Investigation of pre-1700 Earthquakes Between the Adda and the Middle Adige River Basins (Southern Alps) - Historical Seismology: Interdisciplinary Studies of Past and Recent Earthquakes - page 110

Travagliato; the second one at 11 a.m., Io 7 MCS, Mm 4.7 and epicentral location
at Castenedolo. The study by ENEL (1985) using coeval sources such as Arnolfo da
Milano (11th cent.) and Malvezzi (14th cent.), reports two earthquakes with date 17
March 1065 and I 7-8 MCS at Brescia. Guidoboni and Comastri (2005), using the
same sources report only one earthquake with date 27 March 1065, in the morning,
and intensity distribution with 8 MCS at Brescia and F (felt) at Milano.
3.3.3 The Area of Verona
As from the previous chapter, the today knowledge of this area no longer shows
many damaging earthquakes as it appeared from Postpischl (1985a). Here follow
the few surviving ones.
3.3.3.1 1183
This earthquake was reported by Postpischl (1985a) with the date January 1183, Io
8-9 MCS and epicentral location at Verona. The study by ENEL (1985) considered
the available information as debatable and hypothesised a rather low level of shak-
ing, assessing Io 4-5 MCS. Alexandre (1990) considered this event as false. Boschi
et al. (1995), using Parisius de Cereta (1117-1278) date the earthquake to 1183
and attribute to it the collapse occurred in January 1184. They assign I 4-5 MCS
to Verona. This picture was the reason for not inserting the event in the catalogue
CPTI04 (CPTI Working Group, 2004). Stucchi et al. (1993) investigated a chrono-
logical issue already remarked by Baratta (1901) and considered reliable his oldest
source (Parisius de Cereta, 1117-1278) which dates the earthquake 1183 January
but places it in a conflicting historical frame. The source relates that in July 1183
there was a meeting in Verona between Pope Lucius III and Emperor Frederick I:
“MCLXXXIII. Dominus Lucius papa, et dominus Fredericus Imperator ultimo die iulii
fuerunt Veronam. Et hilariter recepti, et honorifice pertractati” (Parisius de Cereta, 1117-
1278)
[1183. Pope Lucius and Emperor Frederick were in Verona the last day of July. And they
were received with great happiness and treated with great honours.]
Information about the earthquake is given after this event:
“Millesimo supradicto intrante mense ianaurio. Maxima pars alae Arenae cecidit terremotu
magno per prius facto, videlicet ala exterior” .
[In the mentioned year, at the beginning of the month of January the largest part of one side
of the Arena, in the outer wall, collapsed because of an earthquake that happened some time
before.]
The contradictory chronology could be explained by the use of different calendars;
in Verona the Nativity style was in use and the January “coming” month could be
related to 1184. As a matter of fact Lucius III and Frederick I met in 1184, not
in 1183; therefore, the information about damage at the Verona Arena should be
dated January 1185. In this case, following Stucchi et al. (1993), it has to be taken
into account that Alexandre (1990) reported a (true) “ terraemotus modicus ” in Italy