From the idea to the creation of an automated interpretation system of potential fields GMT-AUTO: step by step

• Дата: 2025
• Автори: Makarenko, I.B., Legostaeva, O.V., Savchenko, O.S.
• Формат: Стаття
• Мова: Ukrainian
• Опубліковано: Subbotin Institute of Geophysics of the NAS of Ukraine 2025
• Теми: automated systems; potential fields; automation of geological and geophysical data input into a computer; direct geophysical tasks; GMT-Auto complex; density modeling
• Онлайн доступ: https://journals.uran.ua/geofizicheskiy/article/view/325253
• Назва журналу: Geofizicheskiy Zhurnal

We outline the way to GMT-Auto, an automated complex for interpreting potential fields. It includes three stages: 1995—2000, 2001—2009 and in 2010- the present day. The work at each stage included solving direct problems and creating software for entering information presented on paper, and outputting the received data in the graphical format. In 1995—2000, solutions to the direct gravimetry problem for an inhomogeneous randomly truncated vertical rectangular prism were given and programs were developed for calculating gravitational effects in a rectangular (3D Gravity) and spherical (Sfera) coordinate systems. The MAP program was created. It is oriented towards working with maps that do not contain images of functions with discontinuities of the first order. Algorithms were improved and a software package was created, which made it possible to automatically build geophysical maps based on field values at discretionary points on the plane. In 2001—2009 the Geophys0 package was developed for automated interactive processing of black and white images of geological and geophysical data, the main content of which is information about contour lines and their discontinuities of the first order (faults, breaks, etc.). In 2003, a solution was found for the direct stationary geothermal problems about the distribution of heat and heat flow in the homogeneous half-space, generated by a stationary source (an inhomogeneous, randomly cut, vertical rectangular prism). In 2005, there was found a strict solution to the direct magnetometry problem for arandomly cut vertical rectangular prism and a quadrangular pyramid with anisotropic magnetic accessibility (the accessibility is given inside the bodies as a function of coordinates). In 2006, the Profile software package was developed to solve direct problems in gravimetry, magnetometry, and geothermy, in which the possibility of taking into account the terrain relief was additionally implemented. In 2009, to solve the direct problem of magnetometry, an algorithm for calculating magnetic fields for complex-shaped monoclinals and folded structures with homogeneous anisotropy was proposed, and the Magnitca program was created. From 2010 to the present, work has been carried out to create the interactive software complex Isohypse, for processing monochrome (black and white) and color (original maps) images of objects given in rectangular or geographic coordinate systems. In 2010—2011, the SpaceMap program was developed, which made it possible to enter information into the computer, represented graphically in the form of bodies (areas). In 2015, the Sfera program algorithm was improved, adding the ability to specify the depth of the roof and the base of the layer both as a number and as a file. In 2021, the GMT-Auto complex began to be used to build density models along the profile line. The experience of its application is presented both for solving regional problems and for solving complex applied problems of modern geology.