Variations in the Kara Sea Level, Their Steric Factors, and Solar Radiation during 1993–2018

2021 ◽  
Vol 46 (8) ◽  
pp. 519-529
Author(s):  
A. V. Kholoptsev ◽  
S. A. Podporin ◽  
V. A. Safonov
Keyword(s):  
Solar Radiation ◽  
Sea Level ◽  
Kara Sea ◽  
Steric Factors

VARIATIONS IN THE KARA SEA LEVEL, THEIR STERIC FACTORS, AND SOLAR RADIATION DURING 1993-2018

2021 ◽  
pp. 38-52
Author(s):  
A.V. KHOLOPTSEV ◽  
◽  
S.A. PODPORIN ◽  
V.A. SAFONOV ◽  
◽  
...  
Keyword(s):  
Solar Radiation ◽  
Sea Level ◽  
Water Layer ◽  
Kara Sea ◽  
Mean Values ◽  
Mean Intensity ◽  
Steric Factors ◽  
The Mean ◽  
Long Term Variations

The GLORYS12v.1 and ERA5 reanalyses for different months are used to study a relationship between long-term variations in the monthly mean values of sea level in different areas of the Kara Sea and their steric factors during 1993-2018. The areas of the sea were identified where the relationships between these changes and variations in the mean temperature and salinity of the upper quasihomogeneous water layer, as well as the variations in the monthly mean intensity of their insolation, are statistically significant.

The impact of glaciation, river-discharge and sea-level change on Late Quaternary environments in the southwestern Kara Sea

2000 ◽  
Vol 89 (3) ◽  
pp. 550-562 ◽  
Author(s):  
Leonid Polyak ◽  
Mikhail Levitan ◽  
Valery Gataullin ◽  
Tatiana Khusid ◽  
Valery Mikhailov ◽  
...  
Keyword(s):  
Sea Level ◽  
River Discharge ◽  
Late Quaternary ◽  
Sea Level Change ◽  
Kara Sea ◽  
Level Change ◽  
The Impact ◽  
And Sea Level

scholarly journals ACCUMULATION BEHAVIOUR OF ALLANTOIN IN THE UNDERGROUND PHYTOMASS OF THE BORAGINACEAE FAMILY AND ITS ROLE IN ADAPTING THE PLANTS TO ADVERSE ENVIRONMENTAL FACTORS

2019 ◽  
Vol 14 (1) ◽  
pp. 126-136
Author(s):  
A. Ya. Tamakhina ◽  
A. A. Akhkubekova ◽  
A. B. Ittiev
Keyword(s):  
Solar Radiation ◽  
Sea Level ◽  
Low Temperatures ◽  
High Performance ◽  
Growing Season ◽  
Stress Factors ◽  
Adaptation To Stress ◽  
Plant Adaptation ◽  
The Family

Aim.The aim of the work described herein was to study the dynamics of allantoin accumulation in the underground phytomass ofEchium vulgareL.,Symphytum caucasicumM. Bieb. andS. asperumLepech. as well as to clarify the role of allantoin in plant adaptation to stress factors.Methods.We studied the roots of plants growing in the foothill (Nalchik, 490–512 m above sea level) and the mountain zones of the Kabardino-Balkarian Republic (Terskol village, 2530 m above sea level; Verkhnyaya Balkaria village, 2680 m above sea level). The roots were collected at the stages of rosetting, flowering, fruiting and at the end of the growing season. Aqueous-alcoholic extracts of shredded roots were analyzed by high-performance liquid chromatography.Results.The highest content of allantoin in the roots ofEchium vulgare,Symphytum caucasicum,S. asperumplants was noted at the end of the growing season, respectively 0.915; 0.342–0.658; 2,842–3,426%. Under conditions of low temperatures and increased solar radiation, the content of allantoin in the roots increases 1.2–1.9 times as compared with the plants of the foothill zone.Conclusion.Allantoin plays an important role in the process of adapting species of the family Boraginaceae to oxidative stress caused by hypothermia and increased solar radiation.

Time-series analysis of tides and similar motions of the sea surface

1967 ◽  
Vol 4 (1) ◽  
pp. 103-112 ◽  
Author(s):  
D. E. Cartwright
Keyword(s):  
Time Series ◽  
Solar Radiation ◽  
Time Series Analysis ◽  
Sea Level ◽  
Sea Surface ◽  
Survey Article ◽  
Series Analysis ◽  
Non Linear ◽  
Exciting Forces ◽  
Linear Effects

This survey article, most of whose results are described in greater detail in Munk and Cartwright (1966), which will hereafter be abbreviated to MC, describes methods which aim to separate the response of the sea level at a given place due to various exciting forces such as gravity, solar radiation, non-linear effects, and weather. In so doing, it provides predictors for sea level which are formally simpler and somewhat more accurate than those given by the classical methods.

scholarly journals The Current State and 125 Kyr History of Permafrost in the Kara Sea Shelf: Modeling Constraints

2019 ◽  
Author(s):  
Anatoliy Gavrilov ◽  
Vladimir Pavlov ◽  
Alexandr Fridenberg ◽  
Mikhail Boldyrev ◽  
Vanda Khilimonyuk ◽  
...  
Keyword(s):  
Sea Level ◽  
Field Data ◽  
Ice Sheets ◽  
Forward Modeling ◽  
Kara Sea ◽  
Geological History ◽  
Freezing And Thawing ◽  
The Past ◽  
Current State ◽  
History Of

Abstract. The evolution of permafrost in the Kara shelf is reconstructed for the past 125 kyr. The work includes zoning of the shelf according to geological history, compiling sea-level and ground temperature scenarios within the distinguished zones, and forward modeling to evaluate the thickness of permafrost and the extent of frozen, cold and unfrozen rocks. The modeling results are correlated to the available field data and are presented as geocryological maps. The formation of frozen, cold, and unfrozen rocks of the region is inferred to depend on the spread of ice sheets, sea level, and duration of shelf freezing and thawing periods.

scholarly journals The tides in the south-western Kara sea. Tides calibration method effects

2017 ◽  
pp. 98-115
Author(s):  
G. N. Voinov ◽  
A. K. Naumov
Keyword(s):  
Sea Level ◽  
Least Square Method ◽  
Calibration Method ◽  
Kara Sea ◽  
Least Square ◽  
The South ◽  
Quality Estimation ◽  
Annual Series ◽  
Method Effects ◽  
Statistical Estimations

The estimates of the tides harmonic constants are given over the period from 1962 to 1993. They were received using a least square method according to AARI. Quality estimation of the sea level observations was performed. The annual series with bad observations were transformed by means of tides calibration. The Estimation of the tides fi ne structure – harmonics of the second and third degree of the potential according to analysis over the period from 1962–1985 was received. The statistical estimations of the sea level in the separate typical years were calculated using initial and corrected series.

scholarly journals A Probabilistic Model of Coastal Bluff-Top Erosion in High Latitudes Due to Thermoabrasion: A Case Study from Baydaratskaya Bay in the Kara Sea

2020 ◽  
Vol 8 (3) ◽  
pp. 169
Author(s):  
Mohammad Akhsanul Islam ◽  
Raed Lubbad ◽  
Mohammad Saud Afzal
Keyword(s):  
Sea Level ◽  
Probabilistic Model ◽  
Coastal Erosion ◽  
Global Climate ◽  
High Sensitivity ◽  
Kara Sea ◽  
The Arctic ◽  
Field Observations ◽  
Sea Level Changes ◽  
Erosion Mechanisms

Arctic coastal erosion demands more attention as the global climate continues to change. Unlike those along low-latitude and mid-latitude, sediments along Arctic coastlines are often frozen, even during summer. Thermal and mechanical factors must be considered together when analysing Arctic coastal erosion. Two major erosion mechanisms in the Arctic have been identified: thermodenudation and thermoabrasion. Field observations of Arctic coastal erosion are available in Baydaratskaya Bay in the Kara Sea. The objective of this study is to develop a probabilistic model of thermoabrasion to simulate the measured coastal erosion at two sites where observations suggest thermoabrasion is dominant. The model simulates two time periods: (a) the summer of 2013 (2012–2013) and (b) the summer of 2017 (2016–2017). A probabilistic analysis is performed to quantify the uncertainties in the model results. The input parameters are assumed to follow normal and lognormal distributions with a 10% coefficient of variation. Monte Carlo simulation is applied to determine the erosion rates for the two different cases. The simulation results agree reasonably well with the field observations. In addition, a sensitivity analysis is performed, revealing a very high sensitivity of the model to sea-level changes. The model indicates that the relation between sea-level rise and thermoabrasional erosion is exponential.

scholarly journals Life Histories of Two Endangered Sea SkatersHalobates matsumuraiEsaki andAsclepios shiranui(Esaki) (Hemiptera: Gerridae: Halobatinae)

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Terumi Ikawa ◽  
Yuichi Nozoe ◽  
Natsuko Yamashita ◽  
Namiko Nishimura ◽  
Satoshi Ohnoki ◽  
...  
Keyword(s):  
Solar Radiation ◽  
Sea Level ◽  
Marine Environment ◽  
Life Histories ◽  
Adaptive Strategies ◽  
Wave Action ◽  
North Coast ◽  
The Past ◽  
The North ◽  
The Government

Sea skatersHalobates matsumuraiEsaki andAsclepios shiranui(Esaki) are among the few marine insects found in Japan. For the past several decades, they have become rare in most localities and have now been designated as endangered by the government. In order to understand their adaptive strategies to the marine environment and to develop conservation measures, it is essential to know their life histories. We studied their lifecycles in Kujukushima Bay off the north coast of Kyushu (Japan) where they co-occurred in small coves along the jagged coast. They appeared to have more than one generation a year and to overwinter in the egg stage. Eggs ofH. matsumuraiwere laid on natural sandstones and man-made sandstone walls along the shore, mostly above the average sea level. The eggs had very hard shells, presumably adaptive to protect them from desiccation, solar radiation, and wave action, especially during the overwintering period.

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