## The 8 April 1893 Earthquake Data
### Data Collected by Serbian Authorities and Researchers
[PERSON], the Administrator of the Geological Institute and professor of the Great School, [PERSON], also a professor of the Great School, and [PERSON], head of the Ministry of Internal Affairs, began their visit to the most affected areas in the Morava and Resava basins on 10 April. The findings of their investigation were presented at the XX Geological Assembly on April 22 under the title \"Preliminary report on the earthquake\", and the text of the lecture was published in the Serbian Newspaper [10] and, later, in the Registry of the Serbian Royal Academy, Book XXXII, pp. 81-86 [11]. [PERSON], Ph.D., the state geologist, made a thorough inspection of the entire region where the largest number of quakes had occurred--the area close to the Resava River, the areas around the cities of Jagodina and Cuprija, as well as the area near the Morava river close to the city of Pozarevac. The task of the state geologist, Mr. [PERSON], was to gather information on the direction of the main earthquake and its intensity according to the consequences. The findings of his fieldwork were presented on 23 May 1893, at the XXI meeting of the Geological Society. The text of that presentation under the title \"Data on the direction and strength of the main earthquake in the Pleistocene region\" was published in the Registry of the Serbian Royal Academy, Book XXXII, pp. 86-94 [11]. In addition to these two reports with field data on the main earthquake and its consequences in the valleys of Morava and Resava rivers (in detail at the sites visited and in summary for the entire area), the Geological Institute received, from all across Serbia, reports from telegraph stations, railway stations, private individuals, subordinate organizations reporting to the Ministry of Internal Affairs, reports to the Ministry of Economy, reports from teachers and priests, and newspaper reports. Finally, the data from the major earthquake and smaller earthquakes were reviewed, processed, and then chronologically systematized by the date and time of occurrence and displayed in alphabetical order of the places from which they were recorded in the Registry of the Serbian Royal Academy, Book XXXII, pp. 6-35, 81-94 [11]. The data that the Geological Institute obtained from what was then known as Old Serbia (Kosovo and Metohija), Macedonia, Bosnia, Croatia, and Slavonia, Hungary, Bulgaria, Austria were all processed in the same way and published in the Registry of the Serbian Royal Academy, Book XXXII, pp. 95-104 [11]. Table 2 shows the distribution of data (reports, direct or indirect) on the main earthquake by country/region. Finally, for the additional two locations (two monasteries in Serbia), we found reports on the effects of the 1893 event on a webpage on the monasteries and churches belonging to the Serbian Orthodox Church ([[https://www.manastiri-crkve.com](https://www.manastiri-crkve.com)]([https://www.manastiri-crkve.com](https://www.manastiri-crkve.com)), accessed on 3 September 2023). \begin{table}
\begin{tabular}{c c} \hline
**Country/Region** & **Number of Locations** \\ \hline then-Serbia (now central Serbia) & 247 \\ Ottoman Empire’s Old Serbia (now Kosovo and Metohija) & 1 \\ Ottoman Empire’s Macedonia (now North Macedonia) & 2 \\ then-Hungary (now northern Serbia, west and central Romania, \\ southern Slovakia, northeast of Croatia, and Hungary) & 11 \\ then-Croatia and Slavonia (now Croatia without its coastal parts) & 36 \\ then-Bosnia (now Bosnia and Herzegovina) & 15 \\ Bulgaria & 5 \\ Austria & 1 \\ Total & 318 \\ \hline \end{tabular}
\end{table} 
Table 2: Number of data by country/region given in the Registry of the Serbian Royal Academy, Book XXXII, pp. 6–35, 81–94 [11].