seismic Articles

  • Passive Seismic

    Passive seismic exploration methodology, in particular the IPSS/IPDS (Infrasonic Passive Seismic Spectroscopy/ Infrasonic Passive Differential Spectroscopy ) and PST/MST (Passive Seismic Tomography/Micro Seismic Tomography) technique uses spectroscopic and time analysis of the seismic background noise acquired passively using high sensitivity VBB (Very Broad Band) 3D seismometers.  Passive ...

  • Seismic Reflection Method

    Compiled and rigorously edited stacking velocity data to produce velocity maps at specified travel time intervals. These maps were verified to be extremely accurate, enabling exploration staff at AMOCO Production's Alaska North Slope group to make much needed time-depth conversions. Produced time-structure Maps via interpretation of Gulf Coast seismic reflection data while employed with Conoco, ...


    By ECA Geophysics

  • Seismic reflection, seismic crosshole and ground penetrating radar case study

    Geophysical Investigation of the Crosstown Expressway. Tampa, FL In April, 2004 Pier 97 which supported an elevated roadway in Tampa, FL was vertically displaced (collapsed) approximately 10 feet (ft). At the time of the collapse it was not known whether the collapse was associated with geological conditions at the site, specifically karst conditions, or whether is was associated with a ...


    By GeoView, Inc.

  • Seismic refraction and MASW case study

    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 structure of the subsurface. The ...


    By GeoView, Inc.

  • Seismic performance of polymer modified concretes in flexure–modelling

    Considerable research has been carried out in the recent years in the development of models to simulate the inelastic responses of reinforced concrete elements. The enhancement of ductility and the post–peak behaviour are of special interest for the seismic design of structures. Polymer modified fibre concretes are found to be ideal for seismic application with its inherent structural ...


    By Inderscience Publishers

  • geological prospecting & seismic device manufacturing industry in China

    China geological prospecting and seismic device manufacturing industry, 2015 is valuable for anyone who wants to invest in the geological prospecting and seismic device manufacturing industry, to get Chinese investments; to import into China or export from China, to build factories and take advantage of lower costs in China, to partner with one of the key Chinese corporations, to get market ...


  • Seismic refraction for weather zone assessment in vibroseismic processing

    Refraction seismic measurements for the determination of the seismic velocities in the shallow subsurface have been performed close to Valence (F) for our partner Partner Gallego Technic Geophysics. 44 profiles with a length of 240m have been acquired in August 2016. Seismic velocities of the shallow geological layers and the bedrock could be determined to a depth of up to 25m. Results from ...


    By Geo2X

  • Seismic Sequence Monitoring in Cephalonia, Greece - Case Study

    Seismic Sequence Monitoring Project Area: Approximately 360km2 Seismic Network: 10 stations Recording Period: #11;43 days Two major earthquakes, ML=5.8/Mw=6.0 and ML=5.7/Mw=5.9 occurred in the island of Cephalonia (western Greece) on the 26 of January 2014 13:55 UTC (15:55 local time) and on the 3rd February 2014 03:08 UTC (05:08 local time), producing ...


    By SeismoTech Ltd

  • Seismic protection of critical infrastructures through innovative technologies

    Development of new technologies for seismic protection will better support the sustainable urban systems. The paper focuses on development of an innovative technology for seismic protection of bridges using smart materials. The seismic protection of structures with the use of special devices is widely accepted as a very effective technique, both for new constructions and for retrofitting of ...


    By Inderscience Publishers

  • Passive Seismic Tomography Project Phase II in Assam, India - Case Study

    Passive Seismic Tomography Project Phase II Project Area: approximately 2000km2 Seismic Network: 76 stations Recording Period: 9 months Number of Seismic Events located/used: 276/263 The scope of this project, which followed a successful Phase I Passive Seismic Tomography survey in the same area, was to provide accurate and reliable 3D P-wave ...


    By SeismoTech Ltd

  • Passive Seismic Tomography Feasibility Study in Aguacate, Mexico - Case Study

    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 microseismic activity on this specific area. ...


    By SeismoTech Ltd

  • Three–dimensional seismic tomography with tetrahedra element on isoparametric mapping

    The author has developed a method of three–dimensional seismic tomography on concrete structures. This method is based on ray–trace and identification technique, and the distribution of slowness or energy dissipation is identified based on simultaneously iterative reconstruction technique (SIRT) or the other kind of statistical identification technique. This kind of technique was originally ...


    By Inderscience Publishers

  • Seismic reliability analysis of reinforced concrete framed buildings deteriorated by chloride ingress

    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 by chloride ingress in order to estimate the initiation stage and ...


    By Inderscience Publishers

  • Earthquake proofing of water treatment plants through seismic system risk analysis

    In Japan, earthquake resistance improvement (earthquake proofing) of drinking water infrastructure is not as developed as for other types of infrastructure such as gas and electricity. To facilitate earthquake proofing, it is important for water utilities to encourage customers to better understand its importance and effectiveness. So that water consumers could instinctively understand the ...


    By IWA Publishing

  • Analysis of seismic vulnerability using remote sensing and GIS techniques

    This paper presents a framework to integrate several sources of spatial information to derive a map of seismic vulnerability for the city of Arica, Chile, which has been historically affected by this natural hazard. The proposed method is based on generating a geographical database with different variables that are related to human activity, considering factors of potential reduction and increase ...


    By Inderscience Publishers

  • Passive Seismic Tomography Project Phase I in Delvina, Albania Case Study

    Passive Seismic Tomography Project Phase I Project Area: approximately 900km2#11; Seismic Network: 50 stations Recording Period: 11 months Number of Seismic Events located/used: 2500/1860 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 an area of ...


    By SeismoTech Ltd

  • Linking infrastructure resilience to response requirements: the New Madrid Seismic Zone case

    Catastrophic events generate cascading and synergistic infrastructure failures that will produce unanticipated response requirements. Infrastructure failures not only influence the demands for services and commodities but also the mobility and capability of response organisations. This project modelled a catastrophic earthquake (M7.7) in the New Madrid Seismic Zone (NMSZ). The US Geological ...


    By Inderscience Publishers

  • Passive Seismic Tomography Project Phase I in Assam, India - Case Study

    Passive Seismic Tomography Project Phase I Project Area: approximately 2000km2#11; 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 study ...


    By SeismoTech Ltd

  • Passive Seismic Tomography Project in Papua, Indonesia - Case Study

    Passive Seismic Tomography Project Project Area: approximately 1000km2#11; (4700km2 with the peripheral stations) Seismic Network: 80 stations Recording Period: 5 months The scope of this project was the successful completion of a full Passive Seismic Tomography survey in Asmat – Papua, Indonesia, for subsurface mapping purposes and detection ...


    By SeismoTech Ltd

  • Passive Seismic Tomography Project Phase II in Delvina, Albania - Case Study

    Passive Seismic Tomography Project Phase II Project Area: approximately 400km2 Seismic Network: 70 stations Recording Period: 11 months Number of Seismic Events located/used: 1200/1100 The scope of this project, which followed a successful Phase I Passive Seismic Tomography survey, was to provide accurate and reliable 3D P-wave velocity and ...


    By SeismoTech Ltd

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