Rainfall Mapping in Medan Selayang Sub-District using Geographic Information System

International Journal of Research in Vocational Studies (IJRVOCAS) Pub Date : 2023-01-11 DOI:10.53893/ijrvocas.v2i4.164

Dina Tri Septiningtiyas, Rifka Ananda

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Abstract

Indonesia is a tropical country which has two seasons, namely the rainy season and the dry season. Rainfall that occurs will vary in each area depending on the altitude of the area, climate, season, and other factors. Medan Selayang Subdistrict is the Subdistrict with the closest distance to the rain station. Where the closer the location of the study area to the rain station, the more accurate the rainfall data obtained will be. One way to make it easier to record and process data is to create a rainfall map by utilizing spatial analysis through a Geographic Information System (GIS). The data in this study are rainfall data and geographic coordinate data obtained from the Meteorology, Climatology and Geophysics Agency in the Medan City area. After data collection, data processing was carried out using the QGIS 3.10 application. with the Inverse Distance Weighted (IDW) interpolation method. From the results of processing rainfall maps in the Medan Selayang sub-district using Inverse Distance Weighted (IDW) interpolation, the rainfall values (rainfall) ranged from 3029.74 mm/year – 3164.20 mm/year.

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基于地理信息系统的棉兰市色拉阳街道降雨制图

印度尼西亚是一个热带国家，有两个季节，即雨季和旱季。每个地区的降雨量会因该地区的海拔高度、气候、季节和其他因素而有所不同。棉兰Selayang街道是距离雨站最近的街道。研究区位置离雨站越近，获得的降雨数据越准确。使记录和处理数据更容易的一种方法是通过地理信息系统(GIS)利用空间分析创建雨量图。本研究的数据是棉兰市地区气象、气候和地球物理局的降雨数据和地理坐标数据。数据采集完成后，使用QGIS 3.10应用程序进行数据处理。采用逆距离加权(IDW)插值方法。利用IDW插值法对棉兰色拉阳街道的雨量图进行处理，得到了3029.74 mm/年~ 3164.20 mm/年的雨量值。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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International Journal of Research in Vocational Studies (IJRVOCAS)

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