Structure of the Earth’s Crust in the Northeast Aldan Anteclise (Siberian Platform): Diamond Potential

Geotectonics - The gravitational and magnetic fields of the eastern Aldan anteclise, within the area bounded by longitudes 126° and 138° E and latitudes 58° and 64° N, are...     

Effect of Atmospheric Pressure on the Deformation of the Earth’s Crust

Doklady Earth Sciences - A method for estimating the contribution of atmospheric pressure variations to the deformation of the upper layer of the Earth’s crust using synchronous data from...     

Results of Modeling Sources of Magnetic Anomalies in the Earth’s Crust in the Middle Urals

Doklady Earth Sciences - The results of studying the structural features of an anomalous magnetic field and modeling sources in the Earth’s crust of the Middle Ural region are presented. A...     

Self-Generating Processes in the System Atmosphere–Earth’s Crust

Doklady Earth Sciences - Based on analysis of experimental data, the self-generating processes in the system atmosphere–Earth’s crust are considered, in which energy is sequentially...     

Principle of Formation of the Earth’s Crust under Natural Stress Conditions

This article formulates the experimentally substantiated physical principle that the natural stress condition of the Earth’s crust is formed due to the superposition of stress fields, which is caused by the gravitational forces of the Earth and by tectonic and astrophysical forces that are produced by physical processes in space. The natural stress field is represented by the stress tensor regulatory components: \(\sigma _{z}^{{\text{N}}}\) = \( - \gamma H + {{\sigma }_{{zT}}} + {{\sigma }_{{z{\text{AF}}}}}\), \(\sigma _{x}^{{\text{N}}}\) = \( - \lambda \gamma H + {{\sigma }_{{xT}}} + {{\sigma }_{{x{\text{AF}}}}}\), \(\sigma _{y}^{{\text{N}}}\) = \( - \lambda \gamma H + {{\sigma }_{{yT}}} + {{\sigma }_{{y{\text{AF}}}}}\).     

Velocities of Present-Day Horizontal Movements in the Central Sector of the Greater Caucasus according to GPS Observations and Their Relation to Tectonics and the Deep Structure of the Earth’s Crust

The results of the first GPS measurements along the geophysical profile that intersects all major geological structures of the Osetiya region of the Greater Caucasus are presented. The results of the measurements are interpreted in comparison with those of neotectonic studies and data on the deep structure.     

The theory of magnetic hole formation in the vicinity of the Earth’s magnetoshere

Doklady Earth Sciences -     

An Approach for Studying of the Earth’s Crust Structure at Full Thickness by Means of River Seismic Exploration

Doklady Earth Sciences - The possibility of using river seismic data for oil and gas exploration to study the deep structure of the Earth’s crust is shown. This method uses water seismic...     

Stress State of the Earth’s Crust and Seismotectonics of Western Sichuan,China

Geotectonics - The results of using a technology for zoning hazardous faults developed at the Institute of Physics of the Earth based on natural stress data are presented. The source of these data...     

Masses of carbon in the Earth’s hydrosphere

Recent data were summarized on the concentration and mass of inorganic and organic carbon in reservoirs of the Earth’s hydrosphere. We compared carbon masses and accumulation conditions in the surface hydrosphere and waters of the sedimentary shell and proportions between carbonate, dissolved, and suspended particulate organic carbon. It was shown that the total masses of carbon in the surface hydrosphere and in the waters of the sedimentary shell are approximately equal to 80 × 10¹⁸ g C at an organic to carbonate carbon ratio of 1 : 36 and 1 : 43, respectively. Three main forms of organic compounds in the ocean (living organisms, suspended particles, and dissolved species) occur in the proportion 1 : 13 : 250 and form the pyramid of masses 4 × 10¹⁵ g, 50 × 10¹⁵ g, and 1000 × 10¹⁵ g C_org. The descending sequence of the organic to carbonate carbon ratio in water, ocean (1 : 36) > glaciers (1 : 8) > lakes (1 : 2) > rivers (1 : 0.6) > wetlands (1 : 0.3), is in general consistent with an increase in the same direction in the mean concentrations of organic matter: 0.77 mg C_org/L in the ocean, 0.7 mg C_org/L in glaciers, 6–30 mg C_org/L in lakes, 15 mg C_org/L in rivers, and 75 mg C_org/L in wetlands. Both the mean concentrations and masses of dissolved organic matter in the pore waters of oceanic sediments and in the waters of the sedimentary shell are similar: 36–37 mg/L and 5 × 10¹⁸ and 5.6 × 10¹⁸ g, respectively. The mass of carbonate carbon in the pore waters of the ocean, (19–33) × 10¹⁸ g, is comparable with its mass in the water column, 38.1 × 10¹⁸ g.     

Features of the Influence of Weather Conditions on the Deformation Processes of the Upper Layer of the Earth’s Crust

Doklady Earth Sciences - The influence of the temperature and moisture content of the near-surface soil layer on variations of the barodeformation interaction of the boundary layer of the...     

Examples of Simultaneous Appearance of Deformations of the Earth’s Crust with Hour-long Period and Earthquakes

Doklady Earth Sciences - Records from broadband seismic station AAK located on Kirgiz Ridge, Tien Shan, are presented. The episodes of discrepancy between tectonic displacements and tidal...     

Lateral protrusions in the structure of the Earth’s lithosphere

The factual material and modeling results concerning the geology of specific structural elements defined as lateral protrusions, or flowing layers, are considered. The formation of such structural elements is a fundamental phenomenon that controls many features of the structural evolution and geodynamics of platform basement and foldbelts. A lateral protrusion, or flowing layer, is a spatially constrained, nearly horizontal geological body with attributes of 3D tectonic flow (rheid deformation) and lateral transport of rock masses. Flowing layers are large lateral protrusions that play important role in the structure of the continental and oceanic lithosphere. They embody the internal mobility of huge rock bodies and confirm the possibility of their lateral redistribution at different depths of the continental lithosphere. The lateral displacement of rocks within such assemblies may occur in the regime of cold deformation, heating, metamorphism, and ductile flow of rocks under subsolidus conditions or in the process of their partial melting.     

The westward drift of the Earth’s oscillations after earthquakes

The records of strong earthquakes (December 26, 2004, Sumatra; February 27, 2010, Chile; and March 11, 2011, Tohoku) from broadband IRIS seismic stations are analyzed. Several days after the events, oscillations of 128–130 minutes in period start and last for about a month. The period of oscillations exceeds that of the Earth’s spheroidal eigen oscillation with the lowest frequency (53.9 min) by a factor of about two. Oscillations are of opposite polarity at stations located near the epicenters and at the symmetric point in the other hemisphere of the Earth. They manifest as trains of fluctuations migrating westward at 2.5° per hour. The amplitude of oscillations is up to few μGal.     

The influence of tropical cyclones upon the Earth’s crust

Doklady Earth Sciences - This paper discusses the influence of tropical cyclones (TCs) upon the Earth’s crust beneath the ocean bottom, which is associated with rapid variations of pressure...