TY - JOUR ID - 240769 TI - Source Parameterization of Finite Faults in Earthquake Ground Motion Simulation JO - Journal of Seismology and Earthquake Engineering JA - JSEE LA - en SN - 1735-1669 AU - Houshmandviki, Ameneh AU - Ansari, Anooshiravan AD - International Institute of Earthquake Engineering and Seismology (IIEES), Tehran Y1 - 2017 PY - 2017 VL - 19 IS - 4 SP - 261 EP - 271 KW - Interpolation KW - h-p notion KW - Parkfield earthquake KW - Goodness-of- fit KW - Finite fault simulation DO - N2 - The effect of interpolation function for describing spatial variations of slip on the fault surface is investigated using finite fault simulation. In analogy with h-p notion in finite element method, the effect of increasing the order of interpolation function and decreasing the size of elements is studied here. In this regard, the fault surface is discretized using different elements, namely, constant discontinuous elements with various sizes, and first order contentious elements with different sizes. In order of parameterization, a bilinear interpolation technique is introduced to represent variation of source parameters within the subfault area. To provide an objective basis for comparison, the September 28, 2004 Parkfield earthquake Mw 6.1 is considered and time-frequency, envelope-phase goodness-of-fit criteria is calculated to compare synthetic and observed waveforms quantitatively in time and frequency domains. It was revealed that by increasing the order of interpolation function, the overall consistency of observed and synthetic waveforms will increase, while the expense of computational analyses will also increase accordingly. UR - http://www.jsee.ir/article_240769.html L1 - http://www.jsee.ir/article_240769_65fcd82ae9f5c7111b5062903688a37c.pdf ER -