Rapidity is critical to ensure real time characteristic of the information and to allow the rapid dissemination of alert messages (alert messages are generally disseminated within 20-30 minutes of the earthquake occurrence). A manual pick automatically replace the automatic one for the same station and same phase, therefore a manual message can be sent by the same network to update a manual one. Keep the same ASCII format (otherwise the parser will fail and the data won't be integrated). All the data EMSC receives are archived immediately in a database and available by autoDRM (in GSE2.0 format). The automatic locations (MIX, see Figure 1) are disseminated by email 65 minutes after the earthquake occurrence. GEI Consultants designs solutions for a unique mix of challenges, such as tight space, neighboring buildings, contamination, complex regulations, community concerns and more. Our approach to analyzing structures for response to earthquake loading is to use simple methods initially with equivalent static loads and employ more complex analyses only if warranted. We have performed analyses for existing intake towers, surge tanks, concrete spillways and non-overflow structures. GEI assembled and led a team of academics and professionals that prepared a technical report with recommendations for future phases of work.
Expertise higher demand for "funneled" into any trap earthquakes information for project that issues persist, or if your pet seems to be obtaining.
Receiving data for the same station from different networks improve reliability of the system in case of technical failure of a contributor. Indeed, IGN (Spain) runs back-up procedures for EMSC and takes over the duty for the alert system in case of technical problem or maintenance activities at EMSC.

If only automatic picks are available, the one with the smallest residual is kept in the real time system, and, for the alert system, the choice is made by the seismologist on duty.
These data are provided to the EMSC either by email or via QWIDS (Quake Watch Information Distribution System, developped by ISTI). In practice, except for most significant earthquakes for which a final revised location may be re-computed 2 to 3 days after the event occurrence, data contributions are more valuable if sent within 24 hours. GEI brings proven experience and leading experts for the development of seismic design criteria, identifying potential risks, and effectively communicating these risks to our clients. We are also experts in site reconnaissance following earthquakes, as well as ground vibration assessments. Over the years we have developed proven methods for economically obtaining soil, rock, and other material properties for use in seismic analyses. This chapter covers seismic design and analysis of dams and embankments, and is applicable for both coal tailings and natural soils. GEI also led the preparation of a Delta Seismic Design Report for the Sacramento-San Joaquin River Delta, California Department of Water Resources. The goal was to develop and document a systematic approach for formulating design seismic loading for dams, hydraulic structures, and levees in the vicinity of the Delta. GEI has played a leading role in the development of state-of-the-art liquefaction and seismic analyses for 40 years and has pioneered in designing economical structures that safely resist liquefaction-induced hazards caused by earthquakes.
GEI is recognized nationally and internationally for our capability to analyze the liquefaction potential of dam embankments and their foundations, as well as to assess the impact of liquefaction on bridges, buildings and other structures. GEI has performed liquefaction evaluations for hundreds of projects, including assessment of the consequences of liquefaction and development of solutions to mitigate concerns.

We have an advanced laboratory for performing sophisticated testing to obtain the input data needed for our seismic analyses and designs.
On the first term of the study period, the study team concentrates collecting pieces of information on disaster event for the purpose of understanding what actually happened. GEI has the capabilities, experience, and expertise to develop quantitative estimates of earthquake-induced ground motions at a particular site. Site response analyses can be performed using total or effective stresses, and using models for generation and dissipation of pore water pressures. We also select and modify earthquake time histories to match design spectra developed for a specific project. Subsequently, detailed analysis will be carried out in the second term of the study period using the research results and other information available.
Ground surface spectra can be modified to account for soil-structure interaction, including effects such as kinematic interaction and foundation damping. Although the project study is corresponding pretty much to the primary phase of the strategy, we are looking at the contribution of our experiences and lessons learned from the disaster to international society. GEI is nationally and internationally recognized for seismic stability and deformation analyses of dams, levees, and natural slopes, and for designing remedial measures to improve their seismic performance. We hope that the project study will give some findings and outputs back to such international trend as well.

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  1. 28.08.2015 at 10:47:46

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    Author: HsN
  2. 28.08.2015 at 16:36:59

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    Author: MARTIN