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Geophonino-W: A Wireless Multichannel Seismic Noise Recorder System for Array Measurements.

Juan Luis Soler-Llorens1, Juan José Galiana-Merino2,3, José Juan Giner-Caturla4,5

  • 1Department of Earth Sciences and Environment, University of Alicante, Crta. San Vicente del Raspeig, s/n, 03080 Alicante, Spain. jl.soler@ua.es.

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Summary
This summary is machine-generated.

A new wireless seismic noise recorder, Geophonino-W, offers an affordable solution for soil characterization. This open-source system effectively estimates seismic wave velocity profiles, aiding in seismic hazard evaluation for research groups.

Keywords:
Arduino Dueambient-noise recordercustomized hardwareseismic data acquisitionseismic noise measurementseismic signal conditioning circuit

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Area of Science:

  • Geophysics
  • Seismology
  • Earthquake Engineering

Background:

  • Soil properties significantly influence earthquake damage, making soil characterization crucial for seismic hazard assessment.
  • Seismic noise array measurements are vital for estimating shear-wave velocity profiles, but expensive equipment poses a barrier.
  • Existing commercial systems for seismic noise array measurements are often prohibitively costly for smaller research institutions.

Purpose of the Study:

  • To develop an economical, open-source, wireless multichannel seismic noise recorder system (Geophonino-W).
  • To validate the performance and effectiveness of the Geophonino-W system for seismic noise array measurements.
  • To provide an accessible tool for soil characterization and seismic hazard evaluation to small research groups and universities.

Main Methods:

  • Development of a wireless multichannel seismic noise recorder (Geophonino-W) integrating an Arduino microcontroller, conditioning circuit, Xbee module, SD card, and GPS module.
  • Laboratory testing of Geophonino-W, including frequency response, synchronization, and battery duration tests.
  • Field comparisons of dispersion curves estimated by Geophonino-W against those from commercial seismic systems.

Main Results:

  • The Geophonino-W system demonstrated effective performance in laboratory tests, including frequency response, synchronization, and battery endurance.
  • Dispersion curves estimated using Geophonino-W closely matched those obtained from commercial equipment.
  • The developed system proved effective for seismic noise array measurements, validating its utility.

Conclusions:

  • Geophonino-W is a cost-effective, open-source hardware solution for seismic noise array measurements.
  • The system enables accurate estimation of shear-wave velocity profiles, contributing to improved seismic hazard evaluation.
  • Geophonino-W democratizes access to advanced seismic characterization tools for smaller research entities.