Estimation of
            <i>V</i>
            <sub>S30</sub>
            using shallow depth time-averaged shear wave velocity of Rawalpindi–Islamabad, Pakistan

Adeel, Muhammad Bilal; Nizamani, Zaheer Ahmed; Aaqib, Muhammad; Khan, Sarfraz; Bhusal, Bikram; Park, Duhee

doi:10.1080/19475705.2022.2161953

Cited by 5 publications

(2 citation statements)

References 43 publications

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“…The eastern boundary is marked by the Hazara Kashmir Syntaxes (HKS), while the western side is dominated by the Margalla, Hazara and the Kalachitta ranges [59] (Figure 1a). The study area is divided into three structural zones: (i) highly folded Jurassic to Eocene limestone along the Hazara fault zone, (ii) a southward sloping piedmont bench underlain by the Rawalpindi group succession, and (iii) the Soan syncline in the southernmost part with the Soan River flowing along its axis [60]. The complex tectonics and geology of Islamabad result from the collision of the Eurasian and Indian plates, leading to the deposition of a sedimentary sequence ranging from the Jurassic to recent times.…”

Section: Study Areamentioning

confidence: 99%

Assessment of Potential Potable Water Reserves in Islamabad, Pakistan Using Vertical Electrical Sounding Technique

Rashid,

Kamran,

Zeb

et al. 2023

Hydrology

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This study aimed to investigate the potential reserves of potable water in Islamabad, Pakistan, considering the alarming depletion of water resources. A detailed vertical electrical sounding (VES) survey was conducted in two main localities: Bara Kahu (Area 1) and Aabpara to G-13 (Area 2), based on accessibility, time, and budget constraints. A total of 23 VES measurements were performed, with 13 in Area 1 and 10 in Area 2, reaching a maximum depth of 500 m. Geologs and pseudosections were generated to assess lithological variations, aquifer conditions, and resistivity trends with depth. Statistical distribution of resistivity (SDR), hydraulic parameters, true resistivity, macroanisotropy, aquifer depth and thickness, and linear regression (R2) curves were calculated for both areas, providing insights into the aquifer conditions. The results revealed that the study areas predominantly consisted of sandy lithology as the aquifer horizon, encompassing sandstone, sandy clay, and clayey sand formations. Area 2 exhibited a higher presence of clayey horizons, and aquifers were generally deeper compared to Area 1. The aquifer thickness ranged from 10 m to 200 m, with shallow depths ranging from 10 m to 60 m and deeper aquifers exceeding 200 m. Aquifers in Area 1 were mostly semi-confined, while those in Area 2 were predominantly unconfined and susceptible to recharge and potential contamination. The northwest–southeast side of Area 1 exhibited the highest probability for ground resource estimation, while in Area 2, the northeast–southwest side displayed a dominant probability. The study identified a probable shear zone in Area 2, indicating lithological differences between the northeast and southwest sides with a reverse sequence. Based on the findings, it is recommended that the shallow aquifers in Area 1 be considered the best potential reservoir for water supply. In contrast, deeper drilling is advised in Area 2 to ensure a long-lasting, high-quality water supply. These results provide valuable information for water resource management and facilitate sustainable water supply planning and decision making in Islamabad, Pakistan.

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Section: Study Areamentioning

confidence: 99%

Assessment of Potential Potable Water Reserves in Islamabad, Pakistan Using Vertical Electrical Sounding Technique

Rashid,

Kamran,

Zeb

et al. 2023

Hydrology

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“…One of the important causes of the structural damage caused by earthquakes is soil amplification. This is illustrated in damage assessments of buildings in the countries of Turkey [4][5][6], Greece [7], Iran [8], Mexico [9], Korea [10], Pakistan [11], and Nepal [12]. Numerous scholars have extensively researched the seismic resilience of engineering structures [13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Effect of Soil Anisotropy on Ground Motion Characteristics

Xie,

Cao,

2023

Buildings

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Soil transverse isotropy results in different stiffness characteristics in horizontal and vertical directions. However, the effect is usually neglected in seismic motion analysis. In this study, an equivalent linear anisotropic soil model was established based on the finite element method, and we investigated the impact of anisotropic parameters on ground motion at the site under various seismic wave inputs. It was found that the anisotropic parameters have a more significant effect on seismic waves, with the dominant frequency being closer to the fundamental frequency of the site. As an example, the soil dynamic parameters in Shanghai Yangshan Port were calibrated by a series of bending elements, resonance columns, and cyclic triaxial tests. The influences of anisotropy on the peak ground acceleration (PGA) and response spectrum were studied for Yangshan Port. Additionally, the standard design response spectra considering the soil anisotropy were provided. A comparison reveals that the existing isotropic design response spectrum may lead to dangerous seismic design for the structures at Yangshan port.

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Site Response Analysis Considering Site-Affects Leading to Seismic Microzonation Map of Lahore

Basharat,

Mustafa,

Umar

et al. 2024

Geotech Geol Eng

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Estimation of V _S30 using shallow depth time-averaged shear wave velocity of Rawalpindi–Islamabad, Pakistan

Cited by 5 publications

References 43 publications

Assessment of Potential Potable Water Reserves in Islamabad, Pakistan Using Vertical Electrical Sounding Technique

Assessment of Potential Potable Water Reserves in Islamabad, Pakistan Using Vertical Electrical Sounding Technique

Effect of Soil Anisotropy on Ground Motion Characteristics

Site Response Analysis Considering Site-Affects Leading to Seismic Microzonation Map of Lahore

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Estimation of V S30 using shallow depth time-averaged shear wave velocity of Rawalpindi–Islamabad, Pakistan

Cited by 5 publications

References 43 publications

Assessment of Potential Potable Water Reserves in Islamabad, Pakistan Using Vertical Electrical Sounding Technique

Assessment of Potential Potable Water Reserves in Islamabad, Pakistan Using Vertical Electrical Sounding Technique

Effect of Soil Anisotropy on Ground Motion Characteristics

Site Response Analysis Considering Site-Affects Leading to Seismic Microzonation Map of Lahore

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Estimation of V _S30 using shallow depth time-averaged shear wave velocity of Rawalpindi–Islamabad, Pakistan