ԱՂԱՋՐԱՅԻՆ ՌԵԺԻՄՆԵՐԻ ԱՌԱՆՁՆԱՀԱՏԿՈՒԹՅՈՒՆՆԵՐԻ ԲԱՑԱՀԱՅՏՈՒՄԸ ԱՐԱՐԱՏՅԱՆ ՀԱՐԹԱՎԱՅՐԻ ՈՌՈԳԵԼԻ ՀՈՂԱՏԱՐԱԾՔՆԵՐՈՒՄ

AgriScience and Technology ◽

10.52276/25792822-2021.1-21 ◽

2021 ◽

pp. 21-25

Author(s):

H. S. Ghazaryan ◽

S. H. Daveyan ◽

D. V. Mejlumyan

Keyword(s):

Species Composition ◽

Soil Fertility ◽

Ground Water ◽

Surface Soil ◽

Water Levels ◽

Salt Accumulation ◽

Irrigation Rate ◽

High Level

According to the conducted research it has been found out that the direction and intensity of water and salt regimes in the irrigated land areas of the Ararat valley are related to the ground water levels, mineralization, crops᾿ species composition and to the irrigation factors. Under conditions of high level of ground water (<1.75 m) some salt accumulation is observed in the mid and surface soil strata, which can lead to the decline of soil fertility and crops productivity. Hence, it is recommended to implement irrigation and leaching activities in spring and autumn seasons along the mentioned land areas increasing the irrigation rate in 1.5 times.

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Characterisation of a windbreak system on the south coast of Western Australia. 3. Soil water and hydrology

Australian Journal of Experimental Agriculture ◽

10.1071/ea02009 ◽

2002 ◽

Vol 42 (6) ◽

pp. 729 ◽

Cited By ~ 11

Author(s):

D. J. M. Hall ◽

R. A. Sudmeyer ◽

C. K. McLernon ◽

R. J. Short

Keyword(s):

Ground Water ◽

Soil Water ◽

Western Australia ◽

Surface Soil ◽

Water Storage ◽

Time Domain Reflectometry ◽

Water Levels ◽

Soil Water Storage ◽

Neutron Moisture ◽

Water Contents

This paper describes changes in soil water and ground water at various distances from a Pinus pinaster windbreak in south-western Australia. Soil water contents were measured by neutron moisture meter and time domain reflectometry at distances from a windbreak ranging from 1 to 20 tree heights (H). Within 3 H of the windbreak, soil water storage was reduced by 100–153 mm/1.8 m when compared to unsheltered conditions (20 H) over the 4 years of the experiment. Beyond 3 H, no significant differences in soil water storage were found which could be related to microclimate modification. Relationships between surface soil water storage (mm/0.4 m) at <6�H and 12–24 H were 1 : 1 regardless of the technique used. Similarly, soil water depletion within the crop rootzone (mm/0.6 m) was similar at distances >3 H. Reductions in the depth and duration of perched water levels occurred within 4 H of the windbreak. Despite this, the windbreaks had no effect on the regional ground-water levels.

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Geographical and hydrological effects of nubian sandstone formations on ground water in Khartoum State – Sudan

International Journal of Hydrology ◽

10.15406/ijh.2020.04.00254 ◽

2020 ◽

Vol 4 (6) ◽

pp. 270-276

Author(s):

Mohammed Ahmed Hag Ali Alzubair

Keyword(s):

Chemical Analysis ◽

Ground Water ◽

Water Levels ◽

Nubian Sandstone ◽

Number Of Layers ◽

Global Standards ◽

Human Use ◽

High Level ◽

Hydrological Effects

The research deals with the geographical and hydrological location of Khartoum state within the scope of the Nubian sandstone extension, and the effects of this on groundwater. To achieve this, 9 samples were analyzed from the wells dug in Omdurman, Khartoum and Bahri to identify the structure and composition of layers and depths of water, in addition to 30 other samples for chemical analysis And the physical of some elements to know the specifications of water and its suitability for human use. The research concluded with a number of results, including that there is a difference in the components of the Nubian sandstone, as its percentage in Omdurman is 67%, the number of layers 10 and Khartoum 71% and the number of layers 16, and in Bahri 82% and the number of layers 21 and thus it is higher than Omdurman and Khartoum. Water levels vary even within the region from one well to another in Omdurman, which is located at depths of 490, 690, and 800 feet, and in Bahri, it is located at depths of 530, 690, and 725 feet, and the hose is located at depths of 340, 505, and 585 feet. Soluble, nitrite and mineral compounds are good according to Global standards for water except for a few of them, with the high level of ammonia in Omdurman and Khartoum higher than 0.1mg/l, which is an indicator of pollution.

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Analisis Likuefaksi Berdasarkan Data CPT Untuk Perancangan Pondasi Di Pesisir Pantai Kabupaten Kulon Progo DIY

Jurnal Rekayasa Sipil (JRS-Unand) ◽

10.25077/jrs.16.2.77-90.2020 ◽

2020 ◽

Vol 16 (2) ◽

pp. 77

Author(s):

Vebrian Anggara ◽

Ferry Fatnanta ◽

Muhamad Yusa

Keyword(s):

Ground Water ◽

Soil Improvement ◽

Water Levels ◽

Water Conditions ◽

Improvement Method ◽

High Level ◽

Site Classes ◽

Very High ◽

Special Region ◽

Liquefaction Analysis

Yogyakarta Special Region (DIY) is an area that has a high level of seismic activity in Indonesia. This is due to various local faults near the land and its location adjacent to the subduction of the Indo-Australian and Eurasian plates. The proposed new airport is located on the coast in Kulon Progo Regency DIY. The location is dominated by the sands layer and it has high ground water levels which indicate the high potential of liquefaction. The site classes of the coast in Kulon Progo Regency is medium category (SD). Liquefaction analysis using the PGAM value of 0.4 g. Liquefaction has the potential to occur in soil layers 0 - 6 meters. The analysis shows for eartquake of ≥ 6.3 Mw has a very high category of liquefaction. The analysis results has LPI ≥ 29.30 for ground water conditions at the surface, and LPI ≥ 15.32 for ground water conditions in depths of 3 meters. Estimated soil settlements of 19.7 cm for magnitude of 8.1 Mw with ground water conditions at the surface. The use of shallow foundations at soil depths of 0-6 meters is not recommended, unless a soil improvement method is used to eliminate the potential for liquefaction.

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