Preliminary study of the water-temperature regime of the North Santiam River downstream from Detroit and Big Cliff dams, Oregon

1985 ◽  
Keyword(s):  
Water Temperature ◽  
Temperature Regime ◽  
The North ◽  
Preliminary Study

CHANGES IN TEMPERATURE REGIME AND PRECIPITATION REGIME OF WARM AND COLD PERIODS IN VARIOUS CLIMATIC ZONES OF THE NORTH CAUCASUS REGION

2021 ◽  
pp. 55-72
Author(s):  
Boris Azretaliyevich Ashabokov ◽  
Lyudmila Mikhailovna Fedchenko ◽  
Lara Asirovna Kesheva ◽  
Nanaliya Vyacheslavovna Teunova
Keyword(s):  
Temperature Regime ◽  
North Caucasus ◽  
Precipitation Regime ◽  
Climatic Zones ◽  
Caucasus Region ◽  
The North

scholarly journals Influence of beech forests fragmentation of Stilsky Hillside on their microclimatic parameters

2020 ◽  
pp. 81-88
Author(s):  
Oleg Оrlov ◽  
Maryna Ragulina
Keyword(s):  
Water Temperature ◽  
Edge Effect ◽  
Temperature Regime ◽  
Biodiversity Loss ◽  
Beech Forests ◽  
Small Areas ◽  
Regime Changes ◽  
Interior Forest ◽  
Floristic Structure ◽  
Sensitive Marker

Estimation of changes in the microclimatic parameters of beech forests of the Stilsky Hillside, by measuring the water-temperature indicators of the soil regime and bryoindication, were performed. Fragmentation of forest causes significant changes in microclimatic parameters in bondary habitats areas, which leads to both biodiversity loss and a decrease of the unchanged forest areas. In fragmented beech forests, the influence of the edge effect on the water-temperature regime of soils is observed within a distance of 20-40 meters, but the eco-floristic structure of nemoral moss vegetation is stabilized only at a distance from 160 m. Thus, bryobiontes are a shown to be a sensitive marker of the microclimatic regime changes in a fragmented ecosystem. In the studied beeches Metzgeria furcata, Radula complanata, Anomodon attenuatus, A. viticulosus, Cirriphyllum crassinervium are indicators of the "interior forest". The determined amplitude of the edge effect indicates the fragmentation as a crucial factor on the small areas of forest and its role in the loss of climate-sensitive groups of biota, primarily mosses.

scholarly journals A Preliminary Study on The Prevention and Control of Seawater Intrusion in Northern Pingtan Island with Freshwater Recharge Curtain

2020 ◽  
Vol 199 ◽  
pp. 00012
Author(s):  
Mengyao Diao ◽  
Panlin Li ◽  
Weifang Ruan ◽  
Wanglin Li
Keyword(s):  
Seawater Intrusion ◽  
Effective Means ◽  
Northern Coast ◽  
Economic Activities ◽  
Intrusion Prevention ◽  
The North ◽  
Pingtan Island ◽  
Preliminary Study ◽  
Over Exploitation ◽  
And Control

Seawater intrusion caused by groundwater over-exploitation is a kind of geological disaster caused by human economic activities and natural environment changes. Using freshwater recharge curtain technology is an effective means to prevent seawater intrusion. Based on the analysis of the characteristics of seawater intrusion in Pingtan island, Fujian Province, and in view of the possible seawater intrusion problems in the construction of Luyangpu underground reservoir in Pingtan Island, this paper expounds the basic principle of seawater intrusion prevention with freshwater recharge curtain , the technical measures of installing a row of recharge wells in the northern coastal zone of Luyangpu plain in Pingtan Island and using freshwater recharge curtain are put forward to prevent seawater intrusion. Through groundwater numerical simulation, the dynamic distribution of groundwater level in the north of Pingtan Island in the next 20 years is analyzed and predicted. The results show that the seawater intrusion can be effectively prevented by installing freshwater curtain recharge wells in the northern coast of Luyangpu.

The Roman and Byzantine Defences of Lepcis Magna

1953 ◽  
Vol 21 ◽  
pp. 42-73 ◽  
Author(s):  
R. G. Goodchild ◽  
J. B. Ward Perkins
Keyword(s):  
Large Scale ◽  
North African ◽  
The North ◽  
Ground Survey ◽  
Ancient City ◽  
Preliminary Study ◽  
Epigraphic Evidence ◽  
The City

During the North African campaigns of 1941–3 numerous air-photographs of the Tripolitanian coast were taken by the R.A.F. for operational purposes, and the site of Lepcis Magna was included in the area covered. Examination of these photographs (pl. XV) showed many suggestive features relating to the defences of the ancient city, and a preliminary ground survey was later (1947–50) undertaken to establish, with a minimum of excavation, the course of the successive wall-circuits.The results of this investigation are described below, and are discussed in relation to the historical and epigraphic evidence. It is not claimed that these results are exhaustive, or that they will not need modification in the light of future discoveries. Since, however, there is little likelihood of any early resumption of large-scale excavations at Lepcis, this preliminary study may help to illustrate the growth and subsequent decline of the city that came to be the most important centre between Carthage and Alexandria.

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