We thank the #AHEAD initiative as the database was opened using the MIDOP software, designed by Mario Locati #INGV. This paper and work results from the PhD research of Ben Neefs and was funded entirely by the @orb-ksb.bsky.social !

The BTM database allows the Belgian population to find answers to questions like:
o How many earthquakes were felt in your municipality in the twentieth century?
o Which earthquake had the largest impact on your municipality?
o What was the largest magnitude of an event in your region?

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We invite you to explore the data following the link below (data shared under a CC BY 4.0 license). You can browse through all the earthquakes, or find the overview per municipality: doi.org/10.24414/2b5...

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The open publication of the BTM database:
• facilitates the use of Belgian macroseismic data for a variety of seismological purposes
• summarizes the overall seismic impact on Belgium for the duration of a century

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…and for all communal levels.

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With this database, we summarize the seismic impact on Belgium for over a century and computed the maximum intensity for all subcommune levels in Belgium…

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The 80 earthquakes in the BTM origin in Belgium, as well as in the neighbouring countries of Germany, France, and The Netherlands.

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The BTM database currently consists of 23,950 intensity data points (IDPs) on the European Macroseismic Scale for 80 felt earthquakes in and around Belgium, ranging from 2.4 to 5.8 on the local magnitude (ML) scale. The figure gives an overview of the intensity distribution through time

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The questionnaires evolved significantly over the 20th century: from small improvised surveys to mass distribution of collective questionnaires sent to local authorities.

We re-evaluated these sources to create the 𝗕𝗲𝗹𝗴𝗶𝗮𝗻 𝗧𝗿𝗮𝗱𝗶𝘁𝗶𝗼𝗻𝗮𝗹 𝗠𝗮𝗰𝗿𝗼𝘀𝗲𝗶𝘀𝗺𝗶𝗰 (𝗕𝗧𝗠) 𝗱𝗮𝘁𝗮𝗯𝗮𝘀𝗲!

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In this study we review a century of testimonies how the Belgian population has felt earthquakes in and around Belgium! For every event, communal questionnaires were sent out to the majors of Belgian municipalities. Their replies allowed estimating the intensity of shaking for each commune.
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@seismosue.bsky.social : Joining the momentum!