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Local date | 3 January 1117 |
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Magnitude | M 6.5–7.0 |
Epicenter | 45°30′N11°00′E / 45.500°N 11.000°E |
Max. intensity | MMI IX (Violent) |
An earthquake, rated at IX (Violent) on the Mercalli intensity scale, struck northern Italy and Germany on 3 January 1117. [1] [2] The epicentre of the first shock was near Verona, the city which suffered the most damage. The outer wall of the Verona Arena partially collapsed, and the standing portion was damaged in a later earthquake of 1183. After the first shock of 3 January, seismic activity persisted for months, striking on 12 January 4 June, 1 July 1 October, and 30 December.
The earthquake, estimated at magnitude 6.5–7.0, was the largest in northern Italy. Its effects in the Verona region was devastating. The assigned maximum intensity on the MCS scale was IX. Damage in southern Germany and Pisa were initially attributed to this single event in the works of early scholars, however, they are now widely accepted that three distinct earthquakes occurred within the span of several hours. The first earthquake affected the towns of Augsburg, Dissibodenberg, Freising, Petershausen, Saint Blasien and Zwiefalten of Germany, and Melk and Salzburg in Austria. In Augsburg, several cantle collapsed. The collapse of a tower killed an unspecified number of people. The epicenter of this estimated magnitude 6.4 shock was in southern Germany. The earthquake that affected Verona occurred some 12 or 13 hours after the southern Germany event. A possible third shock occurred near Pisa with an epicenter area likely in the Serchio Valley. This shock toppled many towers and infrstructure. The timing of this event coincided with the Verona shock, however, there remains an uncertainty if this was truly a separate event. The maximum seismic intensity assigned was VII-VIII on the MCS scale. This earthquake was preceded by a non-damaging foreshock early in the morning. [3]
The earthquake in Verona in 1117 was the strongest recorded in the history of northern Italy. [1] [4] It was not only felt in Verona, but across northern Italy, from Cividale to Pavia, south to Pisa and north to Switzerland. [5] Outside of Verona, the most damaged areas were Milan, Bergamo, Brescia, Venice, Treviso, Modena, Parma, and Cremona. The main churches of Padua all suffered major damage. News of the earthquake reached Montecassino and Reims. [6] The Milanese chronicler Landolfo Iuniore reported that the church synods needed to be carried out in the open air due to the destruction. In Germany, damage was also extensive. The Michaelskirche in Bamberg, the abbey at Brauweiler, and buildings in Rottenburg am Neckar, Constance, Meersburg, and Fénis were all reported damaged. [7] Many churches, monasteries, and ancient monuments were destroyed or seriously damaged in Verona itself, eliminating much of Verona's early medieval architecture and providing space for a massive Romanesque rebuilding. [8] In the province of Veneto, many churches were severely damaged: in Brescia, Cremona, in the northern part of the Emilia plain and along the central route of the Adige river, and partial collapse of churches in Padua, Piacenza, Parma, and Modena. [9]
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The 1138 Aleppo earthquake was among the deadliest earthquakes in history. Its name was taken from the city of Aleppo, in northern Syria, where the most casualties were sustained. The earthquake also caused damage and chaos to many other places in the area around Aleppo. The quake occurred on 11 October 1138 and was preceded by a smaller quake on the 10th. It is frequently listed as the third deadliest earthquake in history, following on from the Shensi and Tangshan earthquakes in China. However, the figure of 230,000 deaths reported by Ibn Taghribirdi in the fifteenth century is most likely based on a historical conflation of this earthquake with earthquakes in November 1137 on the Jazira plain and the large seismic event of 30 September 1139 in the Transcaucasian city of Ganja.
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The 1348 Friuli earthquake, centered in the South Alpine region of Friuli, was felt across Europe on 25 January. The earthquake hit in the same year that the Great Plague ravaged Italy. According to contemporary sources, it caused considerable damage to structures; churches and houses collapsed, villages were destroyed and foul odors emanated from the earth.
The 1694 Irpinia–Basilicata earthquake occurred on 8 September. It caused widespread damage in the Basilicata and Apulia regions of what was then the Kingdom of Naples, resulting in more than 6,000 casualties. The earthquake occurred at 11:40 UTC and lasted between 30 and 60 seconds.
The 1968 Belice earthquake sequence took place in Sicily between 14 and 15 January. The largest shock measured 5.5 on the moment magnitude scale, with five others of magnitude 5+. The maximum perceived intensity was X (Extreme) on the Mercalli intensity scale. The earthquake sequence, centred between the towns of Gibellina, Salaparuta and Poggioreale, killed at least 231 people, possibly more than 400, with between 632 and about 1,000 injured and left 100,000 homeless. It is known in Italy as Terremoto del Belice.
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The 1570 Ferrara earthquake struck the Italian city of Ferrara on November 16 and 17, 1570. After the initial shocks, a sequence of aftershocks continued for four years, with over 2,000 in the period from November 1570 to February 1571.
The 1920 Garfagnana earthquake occurred on 7 September in Garfagnana and Lunigiana, both agricultural areas in the Italian Tuscany region. The quake hypocenter was located 14 kilometres (8.7 mi) beneath Villa Collemandina. The maximum felt intensity was rated as X (Extreme) on the Mercalli intensity scale, and 6.6 on the Richter scale. It was one of the most destructive seismic events recorded in the Apenninic region in the twentieth century. Due to good news coverage, availability of official documents on the damage and abundance of recordings from surveillance stations throughout Europe, it was regarded as a first-rate case study to improve knowledge of tectonics and macroseismic analysis.
The 1930 Senigallia earthquake struck the city of Senigallia in central Italy on 30 October. It occurred just a few months after the destructive 1930 Irpinia earthquake, which had caused over 1,400 casualties in the southern part of the country.
The 1936 Cansiglio earthquake occurred on 18 October in the region between the provinces of Belluno, Treviso and Pordenone, in northern Italy. It caused 19 deaths and an unknown number of injuries.
The 1873 Alpago earthquake occurred near the Italian city of Belluno on 29 June in the geologically active Alpago Valley of the Veneto region; the zone is rated as two on a four-degree risk scale. The 6.3 magnitude quake was rated as IX–X (Violent–Extreme) on the Mercalli intensity scale. Intensities greater than VII were confined to the provinces of Belluno, Treviso and Pordenone.
The 1639 Amatrice earthquake occurred on 7 October near Amatrice, in the upper valley of the river Tronto, at the time part of the Kingdom of Naples, now Italy.
The 1688 Sannio earthquake occurred in the late afternoon of June 5 in the province of Benevento of southern Italy. The moment magnitude is estimated at 7.0, with a Mercalli intensity of XI. It severely damaged numerous towns in a vast area, completely destroying Cerreto Sannita and Guardia Sanframondi. The exact number of victims is unknown, although it is estimated to total approximately 10,000. It is among the most destructive earthquakes in the history of Italy.
The 1170 Syria earthquake was one of the largest earthquakes to hit Syria. It occurred early in the morning of 29 June 1170. It formed part of a sequence of large earthquakes that propagated southwards along the Dead Sea Transform, starting with the 1138 Aleppo earthquake, continuing with the 1157 Hama, 1170 and 1202 Syria events. The estimated magnitude is 7.7 on the moment magnitude scale, with the maximum intensity of X (Extreme) on the Mercalli intensity scale.
On 27 November 1461, a powerful earthquake and series of aftershocks struck Italy's Abruzzo region along the Aterno River. The tremors caused widespread damage to Abruzzo's capital, L'Aquila, and the surrounding villages. At least 80 people are recorded to have died and numerous people were injured by the earthquakes. The quakes also caused major, permanent damage to religious sites and changed politics for L'Aquila and the Abruzzo region.
The 1883 Casamicciola earthquake, also known as the Ischia earthquake occurred on 28 July at 20:25 local time on the island of Ischia in the Gulf of Naples in Italy. Although the earthquake had an estimated moment magnitude of 4.2–5.5, considered moderate in size, it caused intense ground shaking that was assigned XI (Extreme) on the Modified Mercalli intensity scale. Between 2,313 and 3,100 people lost their lives. The city also suffered great property losses, with 80 percent of all homes destroyed. This earthquake was exceptionally destructive for its magnitude mainly due to its shallow focal depth.
On December 5, 1456, the largest earthquake to occur on the Italian Peninsula struck the Kingdom of Naples. The earthquake had an estimated moment magnitude of Mw 7.19–7.4, and was centred near the town of Pontelandolfo in the present-day Province of Benevento, southern Italy. Earning a level of XI (Extreme) on the Modified Mercalli intensity scale, the earthquake caused widespread destruction in central and southern Italy. Estimates of the death toll range greatly with as many as 70,000 deaths reported. It was followed by two strong Mw 7.0 and 6.0 earthquakes to the north on December 30. The earthquake sequence is considered the largest in Italian history, and one of the most studied.
A series of mainshocks struck Calabria on March 27–28 and June 9, 1638. The first three earthquakes had moment magnitudes estimated to be Mw 6.6–7.1. On June 9, another mainshock estimated at Mw 6.7 struck the same region, causing further damage and casualties. The four earthquakes resulted in as many as 30,000 fatalities.
An earthquake originating in the Central Apennines was felt in Rome and Spoleto on 29 April 801. It is reported in two independent contemporary sources, Einhard's Royal Frankish Annals and the Liber Pontificalis. The information provided by the written sources has been augmented by archaeology.