Evaluasi Sensitivitas Parameter yang Digunakan dalam Model Prediksi Erosi Answers

Abstract

Many erosion predictions on watershed scale have been conducted by scientists. The result of predicton will be accurate if the necessary data used in are also representative. One of the erosion prediction model is Areal Nonpoint Source Watershed Environtment Response Simulation (ANSWERS). The ANSWERS model is one that uses distributed parameters to simulate correlations between rainfall and sediment. The input data of model are rainfall, soil, land use and land surface condition, characteristic of channel and individual element unit. Those input data consist of parameters which show the characteristics of each element of the watershed. The output goined from the model is runoff and erosion. The changing of values within the parameters of input model effects output in varied levels. To know the amount of changing levels in parameters values with different methods towards the output, it is required that output sensitivity be evaluated towards the changing of model input.