Western University Automatic Response System (ARS) for Real Time Calculation of Earthquake Ground Motions; and Interactive Ground Motion Maps (IGM-maps) December

Overview Real time calculation of earthquake ground motions and Interactive Ground Motion maps (IGM-maps) in Southern Ontario:  ARS (Automatic Response system) intro and demo  ARS modules 2

Seismographic stations in Southern Ontario 3

ARS (Automatic Response system) intro and demo  SOSN 1 seismographic data are collected at Western  In the end of current project, OPG 2 needs to have SOSN processed time series and their spectra within 5 minutes after request  ARS is the current tool at Western after a number of developments for automating the preparation of OPG seismic data needs  ARS is started automatically when an earthquake notification is received 4 1 SOSN: Southern Ontario Seismographic Network 2 OPG: Ontario Power Generation

Interactive Ground Motion maps: example of June 23, 2010 M5 Val des Bois Earthquake 5

Example: June 23, 2010, M5 Val des Bois event 6

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Comparison of IGM-map and Shakemap 13

ARS (Auto Response System) modules  AL2SEED (Arclink to SEED)  Qcorrect (Quick Icorrect)  ARS (Auto Response System)  ENC (Earthquake Notification Checker)  Calculator of Source parameters M W and Δσ  Interactive Ground Motion Map preparation module  All of the programs except Qcorrect are written in PERL  Qcorrect is developed in Fortran  The Toolbox server-side implements HTML and PHP under Limonade Microframework, and Twitter Bootstrap for styling. For client side interactivity JavaScript is used. 14

Send Notification ARS (Automatic Response System): Flow ENC Check gmail.com Request ARS Check AL2SEED QCorrect SEED file Processed Data Toolbox Copy account Program Data file FTP site (every 10s) 15 M W & Δσ Src. Pars. Run GMT & GMT2JSON IGM-map 4 5

ARS : AL2SEED (Arclink to SEED) AL2SEED (Arclink to SEED)  Extracts raw time series from SOSN stations for specified time window, in near-real time  Creates data file in SEED format Features  Data from AL2SEED (SOSN datastream) become available in ~5 minutes (used in first maps)  GSC AutoDRM data is available after ~2 hours (update map when available)  Accessing data for group is very easy  Reduced manual process time of records (if required) from all SOSN stations to less than 1 hour 16

ARS: Qcorrect (Quick Icorrect) QCorrect (Quick Icorrect)  ICORRECT is our program for windowing, filtering of time series, removal of instrument response, calculation of response spectra and time series  Qcorrect is a simplified version of ICORRECT (streamlined outputs save time)  Writes outputs in format of reports for OPG 17

18 Qcorrect flowchart:

Moving toward real time calculation of ground motions of earthquakes in Southern Ontario 19 Qcorrect output

ARS (Auto Response System) ARS (Automatic Response System)  Sample request (simplest): begin date 2013/09/30 time 15:29:00 duration 240 end  Send the request to: (this processes 240s of data starting at the given time and date) 20

ARS (Auto Response System) ARS (Automatic Response System)  Allows automating data process and posting result when invoked: 1.Reads start time and duration from the request 2.Runs AL2SEED 3.Runs Qcorrect on AL2SEED output 4.Runs M w and Δσ calculation module (part of ARS) 5.Runs IGM-map preparation module 6.Copies all run outputs on Seismotoolbox FTP 7.Sends the FTP link to s of recipient list 21

ARS (Auto Response System) ARS (Automatic Response System)  Allows automating data process and posting result  Reads requests from an account Improvements  Anyone on the team can initiate data processing of seismic signal for specified window (expertise not required)  Allows data processing, posting of results, and sending of notifications remotely  Allows people outside SOSN team, including OPG, to process and post network data  Allows semi-automated data processing of all SOSN stations to be completed in ~5 minutes 22

ARS: ENC (Earthquake Notification Checker) ENC  Checks the account:  Sends request to the account: 23

ARS: ENC (Earthquake Notification Checker) ENC (Earthquake Notification Checker)  Checks GSC earthquake notifications in s  Upon receipt of a notification sends a request to the account checked by ARS Features  Allows for real time automated calculation of ground motions of earthquakes using SOSN data  Initiates data processing of earthquake ground motions with receipt of GSC alert  This tool combined with AL2SEED, Qcorrect, and ARS allows for processing, posting, and ing data links about 5minutes after GSC notifications 24

ARS: Calculator of source parameters M W and Δσ Determination of source parameters M W and Δσ  M W is derived from comparisons of 1Hz PSA measurements with empirical GMPE (Hassani, Yenier model)  Δσ is derived from comparisons of 10Hz PSA measurements with empirical GMPE (known M W ) Features  Allows for real time prediction of event-specific ground motions for a point or a grid of points  Used by IMG-map preparation module 25

ARS: Calculator of source parameters M W and Δσ 26

ARS: Calculator of source parameters M W and Δσ 27

ARS: Calculator of source parameters M W and Δσ 28

ARS: Calculator of source parameters M W and Δσ 29

ARS: Calculator of source parameters M W and Δσ 30

ARS: Interactive Ground Motion Map preparation module (in development) Map data preparation module  Uses Surface module in GMT for making fine grid interpolated map of ground motions and intensity  Uses Grdcontour module in GMT to make contour lines  Uses GMT2JSON to create data objects for Googlemaps Features  Allows for real time preparation of Interactive Ground Motion Maps 31

ARS: Interactive Ground Motion Map preparation module (in development) 32

Without algorithmWith algorithm ARS: Interactive Ground Motion Map preparation module (in development) With algorithm 33

Current and future improvements Improvements to IGM-map by incorporating different ground motion maps and more interactivity Further development and implementation of newer site response grid and GMPE, to modify ground motions by expected site response 34

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