www.spice-rtn.orgMid-Term Review Meeting, February 13-14, Tutzing
Rolf SidlerEarly Stage Researcher
Host Institution: OGS Trieste / ETH ZürichPlace of Origin: Zürich, SwitzerlandAppointment Time: January 2005
Project: Impact of mushy sea-floor properties on wave-field decomposition of ocean bottom cable data.
Task Groups: TG mushy seafloor (Small Scale)
Cooperation: Universität Hamburg
Rolf SidlerEarly Stage Researcher
Host Institution: OGS Trieste / ETH ZürichPlace of Origin: Zürich, SwitzerlandAppointment Time: January 2005
Project: Impact of mushy sea-floor properties on wave-field decomposition of ocean bottom cable data.
Task Groups: TG mushy seafloor (Small Scale)
Cooperation: Universität Hamburg
Seismic wave Propagation and Imaging in
Complex media: a European network
www.spice-rtn.orgMid-Term Review Meeting, February 13-14, Tutzing
Project ScopeImpact of seafloor parameters on wavefield-decomposition
Wavefield-decomposition works fine with synthetic data for an elastic seafloor. For measured data P-wavefields can mostly be satisfactorily decomposed, but S-wavefields often causes troubles.
We establish end-member models for seafloor parameters and produce synthetic OBC data to evaluate
the impact of anisotropy, attenuation, porosity and velocity gradients on the wavefield decomposition on the
ocean bottom.
Muijs (2005)
www.spice-rtn.orgMid-Term Review Meeting, February 13-14, Tutzing
Main Results•Created end-member models for anisotropy, attenuation and velocity gradients for sand, silt and clay sediments.
•Established a test model configuration to evaluate the impact of different sea-floor parameters on the wavefield decomposition.
www.spice-rtn.orgMid-Term Review Meeting, February 13-14, Tutzing
OutlookGenerate synthetic OBC datasets with end-member type
seafloor models and evaluate quantitative impact on wavefield decomposition.
Future work will aim at incorporating porosity in synthetic data and evaluate its impact on wavefield decomposition.