Two geophysical lines of 16.5 and 17 km in length have been surveyed in Los Humeros Caldera, in central-eastern Mexico, in order to delineate preliminary areas of geothermal interest. The E-field ratio telluric method, which consist of collinear dipoles and…

From 12 to 24 January 1977 three portable seismic stations were intalled at the interior of Los Humeros Caldera in order to observe the microearthquake activity associated with it. Seven events of magnitude m ≈1.0 were located. Three of these…

A gravity survey was conducted in 1981 in La Presita geothermal area the city of Culiacan, Sinaloa, Mexico. A total of 306 stations were occupied in an area of approximately 290 km².The data have been reduced and processed by means…

A middle to Upper Devonian acidic intrusive from southern Quebec yields paleornagnetic direc- tions unlike those determined for the stable North American platform or the Avalon Zone. Thirty one (31) sites from the three different types of granites give mean…

Surface wind data, from four meteorological stations in Todos Santos Bay, are analyzed to study the local wind field. Statistical, rotary spectra, and principal components analysis (EOF) are used to describe the characteristics of the air flow. Diurnal and semidiurnal…

El sistema de control de expendio de bombonas de G.L.P. para el sistema PETROECUADOR, se basa en autentificar individuos utilizando Terminales biométricos de geometría de dedos, previa compra de cilindros de G.L.P. En cada punto de expendio, se encuentra un…