Deep Water Jackets (Water depth > 200m), Dynamic Amplification Factor Computation

Dear all,

Which would be the best method to compute the Dynamic Amplification Factor (DAF) for dynamically sensitive jackets (water depth > 200m)

Method 1: Using equivalent static loads in wave response input file, without using any wave spectrum (PM / JONSWAP) and computing the DAF as a ratio of Dynamic to Static Shear from the following output:

Method 2: Using Transfer Functions and corresponding wave spectrum (PM / JONSWAP) and computing the DAF as a ratio of Dynamic to Static RMS Shear from the following output:

Thanks and Regards,

SWARUP Selvaraj.