Joint microseismic event location with uncertain velocity
Name
Poliannikov_etal_Joint_microseismic.pdf
Size
83.48 KB
Format
Adobe PDF
Checksum (MD5)
a897af3e9f64858582838380a4e42fdc
Author(s)
Poliannikov, Oleg V.
Prange, Michael
Malcolm, Alison E.
Djikpesse, Hugues
Date Issued
2013
Publisher
Massachusetts Institute of Technology. Earth Resources Laboratory
Series/Report no.
Earth Resources Laboratory Industry Consortia Annual Report;2013-16
Abstract
We study the problem of the joint location of seismic events using an array of receivers. We show that locating multiple seismic events simultaneously is advantageous compared to the more traditional approaches of locating each event independently. Joint location, by design, includes estimating an uncertainty distribution on the absolute position of the events. From this can be deduced the distribution on the relative position of one event with respect to others. Many quantities of interest, such as fault sizes, fracture spacing or orientation, can be directly estimated from the joint distribution of seismic events. Event relocation methods usually update only the target event, while keeping the reference events fixed. Our joint approach can be used to update the locations of all events simultaneously. The joint approach can also be used in a Bayesian sense as prior information in locating a new event.
Subjects
Inversion
Microseismic
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