Multiscale estimation of event arrival times and their uncertainties in hydroacoustic records from autonomous oceanic floats

Joel D. Simon, Frederik J. Simons, Guust Nolet

Research output: Contribution to journalArticle

Abstract

We describe an algorithm to pick event onsets in noisy records, characterize their error distributions, and derive confidence intervals on their timing. Our method is based on an Akaike information criterion that identifies the partition of a time series into a noise and a signal segment that maximizes the signal-to-noise ratio. The distinctive feature of our approach lies in the timing uncertainty analysis, and in its application in the time domain and in the wavelet timescale domain. Our novel data are records collected by freely floating Mobile Earthquake Recording in Marine Areas by Independent Divers (MERMAID) instruments, midcolumn hydrophones that report triggered segments of ocean-acoustic time series.

Original languageEnglish (US)
Pages (from-to)970-997
Number of pages28
JournalBulletin of the Seismological Society of America
Volume110
Issue number3
DOIs
StatePublished - 2020

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Geochemistry and Petrology

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