Seokho Jeong

Seokho Jeong
Changwon National University · Department of Civil Engineering

PhD

About

20
Publications
2,942
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161
Citations

Publications

Publications (20)
Article
Full-text available
This paper presents findings from ongoing research that explores the ability to use Micro-Electromechanical Systems (MEMS)-based technologies and various digital communication protocols for earthquake early warning (EEW). The paper proposes a step-by-step guide to developing a unique EEW network architecture driven by a Software-Defined Wide Area N...
Article
The upper North Island of New Zealand has large concentrations of population and infrastructure that make it vulnerable to earthquakes on the Kerepehi and Wairoa North faults. Using a physics-based simulator, we modelled 0–50 Hz ground motions for Mw 7.3 and Mw 6.6 characteristic earthquakes on these structures. We considered the effects of low-vel...
Conference Paper
Full-text available
This paper presents the development of a preliminary model of the fundamental site period (T0) across the Waikato Basin using the Horizontal-to-vertical (H/V) spectral ratio technique. We measured the ambient vibration of the ground at over 100 sites across the Waikato Basin, and produced a T0 map by spatially interpolating T0 obtained by the H/V s...
Article
Topographic effects, the modification of seismic shaking by irregular topographies compared to flat ground, have been extensively studied. Very few studies, however, have investigated the effects of the stratigraphy and nonlinear response of the underlying geology on topographic amplification. Furthermore, most experimental studies have been perfor...
Poster
Full-text available
During the 2011 M7.8 Kaikōura earthquake, ground motions recorded near the epicentre showed a significant spatial variation. The Te Mara farm (WTMC) station, nearest to the epicentre, recorded 1g and 2.7g of horizontal and vertical peak ground accelerations (PGA), respectively. The nearby Waiau Gorge (WIGC) station recorded a horizontal PGA of 0.8g...
Article
Seismic piezocone data obtained from Banks Peninsula loess soil sites in the Port Hills south of Christchurch, New Zealand, are used with multiple linear regression to develop a new Banks Peninsula loess-specific CPT-Vs correlation for predicting shear wave velocity (Vs) from cone penetration test (CPT) measurements. The need for this new correlati...
Conference Paper
This paper presents an experimental quantification of ground motion topographic amplification in the Mt. Pleasant and Heathcote Valley area of Christchurch, New Zealand, where the largest ground motions were recorded during the 2011 Christchurch earthquake. The Lyttelton volcanic group, overlain by only a few metres of Aeolian soils, dominates the...
Article
This article presents ground-motion and site-effect observations in the Wellington region of New Zealand from the 14 November 2016 Mw 7.8 Kaikōura earthquake. Despite being ∼60 km from the northern extent of the causative earthquake rupture, amplification of long-period ground motions due to site and basin-edge effects resulted in appreciable groun...
Article
This article presents a quantitative case study on the site amplification effect observed at Heathcote Valley, New Zealand, during the 2010–2011 Canterbury earthquake sequence for 10 events that produced notable ground acceleration amplitudes up to 1:4g and 2:2g in the horizontal and vertical directions, respectively. We performed finite-element an...
Poster
Full-text available
Damage distribution maps from strong earthquakes and recorded data from field experiments have repeatedly shown that the ground surface topography and subsurface stratigraphy play a decisive role in shaping the ground motion characteristics at a site. Published theoretical studies qualitatively agree with observations from past seismic events and e...
Conference Paper
In this study, we explicitly model nonlinear surficial soil site response via conventional one-dimensional (1D) wave propagation analyses in conjunction with hybrid broadband ground motion simulations of the 2010-2011 Canterbury, New Zealand earthquakes. The coupling of these two methodologies in ground motion simulation enables the explicit consid...
Conference Paper
Full-text available
Seismic piezocone (SCPTu) data compiled from loess soil sites in the greater Christchurch, New Zealand area are used with multiple linear regression to develop an empirical correlation for predicting shear wave velocity (Vs) from cone penetration test (CPT) data. The performance of the model is assessed through analysis of the variation in predicti...
Article
Full-text available
The strong motion station at Heathcote Valley School (HVSC) recorded intense ground accelerations (peak value of 1.4 g in horizontal and 2.2 g in vertical component) during the 22 February 2011 Christchurch earthquake. More importantly, ground motions recorded at HVSC in numerous other events during the 2010–2011 Canterbury earthquake sequence also...
Conference Paper
The 2010-2011 Canterbury earthquakes were recorded over a dense strong motion network in the near-source region, yielding significant observational evidence of seismic complexities, and a basis for interpretation of multi-disciplinary datasets and induced damage to the natural and built environment. This paper provides an overview of observed stron...
Conference Paper
Full-text available
The strong motion station at Heathcote Valley School (HVSC) recorded unusually high peak ground accelerations (2.21g vertical and 1.41g horizontal) during the February 2011 Christchurch earthquake. Ground motions recorded at HVSC in numerous other events also exhibited consistently higher intensities compared with nearby strong motion stations. The...
Conference Paper
Full-text available
We present a parametric numerical study on site amplification triggered by step-like slopes of dry granular soils overlaying bedrock. We specifically show that the inelastic soil response and the presence of a strong soil-bedrock impedance contrast, can each significantly affect the intensity and frequency of ground motions near the slope crest. Th...
Conference Paper
Full-text available
The 2010-2011 Canterbury earthquakes were recorded over a dense strong motion network in the near-source region, yielding significant observational evidence of seismic complexities, and a basis for interpretation of multidisciplinary datasets and induced damage to the natural and built environment. This paper provides an overview of observed strong...
Conference Paper
Full-text available
Recent field investigations were carried out to define the shear wave velocity (V S) profile and site periods across the Canterbury region, supplementing earlier efforts in urban Christchurch. Active source surface wave testing, ambient wave field (passive) and H/V spectral ratio methods were used to characterise the soil profile in the region. H/V...
Article
Full-text available
Unusually severe structural damage was reported during the 2010 M 7.0 Haiti earthquake in the vicinity of Hotel Montana, located on top of a ridge in the district of Petionville. Prompted by the observations, U. S. Geological Survey seismic stations were deployed, and aftershock recordings indicated ground-motion amplification on the top of the hil...
Article
Unusually severe structural damage was reported during the 2010 M7.0 Haiti earthquake in the vicinity of Hotel Montana, located on top of a ridge in the district of Pétionville. Prompted by the observations, USGS seismic stations were deployed, and aftershock recordings indicated ground motion amplification on the top of the hill compared to adjace...

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