• International Journal of Technology (IJTech)
  • Vol 2, No 1 (2011)

Simulation of River Discharges in Major Watersheds of Northwestern Java From 1901 To 2006

Simulation of River Discharges in Major Watersheds of Northwestern Java From 1901 To 2006

Title: Simulation of River Discharges in Major Watersheds of Northwestern Java From 1901 To 2006
Miga M. Julian, Fumihiko Nishio, Poerbandono , Philip J. Ward

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Published at : 17 Jan 2014
Volume : IJtech Vol 2, No 1 (2011)
DOI : https://doi.org/10.14716/ijtech.v2i1.44

Cite this article as:
Julian, M.M., Nishio, F., Poerbandono, Ward, P.J., 2011. Simulation of River Discharges in Major Watersheds of Northwestern Java From 1901 To 2006. International Journal of Technology. Volume 2(1), pp. 37-46

Miga M. Julian Study Program of Geodesy and Geomatics Engineering, Institute of Technology, Bandung 40132, Indonesia
Fumihiko Nishio Center for Environmental Remote Sensing, Chiba University, Chiba, 263-8522, Japan
Poerbandono Faculty of Earth Sciences and Technology, Institute of Technology 40132, Bandung, Indonesia
Philip J. Ward Institute for Environmental Studies, VU University Amsterdam, De Boelelaan 1085, 1081 HVAmsterdam, The Netherlands
Email to Corresponding Author

Simulation of River Discharges in Major Watersheds of Northwestern Java From 1901 To 2006

This study is intended to simulate the river discharges in major watersheds of northwestern Java, Indonesia. The five largest watersheds are considered: Ciujung, Cisadane, Ciliwung, Citarum, and Cimanuk. The simulation period covers the 20th century and early 21st century, from January 1901 to June 2006, at a monthly time step. Discharge simulation was carried out using STREAM (Spatial Tools for River Basins and Environmental and Analysis of Management Option). The input data for the simulation are climate (precipitation and temperature), land cover and topographic data. Setup and analysis of input data are also part of this study. The Mann-Kendall test and linear regression were used to detect trends. Temperature datasets show statistically significant increasing trends for all periods and areas. Significant increasing trends of precipitation occurred in the latest 16-year period (1990-2006) in hilly and middle areas. A positive trend of simulated discharge is seen in all watersheds and periods. They are only significant for Ciujung (periods of 1950-2006 and 1975-2006), Cisadane (periods of 1950-2006 and 1990-2006), and Ciliwung (periods of 1950-2006, 1975-2006, and 1990- 2006). The most noteworthy trend is seen in the 1990-2006 period. Over the course of the 20th and early decade of the 21st century, monthly discharges have increased by 3% to 9%.

Climate, Discharge, Land cover, Simulation


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