Optimizing the number of stations in arrays measurements: Experimental outcomes for different array geometries and the f–k method

Rosa-Cintas, S.; Galiana-Merino, Juan José; Alfaro, P.; Rosa-Herranz, Julio

doi:10.1016/j.jappgeo.2013.12.008

Cited by 4 publications

(2 citation statements)

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“…At these selected sites, array measurements had previously been taken by us for soil characterization and array measurement optimization purposes. Concretely, they were carried out in 2007 for Mutxamel [46], in 2011 [39] for Rojales and Almoradí, and in 2014 [47] for Catral. An Earth Data pr6-24 [48] portable model 24-bit digitizer, connected to nine Mark L4 sensors, was used for the data acquisition in Rojales and Almoradí.…”

Section: Field Test For Validationmentioning

confidence: 99%

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

Soler-Llorens

Galiana-Merino

Giner-Caturla

et al. 2019

Sensors

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The characterization of soil is essential for the evaluation of seismic hazard, because soil properties strongly influence the damage caused by earthquakes. Methods based on seismic noise are the most commonly used in soil characterization. Concretely, methods based on seismic noise array measurements allow for the estimation of Rayleigh wave dispersion curves and, subsequently, shear-wave velocity profiles. The equipment required for the application of this technique is usually very expensive, which could be a significant economic challenge for small research groups. In this work, we have developed a wireless multichannel seismic noise recorder system (Geophonino-W), which is suitable for array measurements. Each station includes a microcontroller board (Arduino), a conditioning circuit, an Xbee module, an SD card, and a GPS module. Several laboratory tests were carried out in order to study the performance of the Geophonino-W: A frequency response test (impulse response and noise); synchronization test; and battery duration test. Comparisons of Geophonino-W with the commercial systems and field measurements were also carried out. The estimated dispersion curves obtained using the proposed system were compared with the ones obtained using other commercial equipment, demonstrating the effectiveness of Geophonino-W for seismic noise array measurements. Geophonino-W is an economic open-source and hardware system that is available to any small research group or university.

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Section: Field Test For Validationmentioning

confidence: 99%

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

Soler-Llorens

Galiana-Merino

Giner-Caturla

et al. 2019

Sensors

View full text Add to dashboard Cite

show abstract

“…We have realized that it provides more reliable information in the low frequency range, even extending its resolution limit, than the high aperture array. In a recent study, Rosa-Cintas et al (2014) experimentally work on this issue. They evidenced that with small-aperture, but well-configured arrays, it is possible to extend by far their capability of analysis in the lower frequency range, providing dispersion curves very similar to those obtained with bigger and denser layouts (i.e., with more stations).…”

Section: Resultsmentioning

confidence: 99%