Antoni Roca – författare

Table 1. 1 reports the world’s largest earthquakes since 1900 with respect to number of deaths (larger than or equal to 10 000), also showing the region of occurrence and the corresponding magnitudes. Both, from Figure 1. 2 and Table 1. 1 it is interesting to note that this period of time is characterized by an annual average of 15 000 deaths with two main fluctuations (modal values), the largest in the period 1900 to 1940 and another with a larger value in the decade of 1970-80. Figure 1. 2 shows the number of total deaths from the greatest earthquakes that occurred in the XX century. Although the number of victims has a tendency to decrease with time, the economic losses are increasing significantly (see Chapter 18 of this book). Table 1. 1. World earthquakes since 1900 with number of deaths greater than 10 000 Year Region Deaths Magnitude Year Region Deaths Magnitude 1905 India 19000 8. 6 1960 Agadir, Morocco 12000 5. 9 1906 Chile 20000 8. 6 1962 Iran 12000 7. 3 1907 Central Asia 12000 8. 1 1968 Iran 10000 7. 3 1908 Italy 70000 7. 5 1970 Yunnan, China 10000 7. 5 1915 Italy 29980 7. 5 1970 Peru 67000 7. 7 1917 Indonesia 15000 - 1972 Nicaragua 10000 6. 2 1918 China 10000 7. 3 1976 Guatemala 23000 7. 5 1920 China 220000 8. 5 1976 242000 7. 8 Tangshan, China 1923 Japon 142807 7. 9 1978 25000 7.

Table 1. 1 reports the world’s largest earthquakes since 1900 with respect to number of deaths (larger than or equal to 10 000), also showing the region of occurrence and the corresponding magnitudes. Both, from Figure 1. 2 and Table 1. 1 it is interesting to note that this period of time is characterized by an annual average of 15 000 deaths with two main fluctuations (modal values), the largest in the period 1900 to 1940 and another with a larger value in the decade of 1970-80. Figure 1. 2 shows the number of total deaths from the greatest earthquakes that occurred in the XX century. Although the number of victims has a tendency to decrease with time, the economic losses are increasing significantly (see Chapter 18 of this book). Table 1. 1. World earthquakes since 1900 with number of deaths greater than 10 000 Year Region Deaths Magnitude Year Region Deaths Magnitude 1905 India 19000 8. 6 1960 Agadir, Morocco 12000 5. 9 1906 Chile 20000 8. 6 1962 Iran 12000 7. 3 1907 Central Asia 12000 8. 1 1968 Iran 10000 7. 3 1908 Italy 70000 7. 5 1970 Yunnan, China 10000 7. 5 1915 Italy 29980 7. 5 1970 Peru 67000 7. 7 1917 Indonesia 15000 - 1972 Nicaragua 10000 6. 2 1918 China 10000 7. 3 1976 Guatemala 23000 7. 5 1920 China 220000 8. 5 1976 242000 7. 8 Tangshan, China 1923 Japon 142807 7. 9 1978 25000 7.

In many past and recent earthquakes it has been shown that the local conditions and, in particular, the local geology have a great influence on the observed seismic ground motion and, consequently, on the damage distribution in housing, industrial stock, and life-lines. Seismic microzoning is the usual procedure to have these local effects taken into account for engineering design and land-use planning, being a useful tool for earthquake risk mitigation. This volume presents a collection of papers mainly originated from a workshop on Seismic Microzoning, organized during the 23rd General Assembly of the European Geophysical Society (EGS) in Nice, France in April 1998. The workshop dealt with various geophysical tools for analysing the effects of the local soils of subsurface geology on seismic ground motion, namely the methods using experimental data such as microtremors, and the theoretical/numerical 1-D and 2-D modelling methods. Additional contributions discussing techniques for characterising soil properties, microzoning applications to several urban areas, and others were added to the volume to broaden this important topic.

This volume presents a collection of papers mainly originating from a workshop on Seismic Microzoning, organized during the 23rd General Assembly of the European Geophysical Society in Nice, France, in April 1998. Additional contributions discussing techniques for characterizing soil properties, microzoning applications to several urban areas and other such topics have been added to the volume. In many past and recent earthquakes, it has been shown that the local conditions and, in particular, the local geology have a great influence on the observed seismic ground motion and, consequently, on the damage distribution in housing, industrial stock and life-lines. Seismic microzoning is the usual procedure to have these local effects taken into account for engineering design and land-use planning, being a useful tool for earthquake-risk mitigation. The workshop dealt with various geophysical tools for analysing the effects of the local soils of subsurface geology on seismic ground motion, namely the methods using experimental data such as microtremors, and the theoretical / numerical 1-D and 2-D modelling methods.

El 1912, Viena era una urbs aparentment tranquil·la, centre d''un imperi continental que havia sobreviscut a les revoltes del segle XIX. Comptava amb més de dos milions d''habitants i l''Exposició Universal li havia atorgat un prestigi inqüestionable, amanit pels valsos dels Strauss, la dolçor de la sachertorte i l''elegància dels vestits de moiré. Però el luxe i l''ostentació no podien amagar el foc colgat dels conflictes latents i la ciutat era, com molts llocs d''Europa, camp adobat de lluites ideològiques, polítiques i socials. La gran tragèdia que desmembraria aquell imperi encara no havia arribat, però estava a tocar, i aquell any, talment com una premonició de com acaba la supèrbia humana, el Titànic s''enfonsava i semblava posar fi a un segle.En aquest marc convuls, Efraïm Zimmerman, reporter de la crònica social del diari vienès Die Menschlichkeit, es troba, sense buscar-ho, davant d''uns assassinats inexplicables que pertorabaran la seva vida tranquil·la: poc es pot imaginar el que hi ha al darrere i el que està a punt de descobrir. La novel·la Viena, 1912, d''Antoni Roca, va resultar guanyadora del X Premi Memorial Agustí Vehí-Vila de Tiana 2023.