The 1992 Roermond earthquake occurred on 13 April, around 3:20 AM (1:20 UTC) with a

moment magnitude The moment magnitude scale (MMS; denoted explicitly with or Mw, and generally implied with use of a single M for magnitude) is a measure of an earthquake's magnitude ("size" or strength) based on its seismic moment. It was defined in a 1979 pape ...

of 5.3 and a maximum

Mercalli intensity The Modified Mercalli intensity scale (MM, MMI, or MCS), developed from Giuseppe Mercalli's Mercalli intensity scale of 1902, is a seismic intensity scale used for measuring the intensity of shaking produced by an earthquake. It measures the eff ...

of VIII (''Severe''). Striking on the Peel Boundary Fault, a normal fault near

Roermond Roermond (; li, Remunj or ) is a city, municipality, and diocese in the Limburg province of the Netherlands. Roermond is a historically important town on the lower Roer on the east bank of the river Meuse. It received town rights in 1231. Roer ...

, it was the strongest recorded earthquake in the Netherlands and in

Northwestern Europe Northwestern Europe, or Northwest Europe, is a loosely defined subregion of Europe, overlapping Northern and Western Europe. The region can be defined both geographically and ethnographically. Geographic definitions Geographically, Northw ...

, and caused substantial damage to older buildings in the Netherlands and adjacent countries of Belgium and Germany. A series of aftershocks followed.

Tectonic setting

The city of Roermond lies above the Roer Graben, which forms the southeastern part of the Lower Rhine Graben (or Lower Rhine Embayment). These structures form part of the

European Cenozoic Rift System The European Cenozoic Rift System (ECRIS) is a long system of rifts formed in the foreland of the Alps as the lithosphere responded to the effects of the Alpine and Pyrenean orogenies. The system began to form during the Late Eocene and parts ( ...

, which formed within the foreland of the Alpine orogeny. The Roer

graben In geology, a graben () is a depressed block of the crust of a planet or moon, bordered by parallel normal faults. Etymology ''Graben'' is a loan word from German, meaning 'ditch' or 'trench'. The word was first used in the geologic contex ...

formed during the

Paleogene The Paleogene ( ; British English, also spelled Palaeogene or Palæogene; informally Lower Tertiary or Early Tertiary) is a geologic period, geologic period and system that spans 43 million years from the end of the Cretaceous Period million yea ...

and is currently active as shown by the thickening of

Quaternary The Quaternary ( ) is the current and most recent of the three periods of the Cenozoic Era in the geologic time scale of the International Commission on Stratigraphy (ICS). It follows the Neogene Period and spans from 2.58 million years ...

sedimentary rocks into the basin. The graben is bounded by NW-SE trending

normal fault In geology, a fault is a planar fracture or discontinuity in a volume of rock across which there has been significant displacement as a result of rock-mass movements. Large faults within Earth's crust result from the action of plate tectonic ...

systems, with the largest fault being the southwest- dipping Peel Boundary Fault, which displaces the base of the Quaternary sequence by about 175 m. All the major faults show evidence of

neotectonics Neotectonics, a subdiscipline of tectonics, is the study of the motions and deformations of Earth's crust (geological and geomorphological processes) that are current or recent in geologic time. The term may also refer to the motions/deformations i ...

Location

The earthquake's

focal mechanism The focal mechanism of an earthquake describes the deformation in the source region that generates the seismic waves. In the case of a fault-related event it refers to the orientation of the fault plane that slipped and the slip vector and is ...

showed almost pure normal faulting on a plane dipping southwest at 68°, identified as the Peel Boundary Fault. The

epicentre The epicenter, epicentre () or epicentrum in seismology is the point on the Earth's surface directly above a hypocenter or focus, the point where an earthquake or an underground explosion originates. Surface damage Before the instrumental pe ...

of the earthquake lay kilometers away from the south of

Intensity

The earthquake was recorded as 5.8 on the

Richter magnitude scale The Richter scale —also called the Richter magnitude scale, Richter's magnitude scale, and the Gutenberg–Richter scale—is a measure of the strength of earthquakes, developed by Charles Francis Richter and presented in his landmark 1935 ...

(5.3 on the

moment magnitude scale The moment magnitude scale (MMS; denoted explicitly with or Mw, and generally implied with use of a single M for magnitude) is a measure of an earthquake's magnitude ("size" or strength) based on its seismic moment. It was defined in a 1979 pape ...

) and a maximum intensity of VIII (''Severe'') on the

Mercalli intensity scale The Modified Mercalli intensity scale (MM, MMI, or MCS), developed from Giuseppe Mercalli's Mercalli intensity scale of 1902, is a seismic intensity scale used for measuring the intensity of shaking produced by an earthquake. It measures the eff ...

. An intensity of VIII means considerable damage to poorly built structures and heavy furniture is overturned. The earthquake was not evenly spread as some areas were hit harder than others. This earthquake could be felt as far away as the

Czech Republic The Czech Republic, or simply Czechia, is a landlocked country in Central Europe. Historically known as Bohemia, it is bordered by Austria to the south, Germany to the west, Poland to the northeast, and Slovakia to the southeast. The ...

Switzerland ). Swiss law does not designate a ''capital'' as such, but the federal parliament and government are installed in Bern, while other federal institutions, such as the federal courts, are in other cities (Bellinzona, Lausanne, Luzern, Neuchâtel ...

France France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of Overseas France, overseas regions and territories in the Americas and the Atlantic Ocean, Atlantic, Pacific Ocean, Pac ...

and

England England is a country that is part of the United Kingdom. It shares land borders with Wales to its west and Scotland to its north. The Irish Sea lies northwest and the Celtic Sea to the southwest. It is separated from continental Europe b ...

Damage and casualties

In the regions between Roermond,

Maaseik Maaseik (; li, Mezeik) is a city and municipality in the Belgian province of Limburg. Both in size (close to 77 km2) and in population (approx. 25,000 inhabitants, of whom some 3,000 non-Belgian), it is the 8th largest municipality in Limburg ...

(Belgium), and

Heinsberg Heinsberg (; li, Hinsberg ) is a town in North Rhine-Westphalia, Germany. It is the seat of the Heinsberg (district), district Heinsberg. It is situated near the border with the Netherlands, on the river Wurm, approx. 20 km north-east of Si ...

(Germany), buildings, especially old buildings, and cars were destroyed. Two churches in Roermond, the

Munsterkerk The Munsterkerk (''Munster'') is a 13th-century church dedicated to Our Lady in the Dutch town of Roermond. Its remarkable front towers are 55 meter in height. The Munsterkerk is one of the most important examples of Late Romanesque architectur ...

and Minderbroederskerk, were heavily damaged. The economic cost of the earthquake was estimated to be around 275 million

guilder Guilder is the English translation of the Dutch and German ''gulden'', originally shortened from Middle High German ''guldin pfenninc'' "gold penny". This was the term that became current in the southern and western parts of the Holy Roman Empir ...

s (around 125 million

euro The euro ( symbol: €; code: EUR) is the official currency of 19 out of the member states of the European Union (EU). This group of states is known as the eurozone or, officially, the euro area, and includes about 340 million citizens . ...

s), of which 170 million guilders (around 77 million euros) of damage in the Netherlands. A 79-year old woman died of a heart attack in

Bonn The federal city of Bonn ( lat, Bonna) is a city on the banks of the Rhine in the German state of North Rhine-Westphalia, with a population of over 300,000. About south-southeast of Cologne, Bonn is in the southernmost part of the Rhine-Ruhr r ...

Aftershocks

The earthquake was followed by more than 200

aftershock In seismology, an aftershock is a smaller earthquake that follows a larger earthquake, in the same area of the main shock, caused as the displaced crust adjusts to the effects of the main shock. Large earthquakes can have hundreds to thousand ...

References

External links

* {{DEFAULTSORT:1992 Roermond Earthquake

Roermond Earthquake Roermond Earthquake Roermond Earthquake April 1992 events in Europe Earthquakes in Belgium Earthquakes in Germany Earthquakes in the Netherlands History of Limburg (Netherlands) Roermond 1992 disasters in Europe 1992 disasters in Belgium 1992 disasters in Germany 1992 disasters in the Netherlands