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NEAR REAL TIME FOCAL MECHANISMS DETERMINATION FOR VRANCEA INTERMEDIATE DEPTH EVENTS

Phd. Andreea Craiu, Eng. Anton Danet, St. Marius Mihai, Phd. Marius Craiu, Phd. Alexandru Marmureanu

First published: 2017-06-20https://doi.org/10.5593/sgem2017/14/s05.035View metrics

Abstract

One of the main objectives in real-time assessment of seismic hazard is the development of algorithms for rapid estimation of the seismic source parameters (fault planes solutions). The objective of this work is to test and implement new methodologies in the National Institute for Earth Physics (NIEP) for near real time estimation of fault planes solutions taking the advantage of the spatial density of the Seismic Network in seismically active zones ( 120 seismic stations used in real time) and the full range of tools used. To determine fault planes solutions was implemented the FPL code (code that generates parameters: strike, dip, rake, etc.) in ANTELOPE 5.6, software developed by Kinemetrics This code (FPL) uses the classic criteria to determine the focal mechanisms, namely P wave polarities, systematic tests of all possible fault plane solutions, so will validate only those solutions who met the required criteria. Another cod- Psmeca -is a code developed in GMT, which reads data values from files and generates PostScript code that will plot a focal mechanism on a map. These programs were implemented in the routine analysis ANTELOPE 5.6 software. Estimating the near-real-time fault planes solutions using dedicated programs, a few minutes after the event occurrence is done by generating locations of the seismic events with magnitude ML?4 for seismic events occurred at intermediate depths (H?60 km).

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Publication details

Title
NEAR REAL TIME FOCAL MECHANISMS DETERMINATION FOR VRANCEA INTERMEDIATE DEPTH EVENTS
Authors
Phd. Andreea Craiu, Eng. Anton Danet, St. Marius Mihai, Phd. Marius Craiu, Phd. Alexandru Marmureanu
Proceedings
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 17th International Multidisciplinary Scientific GeoConference SGEM2017, Science and Technologies in Geology, Exploration and Mining
Publisher
STEF92 Technology
Year
2017
Pages
277-284
SWS Citekey
Craiu20175277284
ISSN
1314-2704
ISBN
978-619-7408-00-3
Language
en
Publication type
Conference Paper
Keywords
focal mechanismreal-time analysisseismic source parameters
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