1 / 8

Seismic Hazard in the Eastern & Southern Alps: State of the Art and New Challenges

Seismic Hazard in the Eastern & Southern Alps: State of the Art and New Challenges. Local Seismicity and the “ Friaul ” box. S. Parolai / M. Pilz (M. W eber) GFZ-German Research Centre for Geosciences Center for Early Warning.

debusk
Download Presentation

Seismic Hazard in the Eastern & Southern Alps: State of the Art and New Challenges

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Seismic Hazard in the Eastern & Southern Alps: State of the Art and New Challenges Local Seismicity and the “Friaul” box S. Parolai / M. Pilz (M. Weber) GFZ-German Research Centre for Geosciences Center for Early Warning Stefano Parolai – GFZ German Research Centre for Geosciences

  2. Friaul 1976 Emilia 2012

  3. 21 short period stations 15 broad band stations Stefano Parolai – GFZ German Research Centre for Geosciences

  4. Instrumental and Historical catalog Friaul 1976 Emilia 2012 Stefano Parolai – GFZ German Research Centre for Geosciences

  5. Hazard Maps and Seismic Normative Stefano Parolai – GFZ German Research Centre for Geosciences

  6. Proposed activities The unique data set collected by the dense array installed during the project will allow an un-precedent evaluation of site effects with high spatial resolution by: • Spectral analysis of earthquake and seismic noise recordings • Advance polarization analysis based on time-frequency decomposition of seismograms Furthermore the potential for extreme non linear site effects will be assessed using seismic noise array data analysis (1D-3D) These data are of major importance also for better understanding the relations between surface process and seismic records Stefano Parolai – GFZ German Research Centre for Geosciences

  7. Thank You! D swath Friaul 1976 • Moving array • 30-40 stations • 3-4 months Emilia 2012 Stefano Parolai – GFZ German Research Centre for Geosciences

  8. Seismic Hazard in the Eastern & Southern Alps: State of the Art and New Challenges Stefano Parolai GFZ-German Research Centre for Geosciences Center for Early Warning Slide 1: the probabilistic seismic hazard (PSHA) has been recently evaluated for Italy using the most up-to-date information about seismic zonation, historical and instrumental catalog, ground motion prediction equation, etc Slide 2: site effects play a fundamental role in determining the spatial distribution of ground shaking, but only for specific (local) studies they can be treated in details within the PSHA context. Slide 3: In the Po plain, significant site effects are expected. This slide shows examples of non-linear site effects following the Emilia earthquake. Slide 4: in the Po plain, site effects related to the geometry of the basin (2D/3D site effects) are also expected. Local generated surface waves can led to significant increase of long-period ground shaking. Slide 5: proposed activities to evaluate the site effects in the Po plain and their effect on the ground shaking. Stefano Parolai – GFZ German Research Centre for Geosciences

More Related