Sensitivity of bubble resonance to environmental inputs using the Anderson model

The Anderson model relates the expected sound speed and attenuation (both a function of bubble resonance) through bubbly sediment to physical properties of the gas (including shape and temperature) as well as the anelastic properties of the surrounding sediment. This mathematical formulation allows relatively straightforward assessment of the sensitivity of the sound speed and attenuation to each of the approximately 20 inputs to the model. Our sensitivity analysis was performed at several locations in model space that correspond to realizations of frequently encountered, realistic, bubbly sediments. We first determine a baseline multi‐frequency acoustic response from a starting sediment and gas type, then compare the baseline response to responses from a perturbed model. Coupled parameters are perturbed simultaneously (by differing percentages) such that at no time are we simulating the response of an unrealistic sediment. Results suggest a generally greater sensitivity to gas and pore fluid properties t...