Mt. Etna feeding system and sliding flank : a new 3D image from earthquakes distribution in a customisable GIS

High-resolution seismic imaging enables the reconstruction of ascending paths of magma and fluids, shallow molten accumulation and flank collapse areas, all crucial information for developing an efficient eruption forecasting strategy. Here, the Marching Cubes algorithm (MC - generally applied to medical visualization and three-dimensional (3D) modeling) is applied to 16 years of earthquake location data at Mt. Etna (Italy). The algorithm defines three-dimensional seismic clusters that take into account seismic location uncertainties and are embedded in a novel volcano-oriented Geographyc Information Systems (VolGIS) offering an interpretational environment comprising tomographic images and alternative geophysical models. The results show that a volume of very-low-seismicity is embedded in a high-velocity body, and acts as a zone of transition between transient magmatic events (west) and eastern deep seismicity related to the sliding eastern flank. The eastern cluster represents the 3D seismic signature of a deep (2–8 km below sea level) instability, affecting the portion of the eastern flank nearest to the feeding systems. This instability is likely caused by a combination of gravitational spreading and magmatic intrusions

To speak with the other's voice: reducing asymmetry and social distance in mental health care admission interviews

The aim of this article is to examine the case of adoption of characteristic features of the interlocutor's ‘voice’ in mental health care admission interviews at a public hospital in Buenos Aires, Argentina. We observed ethnographically that ‘speaking with the Other's voice’ is a strategy adopted by psychoanalysts to achieve clinical goals, though they overlook its wider implications and contradictions as it involves both professionals and patients. We will argue that patients adopt bureaucratic and psychiatric terms in order to decrease asymmetry and reorient the activity conducted between the professional and the client. On the other hand, professionals tend to consider social class, age, ethnicity or religion when adopting the patient's voice in an attempt to decrease social distance. These strategies are employed to accomplish different goals during the interview: to the patient, it is a way to show competence in the activity of medical consultation, indexing the highly valued voices of state institutions and psychiatric knowledge; to the professional, it is a strategy to achieve clinical goals by decreasing social distance and enhancing transference. Analysis will show the unequal distribution of voicing options for participants: while patients attempt to reduce asymmetry despite social distance, psychotherapists try to decrease social distance but maintain asymmetry. In conclusion, wider implications will be discussed for intergroup communication between professionals and clients.Fil: Bonnin, Juan Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Saavedra 15. Centro de Estudios E Investigaciones Laborales; Argentin