KARAKTERISTIK SEDIMEN DI PERAIRAN PESISIR LEKOK, KABUPATEN PASURUAN, JAWA TIMUR
| Main Authors: | Anggraini, Rifka Rimbi , Yanuhar, Uun , Risjani, Yenny |
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| Format: | Article info application/pdf eJournal |
| Bahasa: | eng |
| Terbitan: |
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
, 2020
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| Subjects: | |
| Online Access: |
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/28705 http://journal.ipb.ac.id/index.php/jurnalikt/article/view/28705/19771 |
Daftar Isi:
- Sedimentation is one of the dynamics that occur in coastal areas to determine the condition of the coast. Lekok coastal water is one of the open water areas that have very fluctuating dynamics in coastal changes. The structural study of sediment distribution conducted in this location is used to provide information about the process of transportation and sedimentation based on the distribution of sediment grain size. This study aims to determine the horizontal grain sediment size in the Lekok coastal waters. This research was conducted at nine sampling points by sampling in the form of primary sediments randomly using the grab sampler method. Furthermore, further analysis is done by the gravimetric method. Based on the results of the study note that sediments characteristic in Lekok coastal water are generally dominated by three types of sediments, namely: sandy loam, loam, and silt loam. Sorting values are in a well-sorted to the moderately well-sorted condition where the sediment conditions are well sorted. The skewness value is skewed positively, where the value indicates a positive skewed sedimentary condition. The value of kurtosis is in the leptokurtic condition where the sediment from station 1 to station 9 is homogeneous.
- Sedimentasi merupakan salah satu dinamika yang terjadi di kawasan pesisir untuk mengetahui kondisi pantai tersebut. Pesisir perairan Lekok merupakan salah satu kawasan perairan terbuka yang memiliki dinamika perubahan pesisir sangat fluktuatif. Studi sebaran jenis sedimen yang dilakukan secara terstruktur pada lokasi ini digunakan untuk memberikan informasi mengenai proses transportasi dan pengendapan sedimen berdasarkan distribusi ukuran butir sedimen. Penelitian ini bertujuan untuk mengetahui ukuran butir sedimen secara horizontal di pesisir perairan Lekok. Penelitian ini dilakukan pada sembilan titik sampling dengan pengambilan sampel berupa sedimen dasar secara acak dengan menggunakan metode grab sampler. Selanjutnya dilakukan analisis lebih lanjut dengan metode gravimetri. Berdasarkan hasil penelitian diketahui bahwa karakteristik sedimen dalam Pesisir perairan Lekok umumnya didominasi oleh tiga jenis sedimen yaitu: lempung berpasir, lempung dan lempung lanau. Nilai sorting berada dalam kondisi well-sorted hingga kondisi moderately well-sorted di mana kondisi sedimen didominasi dengan well sorted. Nilai skewness berada pada nilai skewed positively dimana nilai menunjukkan hasil positif. Nilai kurtosis berada pada leptokurtic dimana sedimen dari stasiun 1 ke stasiun 9 homogen.