scholarly journals Analysis of the Content of Hydrogen Sulfide in the Air of the City of Atyrau

2021 ◽  
Vol 16 (3) ◽  
pp. 479-483
Author(s):  
Mansiya Yessenamanova ◽  
Zhanar Yessenamanova ◽  
Anar Tlepbergenova ◽  
Gaukhar Batyrbayeva
Keyword(s):  
Hydrogen Sulfide ◽  
Caspian Sea ◽  
Maximum Permissible Concentration ◽  
Air Pollutant ◽  
Oil Refinery ◽  
The Caspian Sea ◽  
Atmospheric Air ◽  
The North ◽  
The Republic ◽  
The City

This study is aimed at analyzing the content of hydrogen sulfide in the air of the city of Atyrau, located in the northern part of the Caspian Sea of the Republic of Kazakhstan. The analysis was carried out on the basis of monitoring the indicators of the Republican State Enterprise "Kazhydromet" from 8 points located in different directions from the Atyrau oil refinery. Measurements of atmospheric air pollution are made by the GANK-4AR gas analyzer designed for continuous automatic measurement of concentrations of pollutants in the atmospheric air. Hydrogen sulfide was selected as an indicator air pollutant. Atyrau oil refinery is the main object of pollution of the territory of the city of Atyrau, located in the western part of the Republic of Kazakhstan, on the shore of the Caspian Sea. The results obtained show that the content of hydrogen sulfide in the territory of the city of Atyrau in most places shows an excess of the maximum permissible concentration. Especially the excess is observed in the north-western part up to 4-8 maximum permissible concentrations. At two points (in the north-eastern and western parts), the content of hydrogen sulfide did not exceed the maximum permissible concentration.

scholarly journals Spatio-temporal variability of organic matter contents in the waters of the Caspian Sea

2019 ◽  
Vol 46 (1) ◽  
pp. 70-81
Author(s):  
A. I. Agatova ◽  
N. I. Torgunova ◽  
E. A. Serebryanikova ◽  
L. K. Dukhova
Keyword(s):  
Organic Matter ◽  
Hydrogen Sulfide ◽  
Caspian Sea ◽  
Vertical Mixing ◽  
Qualitative Change ◽  
Border Region ◽  
The Caspian Sea ◽  
Sea Levels ◽  
The North ◽  
Spatio Temporal

We analyzed spatio-temporal changes in concentrations and elemental compositions of dissolved organic matter in the waters of the Caspian Sea over the period 2010–2015. These studies showed that over the past 5 years of lowering of sea levels, mean concentrations of Corg and Norg remained virtually unchanged, whereas concentrations of Porg decreased more than three-fold, suggesting a qualitative change in organic matter. Based on data averages, concentrations of Corg, Norg, and Porg in Southern waters were slightly higher than in the North and Middle-Caspian waters during the monitoring period. In deep areas at the border region of hydrogen sulfide occurrence, concentrations of Corg, Norg, and Porg increase. Hence, the presence of hydrogen sulfide in the deep waters of the Derbent and South Caspian basins, and the corresponding increase in organic matter contents, indicates no radical improvement of vertical mixing of the sea in these areas during the eight years of our regression model. Moreover, according to the carbohydrate distribution, organic substances of petroleum hydrocarbons contribute considerably to a common pool.

scholarly journals Assessment and regulation of the urbanized territory atmospheric air condition of the Karaganda city of the Republic of Kazakhstan

2021 ◽  
Vol 265 ◽  
pp. 02006
Author(s):  
Yelena Tseshkovskaya ◽  
Elena Golubeva ◽  
Nataliya Tsoy ◽  
Aigul Oralova ◽  
Yuriy Obukhov ◽  
...  
Keyword(s):  
Carbon Monoxide ◽  
Hydrogen Sulfide ◽  
Phenol Formaldehyde ◽  
Pollution Index ◽  
Atmospheric Air ◽  
Maximum Coverage ◽  
Urbanized Territory ◽  
The Republic ◽  
Almost All ◽  
The City

The work is devoted to the assessment of the atmospheric air on urbanized territories of Karaganda. This work determines the content of 11 pollutants. Measurements were carried out at 14 route posts with the maximum coverage of the entire city territory in June and January in order to obtain seasonal dynamics of atmospheric air pollution. As a result of measurements in July, the maximum single-time content of carbon monoxide, phenol, formaldehyde, hydrogen sulfide, and methyl mercaptans was recorded. In January, carbon monoxide predominates in the city’s air from pollutants, and increased concentrations of hydrogen sulfide are also observed in most parts of the city. Based on the results obtained, the atmospheric pollution index was calculated for 5 substances. Measurements of the pollutants were carried out at different times of the day. It was found, that contamination in almost all analyzed substances is higher in the daytime and in the evening. The main harmful impurities in the air of Karaganda are ozone, carbon monoxide, hydrogen sulfide, phenol, formaldehyde and methyl mercaptans. Ammonia was detected periodically. Based on the results the suggestions for improvement of the atmospheric air condition in the research territory were developed and adopted.

ICE CONDITIONS IN THE NORTH-WESTERN PART OF THE CASPIAN SEA IN THE MODERN PERIOD

2020 ◽  
Vol 19 (6) ◽  
pp. 4-17
Author(s):  
Nepomenko Leonid ◽  
◽  
Popova Natalia ◽  
Zubanov Stepan ◽  
Ostrovskaya Elena ◽  
...  
Keyword(s):  
Caspian Sea ◽  
The Caspian Sea ◽  
The North ◽  
Modern Period ◽  
Ice Conditions ◽  
North Western

scholarly journals The length of coastlines in Ptolemy's Geography and in ancient periploi

2018 ◽  
Vol 9 (1) ◽  
pp. 9-24 ◽  
Author(s):  
Dmitry A. Shcheglov
Keyword(s):  
Caspian Sea ◽  
Simple Explanation ◽  
The Caspian Sea ◽  
The North ◽  
True Value ◽  
The Earth ◽  
Erroneous Estimate ◽  
Remarkable Agreement ◽  
East West

Abstract. The lengths of the coastlines in Ptolemy's Geography are compared with the corresponding values transmitted by other ancient sources, presumably based on some lost periploi (literally "voyages around or circumnavigations", a genre of ancient geographical literature describing coastal itineraries). The comparison reveals a remarkable agreement between them, suggesting that Ptolemy relied much more heavily on these or similar periploi than it used to be thought. Additionally, a possible impact of Ptolemy's erroneous estimate of the circumference of the Earth is investigated. It is argued that this error resulted in two interrelated distortions of the coastal outlines in Ptolemy's Geography. First, the north–south stretches of the coast that were tied to particular latitudes are shown compressed relative to the distances recorded in other sources in roughly the same proportion to which Ptolemy's circumference of the Earth is underestimated relative to the true value. Second, in several cases this compression is compensated by a proportional stretching of the adjacent east–west coastal segments. In particular, these findings suggest a simple explanation for the strange shape of the Caspian Sea in Ptolemy's Geography.

scholarly journals Mental health services in Azerbaijan

2004 ◽  
Vol 1 (3) ◽  
pp. 16-17
Author(s):  
Fuad Ismayilov
Keyword(s):  
Mental Health ◽  
Soviet Union ◽  
Mental Health Services ◽  
Health Services ◽  
Caspian Sea ◽  
Total Population ◽  
The Other ◽  
The Caspian Sea ◽  
The North ◽  
The Soviet Union

Azerbaijan is a nation with a Turkic population which regained its independence after the collapse of the Soviet Union in 1991. It has an area of approximately 86 000 km2. Georgia and Armenia, the other countries comprising the Transcaucasian region, border Azerbaijan to the north and west, respectively. Russia also borders the north, Iran and Turkey the south, and the Caspian Sea borders the east. The total population is about 8 million. The largest ethnic group is Azeri, comprising 90% of the population; Dagestanis comprise 3.2%, Russians 2.5%, Armenians 2% and others 2.3%.

scholarly journals Самовольные переселенческие рыбацкие поселения на калмыцких землях (вторая половина XVIII–XIX в.)

2021 ◽  
Vol 14 (4) ◽  
pp. 685-696
Author(s):  
Sergey S. Belousov ◽  
Keyword(s):  
Social Class ◽  
Caspian Sea ◽  
Harmful Effect ◽  
The State ◽  
Fishing Industry ◽  
The Caspian Sea ◽  
Russian State ◽  
The Republic ◽  
Historical Comparative ◽  
State Archives

Introduction. The article aims at analyzing the state policy regarding unauthorized fishing settlements of migrants on the Kalmyk pasturesin the period between the second half of the 18th and 19th cc. to better understand the processes of historical development of the Caspian territories of Kalmykia and of the Russian Caspian region. Accordingly, the lines of research were as follows: to examine the causes for unauthorized settlements and the dynamics of the state policies in the region, to study the migrants (settlers) in terms of the irethnicity, social class, and occupation, as well as their relationship with the authorities. Data and methods. The study was based on materials of the Russian State Historical Archives, the State Archives of the Astrakhan Region, the National Archives of the Republic of Kalmykia, and published sources. Both historical-genetic and historical-comparative methods were employed for the analysis of the data. Results. The author investigated the history of each of the unauthorized fishing settlement, the migrants’ backgrounds in terms of ethnicity, social class, and occupation, and the government’s policies in relation to the migrants. The study shows that such settlements were related to the growth of fishing industry in the region and, partly, to the government’s military and policing practices on the coast of the Caspian Sea. The authorities began to deal seriously with the problem of unauthorized fishing settlements on the Kalmyk pastures from the mid-19thcentury, with the start of transformation in the fishing industry. At the turn of the 20th century, the settlements were removed from the control of the Kalmyk authorities and were legalized, then, the process of their administrative-territorial and land structuring was started to finally complete in the second decade of the 20thcentury. Conclusions. The policy of the authorities in relation to unauthorized fishing settlements on the Kalmyk pastures differed from that in other areas of the Kalmyk steppe. In Mochagi, the authorities did not insist on the removal of such unauthorized settlements and negotiated with the settlers, and only if the latter rejected the proposed solutions for staying on the Kalmyk pastures, the question about their eviction was raised. Such policies on the problem of settlements on the coastal strip of the Caspian Sea, namely in Mochagi, were justified by the interests of the fishing industry to prevent any harmful effect in case of removal of villages and their inhabitants.

scholarly journals Geothermal field and geology of the Caspian Sea region

2019 ◽  
pp. 104-118 ◽  
Author(s):  
Vladimir I. Zui ◽  
Siamak Mansouri Far Far
Keyword(s):  
Heat Flow ◽  
Flow Pattern ◽  
Caspian Sea ◽  
Sedimentary Basins ◽  
Geothermal Field ◽  
Flow Density ◽  
General Tendency ◽  
The Caspian Sea ◽  
Northern Iran ◽  
The North

The Caspian Sea and adjacent areas form the vast oil and gas-bearing megabasin. It consists of North Caspian, Middle Caspian, and South Caspian sedimentary basins. The granite-metamorphic basement of the basins becomes from north to south younger in the direction from Early Precambrian to Early Cimmerian age. It represents a transitional zone from the southern edge of the East European Craton to Alpine folding. Geothermal investigations have been carried out both in hundreds of deep boreholes and within the Caspian Sea and a few preliminary heat flow maps were published for the Caspian Sea region. All they excluded from consideration the southern part of the region within Iranian national borders. We prepared a new heat flow map including the northern Iran. The purpose of the article is to consider heat flow pattern within the whole Caspian Sea region including its southern part. Two vast high heat flow anomalies above 100 mW/m2 distinguished in the map: within the southwestern Iran and in waters of the Caspian Sea to the North of the Apsheron Ridge, separated by elongated strip of heat flow below 50 –55 mW/m 2 . A general tendency of heat flow from growing was distinguished from the Precambrian crustal blocks of the North Caspian Depression to the Alpine folding within the territory of Iran. Analysis of the heat flow pattern is discussed and two heat flow density profiles were compiled.

scholarly journals Benchmarking Analysis of Factors Influencing Container Traffic in the Port of Rijeka

Pomorstvo ◽  
2019 ◽  
Vol 33 (2) ◽  
pp. 119-129
Author(s):  
Antonija Petrlić ◽  
Nataša Pavletić
Keyword(s):  
Maritime Transportation ◽  
Eastern European ◽  
Competitive Advantages ◽  
The North ◽  
Overall Performance ◽  
The Republic ◽  
Eastern European Countries ◽  
The City ◽  
North Adriatic Sea ◽  
Economic Function

Traditionally, ports have been regarded as hubs responsible for the reception of ships and passengers, but nowadays they have a much wider economic function, being clusters of various activities directly or indirectly linked to maritime transportation and seaborne trade, among which container traffic is the most important segment. The Port of Rijeka as the largest Croatian cargo port, positioned in the North Adriatic Sea, has exceptional but not fully exploited opportunities for further economic development of importance not just for the port and the city but for the Republic of Croatia as well. In addition, its geostrategic position makes it an important international port for Central and South Eastern European countries. The aim of this paper is to investigate and identify the current position of the Port of Rijeka (hereinafter Rijeka) in relation to the container business and, using Benchmarking as the research method, to analyse the established five main factors that have to be taken into consideration where its efficiency is compared to the statistically proven “best container port” in the region – the Port of Koper (hereinafter Koper). The results show significant competitive advantages of the Port of Koper almost in any of the analysed factors. Therefore, recommendations are given for further actions and improvement according to the natural advantages that Rijeka has to utilize in order to enhance its competitiveness and overall performance.

scholarly journals Numerical modelling of the Caspian Sea tides

Ocean Science ◽  
2020 ◽  
Vol 16 (1) ◽  
pp. 209-219
Author(s):  
Igor P. Medvedev ◽  
Evgueni A. Kulikov ◽  
Isaac V. Fine
Keyword(s):  
Caspian Sea ◽  
Ocean Model ◽  
Tidal Range ◽  
The South ◽  
Tidal Dynamics ◽  
The Caspian Sea ◽  
Sea Levels ◽  
The North ◽  
Anticlockwise Rotation ◽  
Diurnal Tides

Abstract. The Caspian Sea is the largest enclosed basin on Earth and a unique subject for the analysis of tidal dynamics. Tides in the basin are produced directly by the tide-generating forces. Using the Princeton Ocean Model (POM), we examine details of the spatial and temporal features of the tidal dynamics in the Caspian Sea. We present tidal charts of the amplitudes and phase lags of the major tidal constituents, together with maps of the form factor, tidal range, and tidal current speed. Semi-diurnal tides in the Caspian Sea are determined by a Taylor amphidromic system with anticlockwise rotation. The largest M2 amplitude is 6 cm and is located in Türkmen Aylagy (called Turkmen Bay hereafter). For the diurnal constituents, the Absheron Peninsula separates two individual amphidromes with anticlockwise rotation in the north and in the south. The maximum K1 amplitudes (up to 0.7–0.8 cm) are located in (1) the south-eastern part of the basin, (2) Türkmenbaşy Gulf, (3) Mangyshlak Bay; and (4) Kizlyar Bay. As a result, the semi-diurnal tides prevail over diurnal tides in the Caspian Sea. The maximum tidal range, of up to 21 cm, has been found in Turkmen Bay. The strongest tidal currents have been located in the straits to the north and south of Ogurja Ada, where speeds reach 22 and 19 cm s−1, respectively. Numerical simulations of the tides using different mean sea levels (within a range of 5 m) indicate that spatial features of the Caspian Sea tides are strongly sensitive to changes in mean sea level.

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