The Pleistocene deposits of the area between Coventry, Rugby and Leamington and their bearing upon the topographic development of the Midlands

The sequence of drift deposits in an area between Leamington and Warwick has been established by mapping following an extensive programme of auger drilling. There is a broad differentiation into Older Drift now capping the higher land and Newer Drift forming terraces along the upper Avon and Learn. The Older Drift includes relics of an ancient glaciation correlated with the First Welsh (Berrocian) or Mindel phase, and thick deposits belonging to the Great Eastern and Second Welsh (Catuvelaunian) or Riss episode. Details of the lithology, disposition and fauna of both the Older and Newer Drifts are given. Suggested correlations with neighbouring areas are made. The deposits of the Catuvelaunian episode are shown to be largely of clay or sand laid down in a lake whose extent is traced over a wide area of the Midlands. To it the name ‘Lake Harrison’ has been given. It is shown that it formed in a great pre-glacial valley of very gentle slope which ran from the region of Bredon Hill down towards Leicester, forming part of the Trent system, and which was impounded at each end by Welsh and north-eastern ice respectively. The lake was eventually overridden by the north-eastern ice which went as far south as Moreton-in-the-Marsh. Not until this ice retreated was the Avon river system developed. Associated with this great and very recent change of drainage pattern are others of less importance affecting the Tame and Soar basins.

2020 ◽  
pp. 16-70
Author(s):  
Marijn S. Visscher

The chapter considers the geographical literature of early Seleucid writers. It is argued that the first generation of Seleucid geographers appropriated the eastern regions of the Seleucid Empire with their works, often prioritizing useful political narratives over geographical accuracy. As literature, these works seem inexorably linked to the ambition of the early Seleucid court, especially its desire to assert its dominance over vast and previously unchartered territories. Patrocles, for instance, wrote a description of the coastal regions of the Caspian Sea and the Asian river system, parts of which appear to be pure invention. However, his puzzling claims evoked the image of a world empire stretching as far as the edge of the Ocean, bolstering the prestige of the Seleucids. Another work on the north-eastern regions of the empire, by Demodamas, establishes an image of transcendental rule, an image which he anchors in a specifically Hellenistic view of the succession of empires. Thirdly, Megasthenes used his Indica to convey the idea of imperial domination through knowledge, expressed in a colonial key and backed up by targeted cultural reimaginations and precise measurements. The chapter concludes with a discussion of the challenge to Seleucid geography from Alexandria in the form of Eratosthenes, who overturned the Seleucid knowledge of Asia and India while reflecting a distinctly Ptolemaic view of the world.


2012 ◽  
Vol 12 (9) ◽  
pp. 2907-2922 ◽  
Author(s):  
C. Del Ventisette ◽  
F. Garfagnoli ◽  
A. Ciampalini ◽  
A. Battistini ◽  
G. Gigli ◽  
...  

Abstract. On 1 October 2009, a prolonged and intense rainstorm triggered hundreds of landslides (predominantly debris flows) in an area of about 50 km2 in the north-eastern sector of Sicily (Italy). Debris flows swept the highest parts of many villages and passed over the SS114 state highway and the Messina-Catania railway, causing more than 30 fatalities. This region has a high relief, due to recent uplift. The peculiar geological and geomorphological framework represents one of the most common predisposing causes of rainstorm-triggered debris flows. This paper deals with the geological and hydro-geomorphological studies performed as a part of the post-disaster activities operated in collaboration with Civil Protection Authority, with the aim at examining landslides effects and mechanisms. The data were elaborated into a GIS platform, to evaluate the influence of urbanisation on the drainage pattern, and were correlated with the lithological and structural framework of the area. Our study points at the evaluation of the volume involved, the detection of triggering mechanisms and the precise reconstruction of the influence of urbanisation as fundamental tools for understanding the dynamics of catastrophic landslides. This kind of analysis, including all the desirable approaches for the correct management of debris flow should be the starting point for robust urban planning.


Author(s):  
Alexander Borisovich Zakharov ◽  
Eduard Ivanovich Boznak

The article highlights the ichthyological studies carried out in the Sysola river basin (a second order tributary of the Severnaya Dvina river), where rainbow trout is reared in cages for commercial purposes in the waters of regulated tributaries. The forecast for trout naturalization seems to be poor due to the fact that trout of different ages enter the river system every year as a result of technological accidents. It has been found that, despite the numerous cases of trout occurring in the natural conditions during 40 years, in the basin of the Sysola river has not formed a self-reproducing population of rainbow trout, and cases of its by-catch are rare. The data on the climatic and ecological conditions of the region are given. It has been inferred that the main factors preventing the naturalization of trout in the water bodies of the region are unfavorable temperature and hydrological regimes during the spawning and early ontogenesis of fish. The short summer feeding period does not allow trout to prepare for successful long wintering, as evidenced by a sharp decrease in the growth rate of fish that have fallen into natural conditions, compared to fish grown in cages. Trout of cage origin obviously do not form stable groups capable of reproducing the species and do not pose a threat to the aboriginal fish population, including Atlantic salmon, whose spawning and a significant part of the life cycle take place on many rivers of the north-eastern European Russia, including the basins of the Severnaya Dvina and Pechora rivers


2016 ◽  
Vol 13 (1) ◽  
pp. 3-10 ◽  
Author(s):  
M. Asaduzzaman ◽  
Md. Moshiur Rahman

 Amidst mounting protests both at home and in lower riparian Bangladesh, India is going ahead with the plan to construct its largest and most controversial 1500 mw hydroelectric dam project on the river Barak at Tipaimukh in the Indian state Manipur. In the process, however, little regard is being paid to the short and long-term consequences on the ecosystem, biodiversity or the local people in the river’s watershed and drainage of both upper and low reparian countries. This 390 m length and 162.8 m. high earthen-rock filled dam also has the potential to be one of the most destructive. In India too, people will have to suffer a lot for this mega project. The total area required for construction including submergence area is 30860 ha of which 20797 ha is forest land, 1195 ha is village land, 6160 ha is horticultural land, and 2525 ha is agricultural land. Cconstruction of the massive dam and regulate water flow of the river Barak will have long adverse effects on the river system of Surma and Kushiyara in the north-eastern region of Bangladesh which will obviously have negative impacts on ecology, environment, agriculture, bio-diversity, fisheries, socio-economy of Bangladesh. To assess the loss of Tipaimukh dam on downstream Bangladesh, an Eivironmental Impact Assessment (EIA) has been conducted based on probable affect parametes. Present study intends to depict Tipaimukh dam construction post scenerio in Bangladesh thru assessing probable loss and damage of the Tipaimukh dam construction. The most effective Batelle method of EIA has been applied in this study. It is found -5 scale severity impact will be imposed if the proposed dam is being construct after assessing values of each parameter. Journal of Science Foundation 2015;13(1):3-10DOI: http://dx.doi.org/10.3329/jsf.v13i1.27827


2021 ◽  
Vol 29 (4) ◽  
Author(s):  
Yuliia Babych ◽  
Olena Uvayeva ◽  
Agnessa Stadnychenko

The “western” and “eastern” allospecies of the superspecies complex Planorbarius corneus (Linnaeus, 1758) sensu lato includes the most widespread and abundant gastropods in the Ukrainian aquatic fauna. The range of the “western” allospecies includes the north and central parts of Right Bank Ukraine, while the range of the “eastern” allospecies comprises the north-eastern and eastern parts of Left Bank Ukraine, and the extreme south (as far as the Danube River) of the Ukrainian steppe zone. The food preferences of these snails were established for the first time. Such data may provide the basis for studying the role of both allospecies in the food webs of the river systems of Ukraine.


1942 ◽  
Vol 21 (8) ◽  
pp. 315
Author(s):  
Bowen ◽  
Vickery ◽  
Buchanan ◽  
Swallow ◽  
Perks ◽  
...  

Author(s):  
Sergey B. Kuklev ◽  
Vladimir A. Silkin ◽  
Valeriy K. Chasovnikov ◽  
Andrey G. Zatsepin ◽  
Larisa A. Pautova ◽  
...  

On June 7, 2018, a sub-mesoscale anticyclonic eddy induced by the wind (north-east) was registered on the shelf in the area of the city of Gelendzhik. With the help of field multidisciplinary expedition ship surveys, it was shown that this eddy exists in the layer above the seasonal thermocline. At the periphery of the eddy weak variability of hydrochemical parameters and quantitative indicators of phytoplankton were recorded. The result of the formation of such eddy structure was a shift in the structure of phytoplankton – the annual observed coccolithophores bloom was not registered.


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