ANALISIS PARAMETER STATISTIK BUTIRAN SEDIMEN DASAR PADA SUNGAI ALAMIAH (Studi Kasus Sungai Krasak Yogyakarta)
Abstract: Natural rivers are
characterized by a meandering channel with multiple grain-size bed and unsteady
flow. Among some of the properties of the sediment grains, the size of the sediment
is one of nature's most important and widely used in sedimentation engineering.
Grain size greatly affects the easy presence and extent of sediment
transported. To study the characteristics of bed material on the sediment
transport, various studies have been conducted. This paper examines statistical
parameters of grain on the sediment transport from a natural river (River
Krasak, Yogyakarta). Variables studied include the classification of grain
size, mean (average), standard deviation (sorting), skewness, and kurtosis.
Based on the statistical parameters of grain size, the results from three
stations showed that bed materials of Krasak 1 are characterized by gravel
mode, very poorly sorted, and distributed platikurtic negative skewness. Types
of samples are polymodal. Bed materials of Krasak 2 are characterized by the
mode of sand, and poorly sorted, and distributed platikurtic very positive
skewness. Type of samples are bimodal. While the bed material of Krasak 3 are
characterized by sand mode and poorly sorted, and distributed platikurtic very
positive skewness. Types of samples are polymodal
Kata kunci: sungai alamiah,
parameter statistik butiran, mean, sorting, skewness, kurtosis, platikurtic,
bimodal, polymodal
Penulis: Junaidi, Restu wigati
Kode Jurnal: jptsipildd110243
