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Swiss Shakemap at Fifteen: Distinctive Local Features and International Outreach

The Swiss Seismological Service (SED; www.seismo.ethz.ch) at ETH Zürich is the agency in charge of monitoring the seismicity in and around Switzerland and of informing the public, the authorities and the media about earthquake locations, magnitudes and possible impacts. Among the SED earthquake products is ShakeMap (usgs.github.io/shakemap), in use in Switzerland for about 15 years. The Swiss ShakeMap framework has been regularly updated since the original implementation to exploit and integrate the latest advances in seismic monitoring, seismic hazard and engineering seismology at the SED, as well as core software improvements. In this contribution we present the latest developments in, and the outlook for, SED ShakeMaps (SED_SM). SED_SM are constrained by the real-time records of 450+ permanent and temporary stations acquired by the SED (the permanent national CH network, doi.org/10.12686/sed/networks/ch, presently comprises ~220 operational stations), driven by earthquakes identified and characterized using SeisComP (www.seiscomp.de). Event and waveform parameterization is performed using the software module scwfparam, part of the free open-source SeisComP distribution. SED_SM use Swiss-specific ground-motion models included in OpenQuake (platform.openquake.org) and high-resolution site amplification models that allow reliable predictions of ground shaking across the Swiss alpine and foreland regions. Automatically collected and processed felt intensities are overlain on SED_SM for comparison though currently these are not automatically integrated in the calculations. For internal SED use, SED_SM provides input to estimate the likelihood of earthquake-triggered mass-movements for significant events (M4.5+). There are plans to include rapid finite-fault information in SED_SM, provided by the FinDer algorithm already operating in real time at SED. The SED is a core founder and contributor of the European ShakeMap initiative (shakemapeu.ingv.it) that promotes international collaboration and harmonization of ShakeMap procedures in the greater European region.

Session: Network Seismology: Recent Developments, Challenges and Lessons Learned [Poster]

Type: Poster

Room: Evergreen Ballroom

Date: 4/22/2022

Presentation Time: 08:00 AM Pacific

Presenting Author: Carlo Cauzzi

Student Presenter: No

Additional Authors