The GIS-ENDDB algorithms and methods for geoinformation-expert data analysis

Abstract

The software of the geographical information system for studying the Earth's natural disasters (GIS-ENDDB) is focused on the research into cause-and-effect relations of catastrophic events in our planet's history. It contains data on the Earth's seismic activity, anomalies of heat flows (HF), gravitational field and tomography layers, detailed geographical relief, as well as data on cosmogenic structures distribution. To develop methods for analyzing these data, it has been added into the subsystems of information and mathematical software updates such as: the algorithm for building seismicity lineaments in terms of the Great circles (GC) of the Earth; the algorithms for constructing the contours of a maximum earthquake magnitudes and of the averaging earthquake mechanisms; the functions of geophysical fields visualization and the cross-section visualization of different seismicity characteristics; and tomography data. All these updates help to extend the capabilities of classical methods for geotectonic studies by a complex scientific-experimental approach allowing one to reveal tectonically active faults, to study the spatial relationship of seismicity and cosmogenic paleostructures (related to the historical past of the Earth), and, eventually, to interpret the data in terms of constructing seismic-geodynamic models of the lithosphere.

Morphotectonic and petrological characteristics of Permo-Triassic traps of Siberia

“…Maps of the crustal morphological structures compiled in [3] have been supplemented by maps of the lithospheric plate and upper mantle morphological structures for the entire PTTS region. Tomographic maps of transverse waves with vertical polarization were compiled in a depth interval of 50-700 km with an interval of 25 km in depth (Figure 11) using the GIS-ENDDB software [43][44] based on the method [45]. These data update the conclusions that there are no signs of the Khatanga-Ob threefold rift juncture between the slab lithospheric blocks of the WSP, SC and Kara sedimentary basin (Figure 11a); the existence of a single mantle field of PTTS volcano-plutonic magmatism (Figure 11b-d 8) Lama lake -authors' data for the volcanic section of its south margin; (9) Dyupkun lake -data for volcanic section of its margins [29]; (10) West SibLIP [92][93]; (11) South SibLIP data by S.D.…”

“…The latter requires the analysis of the heat and mass transfer processes in the convection area of the upper mantle and zones above the asthenosphere of the lithospheric mantle of the crust. , 300 (e), 400 (f), 500 (g), 600 (h), 700 (i) km (by data [45] in the form of the shadow GIS-ENDDB model [44], per units (SV-SV0)/SV0*100 %).…”

“…Characteristics of morphological structures of these magmatic systems have been recorded on tomographic sections (Figure 12). [45] in the form of sections GIS-ENDDB [44], per units (SV-SV0)/SV0*100 %).…”

“…This paper focuses on local data of structural control of trap magmatism in the SC Paleozoic platform cover and under the WSP Mesozoic cover obtained using GIS technologies [41][42][43] and supplemented by the analyses of the regional magmatism of SC and WSP, conducted in [34][35][36] and the forms of volcanic edifices and fractures of the earth's crust in the PTTS manifestation. Seismotomographic data visualization was carried out using an original data processing system GIS-ENDDB [43][44]. The system uses a tomographic model "SL2013sv" on a transverse SV-wave with vertical polarization [45] containing values of velocity deviations from the basic velocity SV0 by 28 depth levels to H = 700 km.…”

“…Figure 11. Tomographic maps of S waves anomalies with vertical polarization for the PTTS areas at the depths of 50 (a), 75 (b), 100 (c), 200 (d), 300 (e), 400 (f), 500 (g), 600 (h), 700 (i) km (by data[45] in the form of the shadow GIS-ENDDB model[44], per units (SV-SV0)/SV0*100 %).…”