ZULZEKE-NUKERKE
Earthquake11 June 1938Special page
- Magnitude
- 5.6ML
- Depth
- 19.0km ± 3.4
- Max. int.
- 7
- Belgian time
- 11:57:361938-06-11
- UTC
- 10:57:361938-06-11
86 historical texts on this earthquake
Main parameters
| Date and time | 1938-06-11 10:57:36 UTC 1938-06-11 11:57:36 Belgian time |
|---|---|
| Magnitude | ML 5.6 |
| Epicentral coordinates | 50.733° N, 3.617° E Uncertainty ± 3.4 km |
| Maximum intensity | 7 |
| Depth of hypocenter | 19.0 ± 3.4 km |
| Event ID | ROB 509 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2021-01-05 09:48:59 Belgian time
Location map
Special information page
All special pagesThe Observatory has written an account of this earthquake (effects, aftershocks, seismotectonic setting), available in French and Dutch.
Macroseismic intensities
Intensities assessed for each municipality by the seismologists of the Royal Observatory, from the official questionnaires sent to the municipalities, letters received, the press and published studies. They make up the Belgian Traditional Macroseismic database (BTM).
- Intensity data points
- 1230
- Maximum intensity
- VII
- Farthest municipality
- 196km · ARLON
- Source quality
- B
- I
- II
- III
- IV
- V
- VI
- VII+
- Epicentre
Points by intensity
| Intensity | Points | |
|---|---|---|
| III | 39 | |
| IV | 198 | |
| V | 463 | |
| VI | 475 | |
| VII | 55 | |
| Total | 1230 |
Municipalities assessed with a range (Imin < Imax): 45. Switching between Imin and Imax shows the spread of the assessment.
List of the points (1230)
Sources of the intensities
| Source | Points |
|---|---|
| Official ROB questionnaire, version 2 | 965 |
| Letters received by the ROB | 265 |
Belgian Traditional Macroseismic database: Neefs B, Van Noten K, Vanneste K, Camelbeeck T (2025). The Belgian traditional macroseismic (BTM) database of the twentieth century. Journal of Seismology 29, 1005–1036. doi:10.1007/s10950-024-10266-9
Data set: Neefs B, Van Noten K, Vanneste K, Camelbeeck T (2024). The Belgian Traditional Macroseismic (BTM) Database of the 20th Century [data set]. Royal Observatory of Belgium. doi:10.24414/2b5w-j029
Notes and method
For each municipality, an assessment on the European Macroseismic Scale EMS-98: minimum and maximum intensity (Imin, Imax), equal or forming a range (III–IV) that reflects the spread of the testimonies in the municipality, “F” when the earthquake was felt but no degree could be given.
Only Belgian municipalities are in the BTM database. Points of the ROB database outside this area (abroad), not shown: 414.
Seismic activity in the area
Known earthquakes around the epicentre, from the catalogue of the Royal Observatory of Belgium.
Within 10 km of the epicentre
10 other earthquakes in the catalogue since 1938. 10 of them occurred after this one. This is the largest known earthquake in the area.
Latest earthquakes before this one
No earthquake known before this one.
Largest known earthquakes
| Date | Place | Magnitude | Intensity | Distance km |
|---|---|---|---|---|
| 1938-06-11 | This earthquake | ML 5.6 | 7 | – |
| 1938-06-12 | ZULZICH-NUKERKE | ML 4.5 | 5 | 6.1 |
| 1938-06-11 | ZULZICH-NUKERKE | ML 4.0 | 4 | 6.1 |
| 1938-06-13 | ZULZICH-NUKERKE | ML 3.6 | 4 | 6.1 |
| 2010-11-16 | HACQUEGNIES (BE)induced | ML 1.7 | – | 9.4 |
Municipality of Ronse
No other earthquake known in the catalogue.
Notes and method
Tectonic and induced earthquakes from the Observatory’s catalogue, suspected ones included; quarry blasts, explosions and other events are not counted. Epicentral distances on the WGS84 ellipsoid.
Municipality: 2025 municipal boundaries (Statbel), applied to every earthquake, including those before the merger of municipalities. For an epicentre outside Belgium, only the circular area is given. Each earthquake’s name is the catalogue’s: it may refer to a place near the epicentre.
Magnitude: the one given on each earthquake’s page (ML preferably, otherwise MW or MS); magnitudes of different types are compared as they are.
The epicentres of historical earthquakes are only known to within a few kilometres, sometimes more: whether they fall in the area is indicative. Small earthquakes have only been recorded as the station network grew: the area’s older earthquakes are mostly the largest ones, and recent activity looks more frequent.