No abstract
Representative scales were established, based on the zoom level of Google Maps, for generating a catalogue of indicators from the scale-image relationship, into the Google Earth visualization system. It was possible to analyze some functionalities of the visualization system proposed, such as the depth of detail from image resolution and the images return. Therefore, samples of four land use were analyzed. Furthermore, to associate the multilevel mechanism of the visualization in Google Earth, a digital ruler was used as a tool that measures the pixels per inch into the screen. In consequence, it is possible to analyze the changing behaviour from one screen to another. With this, it is feasible to associate a specific mechanism to improve the relationship between the handling of several images covering a limiting territory, and the scales that best represents the themes described. Finally, 893 samples were analyzed in 32 points of the territory, between the coordinates 14° to 33° N and 86° to 119° W. Finally, the error percentage, the variance, and the standard deviation were estimated for determining the variation between the values calculated in different samples.
The Wixárika route was declared by the Government of the State of San Luis Potosí with a first proposal for a polygon as a state reserve area on 27th of October, 2000, and in 2001 the category of Natural Sacred Site is awarded. Initially, this region had an original area of 138,750 ha. Subsequently, the Federal Government of Mexico, through the National Commission of Protected Natural Areas (CONANP), creates the “Preliminary Justification Study”, where a larger polygon is proposed, including the Sacred Natural Sites for the Wixárika within the reserve. On the 3rd of November 2012, a group formed by scientists and researchers discussed the study carried out, in which they argued that the limits of the Reserve should respond to natural criteria defined by the watersheds of the basins, rather than linear geometric criteria, thus protecting hydrogeological, eco-systematic and social dynamics. So it is proposed adding to the previous polygon the water area of the basin, which represented an increase of 65,437.41 ha to the previously recognized within the PNA, decreeing a total area of 256,946.32 ha, according to the basin limit. However, after analyzing the zone, it was observed that other important elements were not analyzed in-depth and must be considered, such as; physiological, hydrological and topographical elements, meteorological and climatological phenomena, hydrogeology of the area as an adequate element of the basin delimitation, establishment and location of mining concessions. Also, fauna, flora and vegetation of the area were not studied. Thus, an evaluation of the soil was considered recognizing its relationship with toxic elements that could persist in the area. Similarly, an attempt was contemplated, including economic and social elements of the place. Consequently, it was proposed to expand the polygon, covering a new area of 293,388.42 ha. This expansion included all the elements described.
This research focused on the geospatial method application called Synthetic Aperture Radar Interferometry (InSAR) using Sentinel 1-A satellite images to determine the sinking incidence in the San Luis Potosí - Soledad de Graciano Sánchez conurbation area. In this study was carried out the processing and comparison of the sinking values resulting from the period 2014 to 2019, where the procedures showed that the sinking incidence that occurred in some areas of San Luis Potosí Valley was 13.4 cm, which means that a sinking of approximately 2.6 cm would be generated per year in the specific areas determined, as well as, with the results of the InSAR method was made a profiles graphic of the 5 years analyzed, with the aim of observing the behavior of soil sinking in the area studied. Likewise, 72 GNSS vertices were interpolated, which served to know the ground elevations in 2014, in order to correlate their differences according to the results of the interferometry process in the images using SNAP software.
el Dr. Sergio Archangelsky a la edad de 91 años. Esta fecha marcará un antes y un después en la vida profesional y personal de todos los que fuimos sus discípulos, y de todos aquellos paleobotánicos nacionales y extranjeros que de un modo u otro se sintieron atraídos e impresionados por su vasta trayectoria científica cuanto académica. Con sus estudios de vanguardia promocionó el conocimiento de la Paleobotánica argentina aquí y en el exterior dando un impulso a la disciplina en el país nunca antes logrado. La comunidad paleobotánica ha perdido a un MAESTRO EXCEPCIONAL y a un GRAN INVESTIGADOR.El Dr. Archangelsky nació el 27 de marzo de 1931 en Casablanca, Marruecos, y a edad muy temprana emigró con sus padres a la Argentina donde se establecieron para siempre. Sus padres, el Ing. Mikhail Archangelsky y Polina Ivanovna Axenova, se instalaron en un principio en Comodoro Rivadavia (provincia del Chubut) donde su padre trabajó en Yacimientos Petrolíferos Fiscales (YPF). Desde pequeño mostró su interés por las ciencias naturales y fue el eminente Geólogo Alejandro M. Piátnitzky, amigo de sus padres, quien determinó su férrea vocación hacia los fósiles cuando lo acompañaba en sus salidas al campo por los alrededores de la ciudad. Ya en
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