METEOR-L Device on the Lunar Orbital Vehicle Luna-26: Space Dust Detector     

Slyuta  E. N.  Vysochkin  V. V.  Ivanov  V. V.  Makovchuk  V. Yu.  Nazarov  A. I.  Pogonin  V. I.  Roskina  E. A.  Safronov  V. V.  Tatsiy  L. P. 《Solar System Research》2021,55(5):437-445

Solar System Research - The ionization-type cosmic dust detector METEOR-L is being developed for the lunar orbiter Luna-26 and is designed to study the distribution of meteoric bodies in space by...  相似文献   

TERMO-LR Experiment on the Luna-27 Lander: Study of Thermophysical,Physicomechanical, and Electromagnetic Properties of the Lunar Soil     

Slyuta  E. N.  Marov  M. Ya.  Dunchenko  A. G.  Makovchuk  V. Yu.  Morozov  O. V.  Nazarov  A. I.  Ivanov  V. V.  Pogonin  V. I.  Roskina  E. G.  Safronov  V. V.  Kharlov  B. N.  Tatsiy  L. P. 《Solar System Research》2021,55(5):446-466

Solar System Research - The device is being developed for the TERMO-LR experiment on the Luna-27 lunar lander; it is intended for contact geophysical measurements of various properties of the lunar...  相似文献   

Local Katabatic Winds of the Russian Federation and Their Observation Using Synthetic Aperture Radar Imagery     

Ivanov  A. Yu. 《Izvestiya Atmospheric and Oceanic Physics》2020,56(9):989-1006

Izvestiya, Atmospheric and Oceanic Physics - Data from synthetic aperture radars (SAR) provide new opportunities for observing and studying local katabatic winds (bora and foehn) over the seas in...  相似文献   

Boguslawsky Crater on the Moon: Landing Site Selection for the <Emphasis Type="Italic">Luna–Glob</Emphasis> Mission Descent Module     

M. A. Ivanov  M. Ya. Marov  A. T. Basilevsky  Yu. A. Kostitsyn 《Solar System Research》2018,52(7):570-577

The article reviews the results of photo geological study of the lunar surface in terms of selection of most favorable landing sites from the point of view of science merit and safety for the Luna—Glob mission descent module.  相似文献   

Peculiarities of Polluted Water Spreading from a Submarine Source in Stratified Coastal Environment     

V. G. Bondur  V. A. Ivanov  V. V. Fomin 《Izvestiya Atmospheric and Oceanic Physics》2018,54(4):386-393

We study the spreading of wastewaters from an underwater source in a stratified coastal environment using the results of satellite monitoring and mathematical modeling. The problem is considered as applied to deepwater discharge in the region of Golubaya Bay of the Black Sea near Sebastopol. The main factors preventing upwelling of pollution to the sea surface are analyzed on the basis of a numerical model. It is shown that peculiarities of wastewater spreading depend on the character of stratification and velocity of the background current. The main factor influencing the uplift of these waters to the surface is the existence of water layers with high vertical gradients of water density. We reveal the structure of the wastewater field consisting of a plume and a jet extended in the direction of the background current, which is located in the density interface. If stratification is weak, the plume may reach the sea surface and form a local region of water pollution, which is recorded in multispectral satellite images. It is found that the mass of polluted waters is characterized by negative anomalies of temperature and salinity.  相似文献   

Approximate traveltime inversion in downhole microseismic monitoring     

Sergey Yaskevich  Anton A. Duchkov  Yuriy Ivanov 《Geophysical Prospecting》2020,68(3):918-925

In downhole microseismic monitoring, accurate event location relies on the accuracy of the velocity model. The model can be estimated along with event locations. Anisotropic models are important to get accurate event locations. Taking anisotropy into account makes it possible to use additional data – two S-wave arrivals generated due to shear-wave splitting. However, anisotropic ray tracing requires iterative procedures for computing group velocities, which may become unstable around caustics. As a result, anisotropic kinematic inversion may become time consuming. In this paper, we explore the idea of using simplified ray tracing to locate events and estimate medium parameters. In the simplified ray-tracing algorithm, the group velocity is assumed to be equal to phase velocity in both magnitude and direction. This assumption makes the ray-tracing algorithm five times faster compared to ray tracing based on exact equations. We present a set of tests showing that given perforation-shot data, one can use inversion based on simplified ray-tracing even for moderate-to-strong anisotropic models. When there are no perforation shots, event-location errors may become too large for moderately anisotropic media.  相似文献   

Vertical Distribution of Methane in Baikal Water     

Mizandrontsev  I. B.  Kozlov  V. V.  Ivanov  V. G.  Kucher  K. M.  Korneva  E. S.  Granin  N. G. 《Water Resources》2020,47(1):122-129

Water Resources - Data on the vertical distribution of dissolved methane in Baikal water column are analyzed. The zone of open lake now shows an increase in the concentrations of dissolved methane...  相似文献   

Geomorphological Analysis of ExoMars Candidate Landing Site Oxia Planum     

Ivanov  M. A.  Slyuta  E. N.  Grishakina  E. A.  Dmitrovskii  A. A. 《Solar System Research》2020,54(1):1-14

Solar System Research - The article is devoted to a detailed photogeological and topographic analysis of the surface in the region of Oxia Planum, which is the most likely landing site for the...  相似文献   

The Structure and Formation Conditions of the Callovian–Oxfordian Deposits of Sudak Bay (Crimea)     

R. R. Gabdullin  N. V. Badulina  E. A. Bakai  E. V. Rubtsova  A. Yu. Yurchenko  E. V. Karpova  A. V. Ivanov  M. A. Varzanova  A. V. Sergienko  T. A. Konovalova  M. V. Parakhina 《Moscow University Geology Bulletin》2018,73(4):346-360

The composition and origin of the Callovian–Oxfordian deposits of the Sudak Bay were characterized on the basis of the generalization and analysis of our own results, as well as published and unpublished data. The botanical future was first implemented for the geological mapping of the Oxfordian deposits.  相似文献   

Climatic Changes in the Dynamic Topography and Geostrophic Circulation of the Arctic Ocean     

Timokhov  L. A.  Ivanov  V. V.  Kassens  H.  Lebedev  N. V.  Frolov  I. Ye.  Hölemann  J. 《Doklady Earth Sciences》2018,480(1):685-688

Doklady Earth Sciences - According to historical oceanographic data, anomalies in the dynamic topography during the winter period were calculated and two climatic stages of dynamic condition of the...  相似文献