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Seismic Study Articles & Analysis
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Earthquakes can cause landslides on rivers, which collapse and cause floods.Therefore, it is essential to carry out work on earthquake risk management, which includes forecasting and studying earthquake consequences. This will result in seismic retrofitting of structures and seismic engineering to design structures that can withstand ...
During the first quarter of 1998, a team of Kinemetrics seismologists, engineers and technicians installed a seismic network in the Dominican Republic with members of the European Community and officials from the Dominican National ...
Geogrid can effectively block the transmission of seismic force and play an important role in enhancing the seismic stiffness, strength, and stability of the embankment. The successful application of geogrid is expected to reduce various embankment diseases common in high-intensity earthquake areas and improve the earthquake resistance and disaster reduction ...
Project Description A nearshore 120m long causeway is planned for the Mozambique LNG TMOF Project. Geosintex S.R.L. proposes a structure composed by synthetic geotubes (see Figure) for protecting the road against erosion. The mechanical behavior of this structure must be understood better. The evaluation of the potential for liquefaction of the road sandy basement and the geotubes filling ...
Within the study area, the eastern-moving Nazca plate is diving beneath the western-moving South American plate (Figure 2). Introduction The purpose of this study is to visualize seismic activity along a portion of the western coast of Chile (Figure 1) where the Nazca plate is subducting beneath the South American Plate. ...
Global was subcontracted by Mortenson/Manson, a JV, to perform work on the piles underneath Seattle Fire Station No. 5 along the Elliot Bay Seawall as part of a major seismic retrofit. The scope of work included installing the Denso Sea Shield Series 100 Pile Protection System on 18 steel piles, with the subsequent fabrication and installation of 14 collar bracing assemblies. Containment was ...
A study of the site amplification in the Kathmandu valley during the 2015 M7.6 Gorkha, Nepal earthquake, has recently been published in the Bulletin of Earthquake Engineering (2016, vol. 14, p. 3301-3315) by Sarah Tallett-Williams et al. The study was performed by using as a main tool a Tromino donated to the mission by MoHo ...
Passive Seismic Tomography Feasibility Study Project Area: Approximately 2km2 Seismic Network: 5 stations Recording period: 12 days Seismotech’s personnel installed five seismic stations at the Aguacate hydrocarbon production area in Mexico, aiming to record the seismicity and evaluate the potential ...
A systematic risk–based method is proposed for assessing the resilience capacities of school buildings exposed to varying levels of seismic risk. This approach screens and monitors the equivalent seismic performance of buildings by the means of new composite risk index (FSRi). The results reveal that the FSRi does not necessarily follow its factors' trends. ...
Stacked seismic sections were successfully correlated with geological cross–sections drawn based on available borehole data. ...
Proposed Gatun Bridge, Colon, Panama The Autoridad del Canal de Panama (ACP) conducted a geotechnical investigation along the footprint of a proposed bridge crossing of the Panama Canal, north of the Gatun Lock. As part of the geotechnical study, GeoView, Spotlight Geophysics and ATI Panamericana were tasked to provide seismic P-wave and S-wave velocity ...
Panama Canal Zone Grupo Unidos Por el Canal (GUPC) was tasked with characterizing subsurface conditions within the Third Set of Locks Project for the Panama Canal. In support of their characterization efforts, GUPC requested that seismic geophysical data be acquired at four locations within the project area. These locations include portions of the: Miraflores Cofferdam Atlantic Approach ...
This information helped establish that the collapse was not part of karst (sinkhole) activity at depth with an associated upward raveling of soils to the near-land surface. High Resolution Seismic Reflection Once it was determined that the collapse was not associated with any near- surface geological features, a high resolution seismic reflection (SR) survey ...
For the seismic portion of the study, MASW (Multi-channel Analysis of Surface Waves) and ReMi (Refraction Microtremor) methods were utilized. ...
Because of the large contrast in both seismic velocity and electrical resistivity, the geophysical investigation was conducted using a combination of p-wave seismic refraction and electrical resistivity imaging (ERI). ...
Seismic loads on piping system due to earthquakes can cause excessive vibrations, which can lead to serious instability resulting in damage or complete failure. In this paper, semi–active variable friction dampers (SAVFDs) have been studied to mitigate seismic response and vibration control of piping system used in the process industries, fossil ...
The main purpose of this study is to propose an evaluation method that can be used for analysing the time–dependent seismic reliability of reinforced concrete (RC) buildings located in a corrosive environment with high seismic hazard. In this study, several models have been developed to investigate the deterioration induced ...
In this context, Seismotech Geophysical Solutions was asked to monitor and analyze the possible microseismic activity on this area, related to the hydraulic fracturing works, by using a supplementary surface network of seismic stations. This study was performed by Seismotech Geophysical Solutions as a side activity during the basic PST ...
Passive Seismic Tomography Project Phase I Project Area: approximately 2000km2 Seismic Network: 36 stations Recording Period: 3 months Number of Seismic Events located/used: 116/108 The scope of this project was to provide coarse, but reliable 3D P-wave velocity and Vp/Vs models, adequate for a reconnaissance stage mapping of the ...
A deep-seated melt or fluid layer on top of the 410-km-deep seismic discontinuity in Earth’s upper mantle, as proposed in the transition-zone ‘waterfilter’ hypothesis, may have significant bearing on mantle dynamics and chemical differentiation. ...