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[12]
12 Clough-Penzien谱的表达式如下：
[13]
13 (A1)
[14]
14 式(A1)中,各项均与时间相关。演化谱中采用Bogdanoff-
[15]
15 Goldberg-Bernard调制函数：
[16]
16 (A2)
[17]
17 ω g ( t )=20-7 t /30, ζ g ( t )=0.6-0.2 t /30 (A3)
[18]
18 ω f ( t )=0.1 ω g ( t ), ζ f ( t )= ζ g ( t ) (A4)
[19]
19 S 0 ( t )= σ 2 /(π ω g ( t )(2 ζ g ( t )+1/2 ζ g ( t )) (A5)
