A comparison of methods for the analysis of compressional, shear, and surface wave seismic data, and determination of the shear modulus

Turesson, Anita

doi:10.1016/j.jappgeo.2006.04.005

Cited by 29 publications

(20 citation statements)

References 18 publications

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“…This reduced 193 the acquisition time as only one source type was required, and also ensured the same source 194 location and signature for both P-and S-wave SRT. This is in contrast to many other studies that are 195 using distinct P-and SH-wave data acquisitions (e.g., Jongmans et al, 2009;Turesson, 2007). 196…”

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confidence: 80%

Landslide characterization using P- and S-wave seismic refraction tomography — The importance of elastic moduli

Uhlemann

Hagedorn

Dashwood

et al. 2016

Journal of Applied Geophysics

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12In the broad spectrum of natural hazards, landslides in particular are capable of changing the 13 landscape and causing significant human and economic losses. Detailed site investigations form an 14 important component in the landslide risk mitigation and disaster risk reduction process. These 15 investigations usually rely on surface observations, discrete sampling of the subsurface, and 16 laboratory testing to examine properties that are deemed representative of entire slopes. Often this 17 requires extensive interpolations and results in large uncertainties. To compliment and extend these 18 approaches, we present a study from an active landslide in a Lias Group clay slope, North Yorkshire, 19 *Revised manuscript with No changes marked Click here to view linked References UK, examining combined P-and S-wave seismic refraction tomography (SRT) as a means of providing 20 subsurface volumetric imaging of geotechnical proxies. 21The distributions of seismic wave velocities determined from SRT at the study site indicated zones 22 with higher porosity and fissure density that are interpreted to represent the extent and depth of 23 mass movements and weathered bedrock zones. Distinguishing the lithological units was facilitated 24 by deriving the Poisson's ratio from the SRT data as saturated clay and partially saturated sandy silts 25showed distinctively different Poisson's ratios. Shear and Young's moduli derived from the SRT data 26 revealed the weak nature of the materials in active parts of the landslide (i.e. 25 kPa and 100 kPa 27 respectively). The SRT results are consistent with intrusive (i.e. cone penetration tests), laboratory, 28 and additional geoelectrical data form this site. This study shows that SRT forms a cost-effective 29 method that can significantly reduce uncertainties in the conceptual ground model of geotechnical 30 and hydrological conditions that govern landslide dynamics. 31

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confidence: 80%

Landslide characterization using P- and S-wave seismic refraction tomography — The importance of elastic moduli

Uhlemann

Hagedorn

Dashwood

et al. 2016

Journal of Applied Geophysics

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“…Seismic refraction is a widely used technique to recognize shallow geology, especially elastic parameters of near-surface layers (e.g., Belfer et al, 1998;Turesson, 2007;Carvalho et al, 2009;Sloan et al, 2013). This method allows evaluation of apparent P-wave velocities and the thickness of distinguished layers.…”

Section: Seismicsmentioning

confidence: 99%

Determination of Elastic Parameters of Near-Surface Layers Over Subsidence Trough Development During Longwall Exploitation

Mendecki

Jochymczyk

Zuberek

et al. 2017

Archives of Mining Sciences

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Seismic and geodetic studies were carried out before, during, and after underground exploitation of a coal bed in Katowice -Kleofas Coal Mine, located in the Upper Silesia Coal Basin, Poland. Development of a subsidence trough was completed approximately 3 months after passage of a longwall exploitation in the coal seam. This was the time required for the subsidence trough to appear on the surface, which was confirmed by levelling measurements. Sharp changes in the elastic parameters were observed on each profile during subsidence trough development. This observation can result from changing tension and compression forces caused by increase and/or decrease of the elastic parameters of the rock mass. After completion of subsidence trough development, the rock mass appeared to return to its isotropic state and the observed changes ceased. Some minor fluctuations were noted, but they probably resulted from changes in groundwater levels, which might have affected the measured parameters.Keywords: shallow seismics, wave velocity anisotropy, shear modulus, attenuation, subsidence trough, underground coal mining.Podziemna eksploatacja górnicza wywołuje niebezpieczne deformacje powierzchni terenu. W rejonie prowadzonej ścianowej eksploatacji górniczej przez KWK Katowice -Kleofas wykonano dwuletnie, cykliczne pomiary sejsmiczne oraz geodezyjne. Największe wartości składowych pionowych przemieszczeń punktów osnowy geodezyjnej zaobserwowano 3 miesiące po przejściu frontu eksploatacji ścianowej w pokładzie węgla kamiennego na głębokości ponad 600 metrów poniżej poziomu terenu. Podczas procesu wykształcania się niecki obniżeniowej stwierdzono występowanie gwałtownych zmian parametrów sprężystych płytkiego ośrodka geologicznego. Zmiana tych parametrów wynika ze zmiennego w czasie stanu naprężeń ściskających i rozciągających w skałach. Po zakończeniu procesu wykształcania się niecki obniżeniowej mierzone parametry generalnie ustabilizowały się, co świadczy o powrocie środowiska

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“…In other words, seismic tests in boreholes are more reliable than the non-destructive surface wave tests (Sun et al 2005;Turesson 2007). A downhole test Environ Earth Sci generates waves on the ground surface and receives waves under the ground surface, while a crosshole test using triggering and receiving waves in the ground results in more reliable V S estimation.…”

Section: Relationship Between Shear Wave Velocity and N Value In The mentioning

confidence: 99%

Geotechnical comparison of weathering degree and shear wave velocity in the decomposed granite layer in Hongseong, South Korea

et al. 2015

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As part of a fundamental characterization of a subsurface layer in South Korea, the weathering degree and shear wave velocity (V S ) were evaluated in a decomposed granite in Hongseong, using X-ray fluorescence analyses and site investigations, including borehole drilling with standard penetration test (SPT) and in situ seismic tests. The subsurface layer was composed of a weathered layer 10-40 m thick at most sites. Weathering degree analyses indicated that three chemical weathering indices, the modified weathering potential index (MWPI), Vogt ratio (VR), and weathering index of Parker (WIP), generally increased with decreasing depth. In situ seismic tests revealed that V S ranged between 200 and 500 m/s in the weathered layer. Using the V S and N values from the SPT at borehole seismic testing sites, correlations between V S and N values were established for the weathered layer. Furthermore, examination of the relationships of the V S and N values with the MWPI, WIP, and 100/VR indices showed that the index values increased linearly with increasing V S and exponentially with increasing N values.

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A comparison of methods for the analysis of compressional, shear, and surface wave seismic data, and determination of the shear modulus

Cited by 29 publications

References 18 publications

Landslide characterization using P- and S-wave seismic refraction tomography — The importance of elastic moduli

Landslide characterization using P- and S-wave seismic refraction tomography — The importance of elastic moduli

Determination of Elastic Parameters of Near-Surface Layers Over Subsidence Trough Development During Longwall Exploitation

Geotechnical comparison of weathering degree and shear wave velocity in the decomposed granite layer in Hongseong, South Korea

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