Isoseismal maps drawing by the kriging method

Abstract

Macroseismic intensity, a useful measure of earthquake effects, is still applied in a wide range of seismological applications like seismic hazard assessments, attenuation relationships, etc. Isoseismals represent the spatial distribution of macroseismic intensities, and their shapes depend on source properties, lithosphere structures, tectonic line orientations, site geology, and topography. The applications ask for both the higher number of isoseismal maps, and their standardization and homogenization. The point kriging gridding method for an automatic computer drawing of isoseismal maps was delivered. Smoothing rates and numerical parameters used in the kriging algorithm were tested on macroseismic data of Greek earthquakes representing different tectonic and geomorphological regimes. The optimum kriging default option was defined. Its application for four Greek earthquakes is presented and discussed from the viewpoint of a broad use in recent macroseismology.

Application of the Kriging Method to Draw Isoseismal Maps of the Significant 2002-2003 Costa Rican Earthquakes

“…Some of these options were used by Schenková et al (2007) for drawing isoseismal maps in Greece. These options were:…”

“…This issue was identified by De Rubeis et al (1992), who showed the contrasting isoseismal traces drawn by three different authors using essentially the same intensity data set for the 1683 Sicilian earthquake. The uncertainties in the way seismologists interpret macroseismic data and the problem of drawing objective isoseismal maps has also been discussed by Davidson (1921), Cecić et al (1996), De Rubeis et al (2005, and Schenková et al (2007).…”

“…Palabras clave: Mapas de isosistas, método de Kriging, intensidad Mercalli Modificada, aceleración pico del suelo, efectos de los sismos. (Gasparini et al, 2003;DeRubeis et al, 2005) and Greece (Schenková et al, 2007).…”

Development of damage probability matrices based on Greek earthquake damage data

“…The intensity values have been estimated (Table 2) based on the following three sources: (1) The information provided by the Geodynamic Institute of the National Observatory of Athens (NOA) (Kalogeras and Stavra kakis, 2001); (2) The results of a research program that referred to the estimated macroseismic intensities of the meizoseismal area (Gazetas and Collaborators, 2001); and (3) The existing isoseismal intensity maps which display signifi cant similarity between them (Schenková et al, 2007;Hutchings et al, 2007). The estimated values of the macroseismic intensity are also consistent with the actual records, which describe the ground seismic motion obtained near most NOA stations.…”

Maximum macroseismic intensity map of Greece for the time period 1953–2011

“…(Papazachos et al, 1982(Papazachos et al, , 1997Shebalin 1974), (c) linear interpolation models (Miyazawa & Mori, 2005) and (d) local polynomials and wavelets method (Brillinger, 1996). Additionally, Schenkova et al (2007) proposed a method for the construction of isoseismal maps after an earthquake event with the Kriging technique.…”