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Towards a Metadata Standard for Distributed Acoustic Sensing (DAS) Data Collection

Description: 

With increasing use of Distributed Acoustic Sensing (DAS) technology, there is a need to implement a metadata standard specifically for DAS to facilitate the integration of DAS measurements across experiments and increase reusability. We propose a transfer metadata standard which may be adapted for storage. The schema describes the five key components of a DAS experiment: (1) interrogator, (2) data acquisition, (3) channels, (4) cable, and (5) fiber. The proposed metadata schema is hierarchical based, with a parent ‘overview’ metadata block describing the experiment, and child branches describing the instrumentation (i.e., interrogator and acquisition parameters) and the fiber sensor (i.e., cable installation and fiber properties). The metadata schema is designed to be independent of the time-series data so that corrections and updates can be applied to the metadata, without having to manipulate large volumes of time-series data. Unique identifiers are used as pointers that map different components within the metadata schema; they also provide a natural basis to the naming convention (i.e., source identifier) of the time-series data, where the time series data is uniquely defined by the metadata standard. Where possible, the identifiers are consistent in naming conventions with ProDML. We use GitHub to implement version control for the metadata standard, to enable community collaboration and facilitate sustainable development of the metadata standard. Examples are shown for common deployment scenarios. The path forward including technical issues and strategic path will be discussed.

Session: Advancing Seismology with Distributed Fiber Optic Sensing [Poster Session]

Type: Poster

Date: 5/3/2024

Presentation Time: 08:00 AM (local time)

Presenting Author: Robert

Student Presenter: No

Invited Presentation: 

Authors