Accession Number:

ADA516431

Title:

InfraMonitor: A Tool for Regional Infrasound Monitoring

Descriptive Note:

Conference paper

Corporate Author:

LOS ALAMOS NATIONAL LAB NM

Personal Author(s):

• Arrowsmith, Stephen J.
• Whitaker, Rod

Report Date:

2008-09-01

Pagination or Media Count:

8.0

Abstract:

With the recent increase of regional infrasound deployments, there is a need for tools that can be applied to networks of infrasound arrays in order to generate robust event catalogs. We present a new tool for regional infrasound monitoring that performs signal detection, association, and event location for networks of infrasound arrays. First, an algorithm for robust signal detection is presented, which utilizes an adaptive noise hypothesis, compensating for variable ambient noise. We show that the adaptive detection scheme performs significantly better than standard detection schemes in the presence of correlated noise. Next, we present a robust method for the association and location of infrasound events recorded at multiple arrays. A Matlab toolbox with a GUI interface, InfraMonitor 1.0, has been developed that incorporates this suite of algorithms for regional infrasound monitoring. An outline of the InfraMonitor 1.0 package is presented. A computer demonstration of InfraMonitor 1.0 will be available at the 2008 Monitoring Research Review meeting.

Descriptors:

• *MONITORING
• *INFRASOUND
• *ARRAYS
• *GRAPHICAL USER INTERFACE
• SYMPOSIA
• HYPOTHESES
• NETWORKS
• AMBIENT NOISE
• DEPLOYMENT
• REPRINTS
• ALGORITHMS
• COMPUTER PROGRAMS

Subject Categories:

• Numerical Mathematics
• Computer Programming and Software
• Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE