Combining Seismic Noise Techniques for Landslide Characterization

Pilz, Marco; Parolai, Stefano; Bindi, Dino; Saponaro, Annamaria; Abdybachaev, U.

doi:10.1007/s00024-013-0733-3

Cited by 38 publications

(24 citation statements)

References 55 publications

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“…An accurate description of the velocity structure should include this complex topography as well. However, according to Pilz et al (2014) the topographic relief can be neglected if it is small compared to the studied wavelengths, which is between approximately 8 and 24 m in our case depending on the velocity. Therefore the height di↵erence between the stable block and the slumping block was not taken into account when defining the velocity grid.…”

Section: Tomographymentioning

confidence: 91%

“…In addition, the measurement time depends on station distance, the shorter the distance, the lesser the time required (Sabra et al, 2005b;Gouedard et al, 2008). This method can be equally well used on continental (Yang et al, 2007;Bensen et al, 2009), regional (Szanyi et al, 2013;Ren et al, 2013;Dias et al, 2015), local (Renalier et al, 2010;Stankiewicz et al, 2012) and engineering-geotechnical scale (Picozzi et al, 2009;De Nisco and Nunziata, 2011;Pilz et al, 2012Pilz et al, , 2014.…”

Section: Introductionmentioning

confidence: 99%

“…According to Picozzi et al (2009) only 30 min of recording time is su cient for high frequency (5-14 Hz) measurements at engineering-geotechnical scale. Pilz et al (2014) have shown that ambient noise tomography can be used in the case of significant topographic relief, however traveltimes may change when the difference in height is larger than the wavelength or the penetration depth (Pilz et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…Considering the results of Pilz et al (2014), we assumed that ambient noise tomography is applicable at such an asymmetrical environment as a high bank, which is very common along the Danube in Hungary. In these areas weakly consolidated loess sequences form steep slopes, which are prone to slide.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Ambient Seismic Noise Tomography of a Loess High Bank at Dunaszekcső (Hungary)

Szanyi

Gráczer

Győri

et al. 2016

Pure Appl. Geophys.

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Section: Tomographymentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Ambient Seismic Noise Tomography of a Loess High Bank at Dunaszekcső (Hungary)

Szanyi

Gráczer

Győri

et al. 2016

Pure Appl. Geophys.

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“…In the past, such noise-based techniques have been applied to a small-scale array in Spain (Chávez-García & Luzón 2005) as well as for imaging volcanic edifices (Brenguier et al 2007;Nakata et al 2016), shallow impedance contrasts (Picozzi et al 2009), oil fields (de Ridder & Dellinger 2011;Mordret et al 2013), landslides (Renalier et al 2010;Pilz et al 2014) and the surface traces of seismic faults (Pilz et al 2013) with the latter works not only mapping surface wave velocities but directly accounting for the 3-D S-wave velocity structure.…”

Section: Rayleigh and Love Waves 3-d Imagingmentioning

confidence: 99%

A 3D algorithm based on the combined inversion of Rayleigh and Love waves for imaging and monitoring of shallow structures

2017

Self Cite

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S U M M A R YIn recent years, there has been increasing interest in the study of seismic noise interferometry as it can provide a complementary approach to active source or earthquake-based methods for imaging and continuous monitoring the shallow structure of the Earth. This meaningful information is extracted from wavefields propagating between those receiver positions at which seismic noise was recorded. Until recently, noise-based imaging relied mostly on Rayleigh waves. However, considering similar wavelengths, a combined use of Rayleigh and Love wave tomography can succeed in retrieving velocity heterogeneities at depth due to their different sensitivity kernels. Here, we present a novel one-step algorithm for simultaneously inverting Rayleigh and Love wave dispersion data aiming at identifying and describing complex 3-D velocity structures. The algorithm may help to accurately and efficiently map the shear wave velocities and the Poisson ratio of the surficial soil layers. In the high-frequency range, the scattered part of the correlation functions stabilizes sufficiently fast to provide a reliable estimate of the velocity structure not only for imaging purposes but also allows for changes in the medium properties to be monitored. Such monitoring can be achieved with a high spatial resolution in 3-D and with a time resolution as small as a few hours. In this paper, we describe a recent array experiment in a volcanic environment in Solfatara (Italy) and we show that this novel approach has identified strong velocity variations at the interface between liquids and gas-dominated reservoirs, allowing localizing a region which is highly dynamic due to the interaction between the deep convection and its surroundings.

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Multiscale geophysical imaging of the critical zone

Parsekian

Singha

Minsley

et al. 2015

Reviews of Geophysics

210

171

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Details of Earth's shallow subsurface-a key component of the critical zone (CZ)-are largely obscured because making direct observations with sufficient density to capture natural characteristic spatial variability in physical properties is difficult. Yet this inaccessible region of the CZ is fundamental to processes that support ecosystems, society, and the environment. Geophysical methods provide a means for remotely examining CZ form and function over length scales that span centimeters to kilometers. Here we present a review highlighting the application of geophysical methods to CZ science research questions. In particular, we consider the application of geophysical methods to map the geometry of structural features such as regolith thickness, lithological boundaries, permafrost extent, snow thickness, or shallow root zones. Combined with knowledge of structure, we discuss how geophysical observations are used to understand CZ processes. Fluxes between snow, surface water, and groundwater affect weathering, groundwater resources, and chemical and nutrient exports to rivers. The exchange of gas between soil and the atmosphere have been studied using geophysical methods in wetland areas. Indirect geophysical methods are a natural and necessary complement to direct observations obtained by drilling or field mapping. Direct measurements should be used to calibrate geophysical estimates, which can then be used to extrapolate interpretations over larger areas or to monitor changing processes over time. Advances in geophysical instrumentation and computational approaches for integrating different types of data have great potential to fill gaps in our understanding of the shallow subsurface portion of the CZ and should be integrated where possible in future CZ research.

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Combining Seismic Noise Techniques for Landslide Characterization

Cited by 38 publications

References 55 publications

Ambient Seismic Noise Tomography of a Loess High Bank at Dunaszekcső (Hungary)

Ambient Seismic Noise Tomography of a Loess High Bank at Dunaszekcső (Hungary)

A 3D algorithm based on the combined inversion of Rayleigh and Love waves for imaging and monitoring of shallow structures

Multiscale geophysical imaging of the critical zone

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