Variations in the Orbital Periods of Eclipsing Binaries RY Aqr,AK Vir,and AX Vul

Astronomy Reports - Variations in the orbital period of eclipsing binaries RY Aqr, AK Vir, and AX Vul are studied. It is shown these variations can be represented with equal accuracy in two ways:...     

Geoeffective Disturbances in the Solar Wind near the Solar Activity Minimum according to the Data of a Two-year Series of Observations of Interplanetary Scintillations with the BSA LPI Radio Telescope

Astronomy Reports - A joint analysis of the monitoring data of interplanetary scintillations with solar and geophysical data showed that at the descending phase of the 24 solar activity cycle, the...     

Concentrations of Chemical Elements in the Water and Suspended Matter of the Northern Dvina River and the Annual Gross Runoff to the White Sea

Doklady Earth Sciences - The results of four years of continuous investigations (from May 2015 through April 2019) of the elemental composition of the water of the Northern Dvina River are...     

Pb–Pb Age of Carbonate Rocks of the Kamo Group,Baikit Anteclise of the Siberian Platform

Doklady Earth Sciences - The first direct Pb–Pb dating of carbonate rocks of the Kamo Group has been carried out. The Pb–Pb age of carbonates of the lower units (the Madra, Jurubchen,...     

The Nature of Tungstenite of the Bystrinskoe Porphyry-Skarn Au–Fe–Cu Deposit (Eastern Transbaikalia,Russia)

Doklady Earth Sciences - Tungstenite of unusual shapes (spheroids, rings, threads, spirals, etc.) was found in scheelite of gold-bearing quartz–carbonate–pyrite–chalcopyrite...     

Main Sources of 134Cs in the Barents and Kara Seas (1960–2020)

Doklady Earth Sciences - The role of the short-lived 134Cs radionuclide in the formation of the radioecological background in the marine environment of the Arctic is studied. This paper analyzes...     

A Thermodynamic Indicator for Remote Assessment of the Productivity of a Hydrocarbon Reservoir

Doklady Earth Sciences - The local productivity of a reservoir on the territory of a hydrocarbon field was assessed remotely using thermodynamic indicator of the state of the geological...     

Methodology of Environmental Standardization for Natural Waters

Doklady Earth Sciences - This paper discusses sources of significant errors that occur in the course of determination of the primary environmental standard for natural waters: the maximum...     

Nonlinear Effects in the Formation of Water Quality

Doklady Earth Sciences - The indicators of the composition and quality of natural water are random variables. Since the “linear” approach to their assessment and forecast provides no...     

The First Data of U/Pb and 40Ar/39Ar Dating of the Pre-Dzhugdzhur Volcanics: New Evidence of Time Diversity in the Formation of Individual Sectors of the Okhotsk–Chukotka Volcanogenic Belt

Doklady Earth Sciences - The first data of U/Pb and 40Ar/39Ar dating of volcanogenic rocks of the Pre-Dzhugdzhur volcano-tectonic trough (PDVT) of the Okhotsk–Chukotka volcanogenic belt...