卷 23, 编号 2 (2023)
Articles
Assessing the continentality index of Western Siberia against the background of regional climate change
摘要
Quantitative assessment of the territory continentality is an urgent task, because in the conditions of climate change, the index of continentality can be taken into account when developing geographical forecasts of landscape development. The purpose of this study is to assess the change in the index of continentality of Western Siberia in the conditions of the current trend in climate development. The statistical series of observations on seven meteorological stations in Western Siberia served as the information base of the study. The long-term changes in the average January and average July temperatures, as well as the amount of precipitation for the cold (October-March) and warm (April-September) periods of the year were analyzed. Calculations for the time intervals of 1961–1990 and 1991–2015 allowed us to conclude that the climate continentality of Western Siberia is weakening under the conditions of regional climate development.
News of Saratov University. Ser. Earth sciences. 2023;23(2):76-79
76-79
Internet as an element of modern social infrastructure: Sociological and territorial aspects
摘要
The article is devoted to the analysis of the ways of using and accessing the Internet. In the course of the study, a sociological survey of respondents living in the city of Saratov was conducted, the results of which were compared with the average Russian statistical data.
News of Saratov University. Ser. Earth sciences. 2023;23(2):80-86
80-86
Evaluating the statistical significance of air temperature changes in the Northern hemisphere by statistical methods
摘要
The analysis of changes in the near-surface air temperature of the Northern Hemisphere is given. To identify years in which there was a violation of the series homogeneity, the stepwise trend method was applied using Kolmogorov statistics. It is shown that the identified homogeneous climatic intervals basically correspond to the natural climatic periods of the state of the Earth’s climate system. The assessment of the significance of temperature changes in homogeneous climatic areas was carried out by the method of confidence intervals using Student’s t-test. Based on the confirmed statistical significance, the conclusion is made about the climatic significance of changes in the surface air temperature of the Northern Hemisphere.
News of Saratov University. Ser. Earth sciences. 2023;23(2):87-92
87-92
Monitoring of annual variability of thunderstorm activity for climatic stations of Western Siberia
摘要
The article presents the study results of the annual variability of thunderstorm activity at nine climatic stations in Western Siberia over a fifty-year period from 1971 to 2020. The study revealed a complex quasi-periodic structure of thunderstorm activity series with the most pronounced amplitude of 7–8-year cycles for the forest-tundra and a 2–4-year cycle for the taiga zone, as well as forest-steppes. A synchronous course of increase and decrease periods in the frequency of thunderstorms for individual decades at the studied climatic stations in Western Siberia was revealed.
News of Saratov University. Ser. Earth sciences. 2023;23(2):93-96
93-96
On the migration of oil pollution in the active layer and the possibility of their penetration into permafrost
摘要
Based on the review of the published data, the article analyzes the study of the problem of oil pollution migration in the upper part of the geological environment in the conditions of the Far North, where the movement of oil pollution occurs mainly in the layer of seasonal freezing and thawing of the cryolithozone. The factors influencing the spreadability and transport of oil, including the focus on the processes of formation of possible migration routes into frozen rocks are considered. It was concluded that the processes of thawing and freezing of the active layer due to the displacement of oil from the freezing zone into the thawing zone have the biggest impact on the nature and distribution of oil pollution. The conclusion is made about the possibility of penetration of oil pollution from the contaminated active layer into the underlying permafrost.
News of Saratov University. Ser. Earth sciences. 2023;23(2):97-102
97-102
The results of exploring the Lower Artinskian deposits of the western Caspian on the territory of the Volgogradskoe Zavolzhye area with high-resolution wide-azimuth seismic survey
摘要
The article summarizes the comprehensive analysis of the results of interpretation for the materials of the wide-azimuth seismic survey MOGT-3D for the purpose of a detailed study of the geological structure of one of the sites of the Volgogradskoe Zavolzhye area to identify and prepare for drilling oil and gas prospective objects.
News of Saratov University. Ser. Earth sciences. 2023;23(2):103-110
103-110
Hydrothermally altered rocks – indicators of hydrocarbon unloading zones of the Krasnoleninsky arch (Western Siberia)
摘要
Our own research data as well as numerous publications of recent years on modern problems of oil potential in the West Siberian oil and gas province were used in this study. Based on the Palyanovskaya, Talinskaya and adjacent areas of the Krasnoleninsky arch, the issues of deposits structure and confinement to certain regional levels of the section, the problems of unconventional reservoirs formation in the zones of tectonic deformations and hydrothermal-metasomatic changes in pre-Jurassic basement rocks (Paleozoic granites), as well as problems of highly permeable “supercollector” (the lower horizons of the Jurassic complex – Sherkalinskaya formation) and an almost impermeable reservoir with difficult to recover huge hydrocarbon reserves (its upper horizons – Bazhenov formation) are discussed. The oil deposits distribution in the Jurassic part of the section was shown to comply with the fluid migration model with the participation of deep hydrocarbon fluid. New types of unconventional reservoirs have been identified in the basement granites and in the unloading zones in the Jurassic deposits of the sedimentary cover.
News of Saratov University. Ser. Earth sciences. 2023;23(2):111-130
111-130
About the participation of university meteorologists in the Great Patriotic War and their fates
摘要
The article is devoted to meteorologists – Saratov State University staff of the Faculty of Geography, who took part in the meteorological support of the front during the Great Patriotic War.
News of Saratov University. Ser. Earth sciences. 2023;23(2):131-140
131-140