VARIABILITAS SPASIAL HUJAN DI WILAYAH UPT PSDA DI MALANG

Authors

DOI:

https://doi.org/10.23960/jtep-l.v6i3.171-180

Abstract

This study show the spatial variabilit of rainfall (monthly and annual) rainfall in the area of technical implementation unit of water resources management (UPT-PSDA) in Malang. Administrative area of UPT PSDA in Malang include Malang regency, Malang city, Batu, Blitar Regency, Tulungagung Regency, and Trenggalek Regency. Daily rainfall  data from 88 pluviometers spread around the areas are used as main input. The research procedures consist of : (1) data pre-analysis; (2) the analyses using ESDA tools (Histogram, voronoi, QQ-Plot); (3) interpolation by using IDW method; (4) producing a thematic map; and (5) interpretation.  Analysis using the histogram, voronoi−maps and normal QQ-plots tools illustrates more detail the spatial variability of the monthly and annual rainfall around the regions. Interpolation produces a thematic map of mean monthly-rainfall, between 100 − 400 mm/month. The spatial distribution of annual rainfall was illustrated by a thematic show the average-annual-range from 1000 − 4000 mm/year.

 

Keywords:

spatial variability, rainfall, ESDA, IDW, monthly, annual rainfall

Author Biography

  • Indarto Indarto, Universitas Jember
    PS TEP FTP UNEJ Jl. Kalimantan no. 37 Kampus Tegalboto Jember 68121

References

Indarto dan Boedi S. 2011. Variabilitas Spasial Hujan Tahunan di Jawa Timur: Aplikasi ESDA (Histogram, Voronoi Map, QQ-Plot, Trend Analysis). Jurnal Teknik Sipil, Vol. XI ISSN 1412 – 0976 : 61 - 69.

Indarto. 2013a. Analisis Geostatistik. Yogyakarta: Graha Ilmu.

Indarto. 2013b. Variabilitas Spasial Hujan Harian di Jawa Timur. Jurnal Teknik Sipil, Vol. 20(2) : 107-120.

Johnston, K., Ver Hoef, J.M., Krivoruchko, K. dan Lucas, N. 2001. Using ArcGIS Geostatistical Analyst. GIS by ESRI.

Downloads

Published

2018-03-28

Issue

Vol. 6 No. 3 (2017)

Section

Articles

License

    1. Authors who publish with this journal agree to the following terms:

        1. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution-ShareAlike 4.0 International Lice that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
        2. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
        3. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).

        4. Jurnal Teknik Pertanian Lampung

          Creative Commons License
          JTEPL is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.