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Acoustic Metadata Management and Transparent Access to Networked Oceanographic Data Sets

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Technical Report

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San Diego State University San Diego United States

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The use of bioacoustics to detect, classify, localize, and establish density estimates of marine fauna provides a cost-effective complement or alternative to visual-based methods of study for monitoring and mitigation Mellinger et al., 2007 Marques et al., 2011 and considerable resources have been invested in the development of bioacoustic analysis methods to accomplish this. As the number of available recordings grows, the ability to manage information derived from these recordings metadata of the recordings becomes crucial in order to combine data across disparate studies to provide information at temporal and spatial scales that are meaningful with respect to oceanic, atmospheric, and anthropogenic processes that may affect the health and productivity of various animal stocks.Of particular importance for bioacoustic metadata is the specification of the how the metadata were generated. The period over which effort was invested may not be the same as that of the acoustic data itself. Examples of this include gaps due to instrument failure, analysis of targeted time periods, etc. In addition to specifying the period, the methods used to analyze the acoustic data must be documented in a way that permits scientists to make intelligent decisions about when acoustic metadata from different studies can be combined and when they should not.

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