as a research location because it has unique characteristics, i.e., a small volcanic island with an active volcano. This study aims to analyze the grain size and sedimentation process in the Anak Krakatau coastal area. A total of 24 samples, each consisting of 8 sediment samples on land, beaches, and seabed surfaces, were collected purposively. Granulometric analysis was performed using statistical methods with Gradistat. Descriptive analysis, Linear Discriminant Analysis (LDA), and Stewart and Passega's diagrams were conducted to compare differences in grain size of sediments on land, beach, and seabed surfaces, as well as the factors that can influence them. Our results demonstrated that the mean value indicated a predominance of very coarse particles, suggesting high-energy conditions during sediment deposition. Samples from the land exhibited the largest mean size (Mz-3.627 or medium gravel), while samples from the seabed surface had the smallest mean size (Mz0.692 or coarse sand), implying greater energy on the land compared to the sea. LDA plots confirmed that sediments from the land and shore were deposited in a fluvial environment, whereas samples from the seabed represented shallow ocean deposits. Additionally, Stewart and Passega's diagrams show that seabed surface samples had been deposited through rolling action caused by waves.http://www.sciencedirect.com/science/article/pii/S2211714824000050GranulometricDistributionSedimentSmall volcanic islandAnak Krakatau |
| spellingShingle | Bachtiar W. Mutaqin Muhammad Nadafa Isnain Renny Laksmita Ningsih Herlan Darmawan Suratman Grain size and sedimentation process in the Anak Krakatau coastal area of Indonesia Results in Earth Sciences Granulometric Distribution Sediment Small volcanic island Anak Krakatau |
| title | Grain size and sedimentation process in the Anak Krakatau coastal area of Indonesia |
| title_full | Grain size and sedimentation process in the Anak Krakatau coastal area of Indonesia |
| title_fullStr | Grain size and sedimentation process in the Anak Krakatau coastal area of Indonesia |
| title_full_unstemmed | Grain size and sedimentation process in the Anak Krakatau coastal area of Indonesia |
| title_short | Grain size and sedimentation process in the Anak Krakatau coastal area of Indonesia |
| title_sort | grain size and sedimentation process in the anak krakatau coastal area of indonesia |
| topic | Granulometric Distribution Sediment Small volcanic island Anak Krakatau |
| url | http://www.sciencedirect.com/science/article/pii/S2211714824000050 |
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