FW: NSHA23 Release and Webinar Invitation [SEC=OFFICIAL]

[Trevor Allen]

Hi all – apologies to those who have already receive this.  For those that did not, please see details on the NSHA23 release and webinar below.

 

Cheers,

Trev

 

From: Trevor Allen
Sent: Monday, March 18, 2024 3:54 PM
Cc: Community Safety Group DL <CommunityS...@ga.gov.au>
Subject: NSHA23 Release and Webinar Invitation [SEC=OFFICIAL]

 

Dear colleagues,

 

Geoscience Australia is pleased to release the 2023 National Seismic Hazard Assessment (NSHA23) of Australia.  This release is the culmination of a multi-year update of the national hazard model and has involved several stakeholder workshops, expert elicitation, and contributions from the Australian seismological and earthquake engineering community.  Highlights of the model update include:

 

• Revision of the national fault-source model
• Revision of the Australian earthquake catalogue (including recalculating magnitudes for all post-2010 earthquakes from original waveforms)
• Community agreement on homogenised catalogue
• Updated source and ground-motion model logic trees from expert elicitation
• Estimation of seismic hazard on multiple site classes
• Participatory review by an international Peer Review Panel

 

Three Geoscience Australia Records and associated data files relating to the NSHA23 are now available for download.  These include:

 

• The 2023 National Seismic Hazard Assessment for Australia. Model Overview
• Notes on fault-source parametrisation for the Fault Source Model in the NSHA23
• The 2023 National Seismic Hazard Assessment for Australia. Model Input and Output Data

 

A fourth GA Record specifically in the earthquake NSHA23 catalogue is forthcoming, although most of the main highlights are described in the Model Overview Record.

 

The NSHA23 team invite you to attend a webinar on Thursday 4 April at 11:00 am (AEDT) that will provide an overview of the model and outline some of the key changes.  Please register for this Webinar at this link.  A recording of the Webinar will be made available to those that are unable to attend.

 

Finally, we wish to thank all of those that have contributed to the NSHA23 and look forward to meeting with you next month.  Please feel free to forward this invitation to those you feel may be interested.

 

Kind regards,

Trevor and the NSHA23 team

 

Trevor Allen
Earthquake Hazard Activity Lead

Place and Communities Division  |  GEOSCIENCE AUSTRALIA

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