## 1 Introduction  
For the response history analysis of structures, the input ground motion time histories as seismic loads are required. The selection of input ground motions recorded at the site under consideration or others with similar site conditions, considering site-specific characteristics, is recommended to evaluate appropriate analysis results [1]. The ground motion time history recorded at a site captures the seismic wave from the earthquake rupture process and the propagation effect from the earthquake source to the site, along with site effects such as site amplification, all of which can affect the input ground motion for response analysis of structures [2, 3, 4]. The frequency of the input ground motions is closely related to topographic irregularities and affects site amplification; therefore, the use of recorded ground motions for structural response analysis should be considered [5]. In low to moderate seismicity regions, there is a scarcity of recorded earthquake accelerograms corresponding to credible intensities that can damage structures. Where the required number of recorded ground motions is not available, appropriate simulated ground motions are generated stochastically, or ground motion time histories recordedin regions with similar seismicity to the site under consideration are used. For stochastically simulated ground motions, it is possible to generate multiple ground motion time histories compatible with the target spectrum [6]. Stochastically simulated ground motion time histories have faced challenges in accurately reflecting the features of actual earthquakes, which are important for structural seismic response predictions [7]. However, recent methodologies have been developed for the stochastic generation of artificial acelerograms that capture actual earthquake characteristics, such as non-stationary time histories [8; 9], and ensure compatibility with ground motion prediction equations [10]. Despite these advancements, guidelines and standards for critical structures such as nuclear power plants continue to recommend generating input ground motions for seismic loads by using and expanding recorded ground motions, although the use of artificial ground motions is permitted [11; 12; 13]. In this regard, a methodology based on a site-based variant approach was developed, utilizing recorded ground motions as seed motions and considering actual earthquake characteristics to generate ground motions compatible with the target spectrum [14]. Alternatively, the use of ground motions recorded from other high seismicity regions as input seismic loads can satisfy the seismic intensity level being considered. [PERSON] et al. [15] and [PERSON] et al. [16] selected ground motions from the pacific earthquake engineering research center's ground motion database, instead of using recorded ground motions from the target region. [PERSON] et al. [15] classified seismic source types into three categories and identified scenario earthquakes from seismic hazard de-aggregation results for ground motion selection. The effects of the selected ground motion characteristics on the structural response were analyzed. [PERSON] et al. [16] selected ground motions matching specific magnitude-distance conditions for structural seismic risk assessment. However, seismic waves generated in different tectonic environments exhibit distinct properties, and design standards generally recommend using seismic input motions recorded from the relevant region [17; 18; 19]. Nevertheless, few studies have presented procedures for generating ground motions for the risk assessment of critical structures by scaling the magnitude of the recorded motions in low to moderate seismicity regions to spectrally match the risk assessment spectrum. Therefore, it is necessary to conduct research on generating appropriate input ground motions for analyzing the behavior of a structure under seismic loads using the recorded ground motion that reflects the characteristics of the site under consideration.