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Lawrence et al., 2012: DRAFT: JGR: Ambient Noise Numerical ...

Lawrence et al., 2012: DRAFT: JGR: Ambient Noise Numerical ...

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<strong>Lawrence</strong> <strong>et</strong> <strong>al</strong>., <strong>2012</strong>: <strong>DRAFT</strong>: <strong>JGR</strong>: <strong>Ambient</strong> <strong>Noise</strong> Numeric<strong>al</strong> Ev<strong>al</strong>uation<br />

The first and obvious scenario that fails to provide the correct answer occurs when the<br />

sources are confined or mostly in the near field (Δsx 16)<br />

and inaccurate estimates for simulations with fewer noise sources per window (Ns < 16).<br />

When the incoherent noise level is below ~1, the accuracy is sufficient to recover<br />

accurate attenuation. Within these two confines, there is little trade-off b<strong>et</strong>ween these<br />

param<strong>et</strong>ers for a wide range of dimensions v<strong>al</strong>ues.<br />

Ultimately, a combination of the proposed source configuration is more plausible than<br />

any individu<strong>al</strong> one. We therefore created case that evenly draws from the four source<br />

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