= SCEC workshop: Earthquake Source Inversion – Planning of a Validation Exercise = == Sunday, Sept. 7, 2008; 8:00 – 12:00 == '''''Organized by Martin Mai, Morgan Page, and Danijel Schorlemmer''''' 8:00 – 8:10 Martin Mai: Introduction: Scope of the workshop & review of an initial blind-test ( [[attachment:SIV_Intro2008_Mai.pdf |SIV_Intro2008_Mai.pdf |&do=get]]) 8:10 – 8:25 Morgan Page: Strategies for uncertainty assessment in source inversions ([[attachment:PageSCEC2008.pdf|PageSCEC2008.pdf|&do=get]]) 8:25 – 8:40 Yuji Yagi: Importance of covariance components for finite-source inversions 8:40 – 8:55 Kazuki Koketsu: Current status of source inversion methods in Japan 8:55 – 9:10 Raul Madariaga: Inverting for dynamic source parameters 9:10 – 9:25 Ruth Harris: Experience from the Dynamic Code Validation Project 9:25 – 9:40 Danijel Schorlemmer: An existing testing center: CSEP ( [[attachment:Schorlemmer2008.pdf | Schorlemmer2008.pdf|&do=get]] ) 9:40 – 10:00 ''Coffee break'' '''10:00 – 12:00 OPEN DISCUSSION – PLANNING THE SOURCE-INVERSION VALIDATION EXERCISE''' 10:00 – 10:40 DISCUSSION I : Science issues / General questions * source inversion: an under-determined problem * how to best quantify waveform fits ? * how to optimally weight different data sets used in the inversion ? * effects of source-receiver constellation ? * effects of different stabilizing/smoothing constraints? 10:40 – 11:20 DISCUSSION 2: General set-up of the exercise * Greens functions: pre-computed or velocity-density models specified ? * Greens functions: Simple media or realistic structures ? * source geometry: how much information should be provided ? * what "data" (synthetics) are desired? Statics, strong-motion, teleseismics? * "clean" synthetics or noise-contaminated ? * how to compare inversion results; what are relevant statistical measures ? * a fully prospective inversion ? 11:20 – 12:00 DISCUSSION 3: Logistics, Resource, Management * overall strategy and rough time-frame * formats for submission of models/synthetics ? * Authorization of data streams ? * needed computational/infrastructure resources ? * proposal for future funding for these efforts ?