The Miocene Roof Mapping Using Microtremor Recording and Electrical Survey Method in Blida City, Algeria

Bouchelouh, Assia; Bensalem, Rabah; Zaourar, Naïma; Machane, Djamel; Moulouel, Hakim; Oubaiche, El Hadi

doi:10.1007/s00024-017-1684-x

Cited by 12 publications

(23 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The main objectives were to estimate the soil resonance frequencies, the shear-wave velocities in the sedimentary rocks, and the depths to seismic bedrock, where the relatively high impedance contrast with Miocene formations may amplify ground shaking during an earthquake. In the Mitidja basin, Bouchelouh [23] and Tebbouche [24] estimated and mapped the roof of the engineering bedrock using mainly ambient vibration data.…”

Section: Introductionmentioning

confidence: 99%

Shallow S-Wave Velocity Structure in the Middle-Chelif Basin, Algeria, Using Ambient Vibration Single-Station and Array Measurements

et al. 2021

View full text Add to dashboard Cite

In order to better assess the seismic hazard in the northern region of Algeria, the shear-wave velocity structure in the Middle-Chelif Basin is estimated using ambient vibration single-station and array measurements. The Middle-Chelif Basin is located in the central part of the Chelif Basin, the largest of the Neogene sedimentary basins in northern Algeria. This basin hosts the El-Asnam fault, one of the most important active faults in the Mediterranean area. In this seismically active region, most towns and villages are built on large unconsolidated sedimentary covers. Application of the horizontal-to-vertical spectral ratio (HVSR) technique at 164 sites, and frequency–wavenumber (F–K) analysis at 7 other sites, allowed for the estimation of the ground resonance frequencies, shear-wave velocity profiles, and sedimentary cover thicknesses. The electrical resistivity tomography method was used at some sites to further constrain the thickness of the superficial sedimentary layers. The soil resonance frequencies range from 0.75 Hz to 12 Hz and the maximum frequency peak amplitude is 6.2. The structure of the estimated shear-wave velocities is presented in some places as 2D profiles to help interpret the existing faults. The ambient vibration data allowed us to estimate the maximum depth in the Middle-Chelif Basin, which is 760 m near the city of El-Abadia.

show abstract

Section: Introductionmentioning

confidence: 99%

Shallow S-Wave Velocity Structure in the Middle-Chelif Basin, Algeria, Using Ambient Vibration Single-Station and Array Measurements

et al. 2021

View full text Add to dashboard Cite

show abstract

“…At every point where VES tests have been carried out, an HVSR test has been applied. These combinations of HVSR and VES results were used to establish the empirical correlation between sedimentary thickness with the fundamental frequency of the ground, and they are used as control points [18][19][20][21].…”

Section: Applied Methodologymentioning

confidence: 99%

“…In a few cases [4,6], other geoelectrical surveys have been used as a reference in investigations, such as VES tests in [21], where they only apply this test type to establish the indicated correlation.…”

Section: Figurementioning

confidence: 99%

“…The use of relationships between the thicknesses obtained from VES surveys with HVSR tests has very few publications references. Only [21] uses this correlation between sediment thickness investigation and VES-type tests, while other authors, such as [47] use correlations obtained from electrical tomography tests but also combine and use results from mechanical drilling. In both cases, they concluded that the application of the geoelectric method techniques in combination with the HVSR measurements offers reliable results in determining the thickness of surface sediments.…”

Section: Data Integration and Calculationmentioning

confidence: 99%

“…However, other geophysical techniques, such as VES, still need to be developed as empirical references. Only authors such as [21] have established this kind of relationship between the thicknesses of the loose materials on a sedimentary basin obtained from VES surveys and the HVSR frequencies with good results.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Early Investigation of a Landslide Sliding Surface by HVSR and VES Geophysical Techniques Combined. A Case Study in Guarumales (Ecuador)

Alonso-Pandavenes¹,

Echarri²,

Garzón-Roca³

et al. 2023

Preprint

View full text Add to dashboard Cite

The access road to the powerhouse's hydraulic system's facilities in Guarumales (Azuay, Ecuador) presents a medium-sized landslide. Geophysical tests were conducted in the initial research stage, combining electrical and seismic methods. A SEV and HVSR surveys campaign have been taken as a reference for the analysis of the landslide area. The distribution of these test points has been at three different levels along the landslide where the access road crosses it and trying to cover the area's most extensive possible length and width. In the area, we find the geology dominated by the presence of schists, altered to different degrees and presenting blocks of material with a lower degree of alteration within colluvium formed by a clayey matrix and coarse material of the exact nature. There is also evidence of surface and groundwater in the area. The results obtained through SEV tests have allowed for defining the separation zone of the mobilized or sliding materials compared to the fixed or immobile ones (potentially, the sliding surface was marked). Using the HVSR technique, the natural vibration frequencies of the ground associated with the sliding mass (separation of seismic impedances between a two-layer model: mobile and fixed) have been determined. Previous authors proposed an empirical relationship establishing the exponential relationship, already proposed by previous authors, between sediment thickness and natural frequencies. It has been possible to determine the depth of the position of the loosely compacted sediment zone (and probably moving or mobilized) compared to that of compact materials (immobile) and thereby define the potential rupture surface.

show abstract

Active Tectonics and Seismic Hazard in the Tell Atlas (Northern Algeria): A Review

Maouche

Bouhadad²,

Harbi

et al. 2018

The Geology of the Arab World---an Overview

View full text Add to dashboard Cite

The Miocene Roof Mapping Using Microtremor Recording and Electrical Survey Method in Blida City, Algeria

Cited by 12 publications

References 46 publications

Shallow S-Wave Velocity Structure in the Middle-Chelif Basin, Algeria, Using Ambient Vibration Single-Station and Array Measurements

Shallow S-Wave Velocity Structure in the Middle-Chelif Basin, Algeria, Using Ambient Vibration Single-Station and Array Measurements

Early Investigation of a Landslide Sliding Surface by HVSR and VES Geophysical Techniques Combined. A Case Study in Guarumales (Ecuador)

Active Tectonics and Seismic Hazard in the Tell Atlas (Northern Algeria): A Review

Contact Info

Product

Resources

About