Trend and spatial variability of 1-day extreme rainfall from 1980 - 2015: study at the adminisitrative area of UPT PSDA Pasuruan

  • Indarto Indarto
    Universitas Jember
  • Askin Askin
  • Muhammad Dian Nurul Hidayat
DOI: https://doi.org/10.23960/jtep-l.v8i1.29-39
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Abstract

This study aims to analyze trends,  shift and spatial variability of extreme-rainfall in the area of UPT PSDA Pasuruan. The daily rainfall data from 64 stations from 1980 until 2015 were used as main input. The 1-day extreem rainfall data is determined as the maximum annual of 24-hour rainfall events.  The statistical  analysis using Mann-Kendall, Rank-Sum, and Median Crossing Test using significance level α = 0,05. The spatial variability of extrem rainfall data is described using average annual 24-hour rainfall during the periods of record. Each station is represented by one value. The values are then interpolated using IDW interpolation methods to maps the spatial variability of extreem rainfall event.  The results show the value of statistical test for each stations that show the existing  trend, shift, or randomness of data. The result also produce thematic maps show the spatial variability of extreme rainfall and the value of each trend.

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Published
2019-03-31
How to Cite
Indarto, I., Askin, A., & Hidayat, M. D. N. (2019). Trend and spatial variability of 1-day extreme rainfall from 1980 - 2015: study at the adminisitrative area of UPT PSDA Pasuruan. Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering), 8(1), 29–39. https://doi.org/10.23960/jtep-l.v8i1.29-39