www.spice-rtn.orgMid-Term Review Meeting, February 13-14, Tutzing

Seismic wave Propagation and Imaging in Complex media: a European network

Shane MurphyEarly Stage Researcher

Host Institution: University of NaplesPlace of Origin: Dublin, IrelandAppointment Time:January 2005

Project: Source and propagation effects in micro-earthquake data: applications to Campi Flegrei (Italy)

Task Groups: TG Local Scale, TG Small Scale

Cooperation: University of Nice, University of Strasbourg, INGV Naples, INGV Rome

www.spice-rtn.orgMid-Term Review Meeting, February 13-14, Tutzing

Project Scope

(1) Dynamic Rupture Modelling

(2) Focal Mechanism & Stress Tensor Inversion

(3) Earthquake Reflector Profiling

www.spice-rtn.orgMid-Term Review Meeting, February 13-14, Tutzing

(2) Focal Mechanism & Stress Tensor Inversion

• Type of Faulting

•Grid Search

•Probabilistic Approach

• Stress Field Inversion

•Grid Search

www.spice-rtn.orgMid-Term Review Meeting, February 13-14, Tutzing

(2) Results –Test Case: Campi Flegrei

2

3

1

Most Probable Focal Mechanism

1st April1st April 19841984

Direction of Principal Stresses

www.spice-rtn.orgMid-Term Review Meeting, February 13-14, Tutzing

(3) Reflector Profiling

Imaging Subsurface layers in the Campi Flegrei area – Amplitude evaluation in order to determine gas /liquid contacts

Exploration Approach

Seismological A

pproach

www.spice-rtn.orgMid-Term Review Meeting, February 13-14, Tutzing

Future Work• Perform an assessment of the type of faulting and the general

stress field in the Campi Flegrei area

• Construct a reflector profiling code for earthquake datasets

Can this boundary be detected?Tomographic Section