ANALYSIS OF THE INFLUENCE OF GEOMORPHOLOGICAL AND SURFACE AERODYNAMICS FACTORS ON THE RELATIONSHIP BETWEEN MAXIMUM AND AVERAGE WIND SPEED

• Main Author: Kinanti, Kidung
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/85175
• Institution: Institut Teknologi Bandung

The relationship between maximum wind speed and average wind speed is not linear and is influenced by many factors. Based on previous studies, geomorphology and surface aerodynamics are factors that may significantly influence the relationship between the two variables. Therefore, this study was conducted with the aim of statistically analysing the influence of geomorphology and surface aerodynamics factors on the relationship between maximum and average wind speed. Daily maximum and average wind speed data for 2016-2022 from 56 Automatic Weather System (AWS) owned by the Meteorological, Climatological and Geophysical Agency (BMKG) spread throughout Indonesia were processed. This data is processed into a combined distribution form to obtain wind speed distribution patterns that represent each AWS station. The distribution patterns were clustered using the K-Means method to separate stations with similar distribution patterns. Furthermore, the tendency of geomorphological and surface aerodynamics features in each group was identified to find significant characteristics. Six groups of AWS stations with similar distribution patterns were found, indicating the influence of geomorphological and surface aerodynamics factors in some cases. Analysis of variations in geomorphological characteristics showed differences that may affect wind speed distribution, while surface aerodynamics variables need further study to determine significant differences between groups. This study indicates that each station group has trends in geomorphological and surface aerodynamics characteristics, but no specific parameter consistently controls the relationship between maximum and average wind speed.