Subject and Purpose. In this work, the planet surface area relief is calculated using Improved Photoclinometry Method (IPCM) starting from a set of source images. Height deviations true altitudes are studied by computer simulation at small spatial scales (smaller than quarter area’s size). We seek to estimate these "local" errors in heights slopes images with different signal-to-noise ratios (SNRs). Methods Methodology. The improved photoclinometry method calculates most probable its Two...

We present new evidence for volcanic eruptions and lava flow emplacement on Venus within the last several decades. An integrated study of a radar‐dark unit in Bereghinia Planitia (∼28°E, ∼39°N) based Magellan data obtained 1993 reveals significant apparent microwave thermal emission excess, consistent with increased subsurface temperature due to very recent emplacement. The occupies stratigraphically youngest position area part is more than 15 years old because it was also observed radar map...

In order to assess the nature of crater‐associated radar‐dark diffuse features (DDFs) on Venus and understand their formation evolution, we analyzed Magellan radar roughness, emissivity, reflectivity data in vicinity craters accompanied by these features. Following others, assumed that DDFs are deposits (mantles) ejected material emplaced during impact crater. The majority parabolas (the youngest DDFs) characterized a smooth mantle‐atmosphere interface having low root‐mean‐square (rms)...

We have analyzed the radar‐dark parabola deposits associated with impact craters on surface of Venus using results Magellan radio experiments in both passive and active modes. The extent mantle is found to be much wider than dark features observed synthetic aperture radar (SAR) images. Using emissivity data, we classified coinciding parabolas into four types related differences ejecta deposition styles for different diameters, stages degradation crater‐related deposits. A model microwave...

Analysis of the Doppler spectrum Magellan Radar Altimeter echoes has revealed spatially coherent deflection echo center from nadir point (Tyler et al., 1992). We present and analyze a global map centroid radar altimeter echo, which, for plains Venus, characterizes degree anisotropy surface roughness in north–south direction at scales decimeters to kilometers. found hemispherical trend anisotropy: on average, equator‐facing slopes are steeper than pole‐facing slopes. searched globally...

The article deals with objective preconditions of forming stable bases the cluster theory and its specific features, attention is paid to historical aspects dialectical development theory. authors highlighted main tasks, accomplishment which necessary for achieving an effective policy in system national economy. opportunity using advantages potential opportunities clusters respect agricultural sphere economy grounded. model agro-industrial considered as one ways increase competitive...

<p>A new approach to development of the mathematical and software tools for synthesis control actions recovering an aircraft from a difficult spatial position is presented, using sufficient accumulated empirical data. When calculating actions, behavior pattern, which relevant flight situation arisen containing information about piloting by qualified crew, in use. Synthesized can be employed within newly created autopilots when performing modes or used correct influences performed...

На сегодняшний день страны БРИКС сталкиваются с рядом экологических вызовов, требующих скоординированных усилий и инвестиций для их эффективного решения достижения устойчивого развития. В статье рассмотрены основные направления государственной экологической политики стран БРИКС, уделено внимание многочисленным совместным инициативам, а также национальным программам, направленным на снижение выбросов парниковых газов, охрану водных ресурсов, управление отходами сохранение биоразнообразия. С...