RADIOCARBON DATING DYNAMICS OF LANDSLIDES IN THE UPPER REACHES OF THE MZYMTA RIVER BASIN (WESTERN CAUCASUS)

2018 ◽  
pp. 66-72
Author(s):  
Yu. K. Vasil’chuk ◽  
E. S. Slyshkina ◽  
A. V. Bershov
Keyword(s):  
River Basin ◽  
Radiocarbon Dating ◽  
Northern Slope ◽  
Southern Slope ◽  
Western Caucasus ◽  
Ancient Landslide

The article contains materials on the study of landslide deposits in the upper reaches of the Mzymta river basin. The results of14C analysis showed that the youngest landslides are common on the southern slope of the Psekhako Ridge and date back to less than 200 and 390±90, 400±70 years ago BP and more than 770±150 years BP. The most ancient landslide-collapse on the northern slope of the Aibga Ridge and dates back to 1110±90 years BP.

scholarly journals Radiocarbon dating small landslides on the slopes inthe Mzymta river valley

2017 ◽  
pp. 45-48 ◽  
Author(s):  
Yu. K. Vasil’Chuk ◽  
E. S. Slyshkina
Keyword(s):  
Organic Material ◽  
Radiocarbon Dating ◽  
River Valley ◽  
The Body ◽  
Northern Slope ◽  
Southern Slope ◽  
Western Caucasus

The results of the first study, which aims to determine the age of landslides on the southern slope of the Psekhako ridge and northern slope of the Aibga ridge (Western Caucasus) using radiocarbon dating of organic material incorporated into the body of a landslide.

Another Way of Early Pottery Distribution in Eastern Europe? Case Study of the Pezmog 4 Site, European Far Northeast

Radiocarbon ◽  
2014 ◽  
Vol 56 (2) ◽  
pp. 733-741 ◽  
Author(s):  
Victor N Karmanov ◽  
Natalia E Zaretskaya ◽  
Alexander V Volokitin
Keyword(s):  
Eastern Europe ◽  
River Basin ◽  
Radiocarbon Dating ◽  
Early Stage ◽  
River Basins ◽  
Ural Region ◽  
Time Range ◽  
Forest Zone ◽  
Early Pottery

A case study of the Neolithic comb ceramic site Pezmog 4 of the Kama culture presents a situation when results of radiocarbon dating change long-existing concepts concerning the development of archaeological events. Until the early 2000s, the chronology of the Kama culture, distributed mainly in the Kama and Vychegda River basins, has been based on comparative-typological analysis. Estimates of the age of this culture changed from the 3rd millennium BC in the 1950s to the 1st half of the 4th millennium BC by the 1990s. Research concerning the Pezmog 4 site in the central Vychegda River basin in 1999–2002 has abruptly changed this chronological understanding. The data obtained put the age of the early stage of Kama culture within the time range 5750–5620 cal BC and allowed us to propose the existence of another way of early pottery distribution in the forest zone of eastern Europe at the beginning of the 6th millennium BC. This innovation probably penetrated from the trans-Ural region.

Fecundity of the American Plaice, Hippoglossoides platessoides (Fabr.) from Grand Bank and Newfoundland Areas

1964 ◽  
Vol 21 (3) ◽  
pp. 597-612 ◽  
Author(s):  
T. K. Pitt
Keyword(s):  
Egg Production ◽  
Fish Length ◽  
Northern Slope ◽  
Southern Slope ◽  
Ovary Weight ◽  
Length Relationship ◽  
Relationship Of ◽  
Hippoglossoides Platessoides

Fecundity estimates were made on a total of 140 mature American plaice from the southern and northern slopes of the Grand Bank and from St. Mary's Bay. Log–log relationships were established between fecundity and fish length, gutted and gilled weight, age, and ovary weight. No differences were found to exist between the fecundity–length relationship of plaice from the three areas, but there is a suggestion that within areas there may be annual differences in egg production. At comparable ages plaice from the southern slope of the Grand Bank are larger in size and produce more eggs than those from the northern slope and St. Mary's Bay.

scholarly journals Modeling study on the transport of summer dust and anthropogenic aerosols over the Tibetan Plateau

2015 ◽  
Vol 15 (21) ◽  
pp. 12581-12594 ◽  
Author(s):  
Y. Liu ◽  
Y. Sato ◽  
R. Jia ◽  
Y. Xie ◽  
J. Huang ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Radiation Transport ◽  
Eastern China ◽  
Taklimakan Desert ◽  
The Tibetan Plateau ◽  
Northern Slope ◽  
Southern Slope ◽  
Anthropogenic Aerosols ◽  
Anthropogenic Aerosol ◽  
Dust Aerosols

Abstract. The Tibetan Plateau (TP) is located at the juncture of several important natural and anthropogenic aerosol sources. Satellites have observed substantial dust and anthropogenic aerosols in the atmosphere during summer over the TP. These aerosols have distinct effects on the earth's energy balance, microphysical cloud properties, and precipitation rates. To investigate the transport of summer dust and anthropogenic aerosols over the TP, we combined the Spectral Radiation-Transport Model for Aerosol Species (SPRINTARS) with a non-hydrostatic regional model (NHM). The model simulation shows heavily loaded dust aerosols over the northern slope and anthropogenic aerosols over the southern slope and the east of the TP. The dust aerosols are primarily mobilized around the Taklimakan Desert, where a portion of the aerosols are transported eastward due to the northwesterly current; simultaneously, a portion of the particles are transported southward when a second northwesterly current becomes northeasterly because of the topographic blocking of the northern slope of the TP. Because of the strong upward current, dust plumes can extend upward to approximately 7–8 km a.s.l. over the northern slope of the TP. When a dust event occurs, anthropogenic aerosols that entrained into the southwesterly current via the Indian summer monsoon are transported from India to the southern slope of the TP. Simultaneously, a large amount of anthropogenic aerosol is also transported from eastern China to the east of the TP by easterly winds. An investigation on the transport of dust and anthropogenic aerosols over the plateau may provide the basis for determining aerosol impacts on summer monsoons and climate systems.

scholarly journals The upper beech forest line in the Steneto Biosphre Reserve on the northern slopes of the Stara Planina Mts. (Central Bulgaria)

2014 ◽  
Vol 61 (2) ◽  
pp. 273-280
Author(s):  
Stefan Michalik
Keyword(s):  
Sea Level ◽  
Beech Forest ◽  
Northern Slope ◽  
Southern Slope ◽  
Complicated Shape ◽  
Mountain Valley ◽  
Forest Line

The upper beech forest line has a very complicated shape in a mountain valley running in the W-E direction. On the shady northern slope it reaches an average of 1659 m above sea level, while on the insolated southern slope, about 1760 m. It was found and proven statistically that the altitude of the boundary is dependent on the relative isolation (r = 0.309, α = 0.01), exposition and relief of the territory.

scholarly journals Modeling study on the transport of summer dust and anthropogenic aerosols over the Tibetan Plateau

2015 ◽  
Vol 15 (10) ◽  
pp. 15005-15037 ◽  
Author(s):  
Y. Liu ◽  
Y. Sato ◽  
R. Jia ◽  
Y. Xie ◽  
J. Huang ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Radiation Transport ◽  
Model Simulation ◽  
Eastern China ◽  
Taklimakan Desert ◽  
The Tibetan Plateau ◽  
Northern Slope ◽  
Southern Slope ◽  
Anthropogenic Aerosols ◽  
Dust Aerosols

Abstract. The Tibetan Plateau (TP) is located at the juncture of several important natural and anthropogenic aerosol sources. Satellites have observed substantial dust and anthropogenic aerosols in the atmosphere during summer over the TP. These aerosols have distinct effects on the earth's energy balance, microphysical cloud properties, and precipitation rates. To investigate the transport of summer dust and anthropogenic aerosols over the TP, we combined the Spectral Radiation-Transport Model for Aerosol Species (SPRINTARS) with a non-hydrostatic regional model (NHM). The model simulation shows heavily loaded dust aerosols over the northern slope and anthropogenic aerosols over the southern slope and to the east of the TP. The dust aerosols are primarily mobilized around the Taklimakan Desert, where a portion of the aerosols are transported eastward due to the northwesterly current; simultaneously, a portion of the particles are transported northward when a second northwesterly current becomes northeasterly because of the topographic blocking of the northern slope of the TP. Because of the strong upward current, dust plumes can extend upward to approximately 7–8 km a.s.l. over the northern slope of the TP. When a dust event occurs, anthropogenic aerosols that entrain into the southwesterly current via the Indian summer monsoon are transported from India to the southern slope of the TP. Simultaneously, a large amount of anthropogenic aerosols is also transported from eastern China to east of the TP by easterly winds. An investigation on the transport of dust and anthropogenic aerosols over the plateau may provide the basis for determining aerosol impacts on summer monsoons and climate systems.

scholarly journals Morphometry of the relief and debris flow features on the northern slope of the Great Caucasus

2019 ◽  
Vol 487 (4) ◽  
pp. 438-442
Author(s):  
V. A. Karavaev ◽  
S. S. Seminozhenko
Keyword(s):  
Debris Flow ◽  
Debris Flows ◽  
The Other ◽  
Northern Slope ◽  
Western Caucasus ◽  
Average Value ◽  
Key Characteristics ◽  
Flow Features ◽  
The Western Caucasus ◽  
Central Caucasus

The morphometric indicators of the relief significantly affect the debris flow features in the mountains. The key characteristics are the angles of inclination and height, and when considering heights in the first place we pay attention not to their absolute values, but to the nature of the distribution. In the presented study, the analysis of the numerical values of these two indicators for the Western, Central and Eastern Caucasus was carried out on the basis of the original digital model of the relief. The average value of the tilt angles in the Western Caucasus is 0,5° more than in the Central and Eastern, which contributes to more active debris flows. On the other hand, the Western Caucasus is distinguished by smaller elevation differences. From the position of this factor, the Central Caucasus is the most dangerous. Thus, the nature of the distribution of absolute altitudes, along with high forestation, neutralizes the factor of more significant angles of inclination of surfaces and causes less debris flow danger in the Western Caucasus relative to the Central and Eastern.

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