Borehole information proces-sing in the GIS INTEGRO.
The article deals with the processing system of borehole information in the GIS INTEGRO. The following is the description of the structure of the storage wells. Describes the ability to load, edit, and visualize information of single well and group of wells in the GIS INTEGRO.
In the description of the load data the problem of working with data of any structure and presents the solution implemented in the processing system of borehole information in the GIS INTEGRO. Examples of visualization of borehole information in the GIS INTEGRO.
GIS-based approach to estimating area prospects for mineral deposits (on example of groundwater deposits of Eastern Siberia territory).
Parshin A.V., Auziņa L.I., Prosekin S.N., Blinov A.V., Kosterev A.N., Lonshakov Gr.S., Usmanova A.M., Shestakov S.A., Davydenko Yu.A.
Solves the problem of ranking the territory by degree of prospect for a useful component on the basis of data collected at the pre-field stage of geological exploration in situation with a limited set of geo-information, that insufficient to make informed decisions on the direct search criteria. Describes the main methodological and technical positions of an integrated approach which allows for a more reasonably evaluate the prospects of the area for resources. It is based on the use of archival maps and remote sensing data, calculation of additional layers on the basis of geological and topographic maps, the analysis of geophysical fields, factor analysis, polyelement mapping. In this example given the estimation of watery of upper hydrodynamic zone on the territory of Eastern Siberia in order to optimize geological exploration on ground water deposits, in particular, reasonable planning of exploratory wells in the early stages of work on the area. Despite the difficult geological and hydrogeological conditions of Eastern Siberian oil and gas province, developed technology has allowed to identify a set of universal factors associated with watery. Proposes a methodology of their calculation, mapping and aggregation into the integral index of water abundance, which reflects the degree of prospects for groundwater in each calculated point of map and therefore convenient for visual analysis. The technology is based on open GIS, but can be implemented in any universal geoinformation software.
Physical properties of sand and sandy loam overlying formation in integral suffosion assessment within the carbonate karst area.
Drobinina E.V., Kataev V.N.
The problem of integral assessment of suffosion hazard in the carbonate karst areas within the Moscow region are considered in the article. Assessment methods is based on score method, that widely applicable in engineering geology, and adapted for use in a software product ArcGIS. The main point of the methodological aspect is to lead to score form a number of factors according to expert approach taking into account weight of each factors depending on its role in the development process suffosion. Map constructed by combining of the maps of each factors, expressed in score form is the result of integral assessment of suffosion hazard.
Forest canopy GIS mapping based on airborne laser scanning data.
Novakovsky B.A., Kovach N.S., Entin A.L., Kalinovskii L.V.
The article describes features of the use of airborne laser scanning data for forest mapping (forest canopy height) with GIS techniques. Mapping technique for forest canopy height mapping was developed. This technique has been evaluated on the test site (National Forest of Mark Twain, Missouri, USA). Forest canopy height map can be used for identifying consistent patterns of spatial distribution of the forest canopy height. Also it allows determining the height of the trees. The maps created with the technique proposed can be applied in forestry, topographic mapping, and geographical studies.
Criterial approach to estimate of performance of Physical-Geological Model (PGM) to real objects.
Nikitin A.A., Cheremisina E.N.
Are estimated essential and sufficient conditions of performance of PGM to real objects from the position of:
– mathematical statement;
– Geological content;
– using of Geological Information Systems.
The using of hydrological parameters for exploration of geochemical anomalies in watershed of the Gam and Cau rivers (Vietnam).
Savichev O.G., Nguyen V.L., Domarenko V.A.
The analysis of a chemical composition of river waters, load sediments of the small rivers in area of displays of Zn and Pb ores in northern part of Vietnam in 2015-2016 is executed. It is offered to use as additional search criteria probability of overlapping of a river network with tectonic faults P(r|f) and a ratio of the common area of a river basin and its part without expressed channel networks F/F0. It is shown that the probability of detection of abnormal concentration Zn and Pb sharply grows under condition of P(r|f) > 0,6 and F/F0 < 6-7. The physical sense of use of the specified hydrological parameters consists that:
1) the primary aura of dispersion above an ore body is as much as possible kept at the minimal drainage of territory;
2) the secondary aura of dispersion is identified most effectively at overlapping a river network and tectonic faults.
Method and features for detection of cultural layer of the archaeological sites on the multispectral images data.
Nazmutdinova A.I., Milich V.N., Zhurbin I.V.
The method for identification the areas with significant humus layer power with using the results of multispectral imagery from the unmanned aerial vehicle is presented. The areas boundaries are determined by analysis of multispectral data with subsequent calculation of the indicator. Methodology of indicator designing for the areas with characteristic properties (in this case – the areas of the powerful soil layer characterized by intensive processes of soil formation) is based on the two-dimensional discrete wavelet transform and calculating the attributes – the average values of the four components of the transform result. Haar and Shannon-Kotelnikov wavelet functions are used. The indicator is the average of the two most informative attributes which were selected on the basis of the cross-correlation coefficients between their values and the brightness values on the distribution soil resistivity map. The line segment crossing the most typical areas of the image was used as the method baseline. Comparison of the indicator values image with the map of humus layer power confirms the correctness of the proposed method to identify the cultural layer of the archaeological sites with using the multispectral data. The multispectral data covers large areas and characterizes the objects reflective ability; therefore it provides a promising tool for the preliminary identification of the archaeological sites and the preservation degree assessing of their cultural layer.