نتایج جستجو برای: spatial and temporal patterns of salinity intrusion

تعداد نتایج: 24101309  

Journal: :iranian journal of fisheries science 0
s.gh. ghorbanzadeh zaferani a. machinchian moradi r. mousavi nadushan a.r. sari s.m.r. fatemi

we quantified the distribution, abundance and assemblage structure of macrofauna at 22 stations in gorgan bay, seasonally in 2012-2013. also, depth, temperature, salinity, do, tom and sediment particle size were measured in each station. the highest concentration of tom was measured near the western littoral zone (10.22) while the mouth part and north-eastern area was characterized by the lowes...

ژورنال: فیزیک زمین و فضا 2020

The global warming phenomenon has had a great impact not only on the temperature patterns of the regions, but also on the spatial-temporal patterns of the occurrence of wet and dry days. As some areas have increased (decreased) the number of dry days, the result of these changes requires new approaches to water management in these areas. Golestan province in northern Iran is one of the province...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی - دانشکده ادبیات و زبانهای خارجی 1391

although there are studies on pragmatic assessment, to date, literature has been almost silent about native and non-native english raters’ criteria for the assessment of efl learners’ pragmatic performance. focusing on this topic, this study pursued four purposes. the first one was to find criteria for rating the speech acts of apology and refusal in l2 by native and non-native english teachers...

Journal: :Remote Sensing 2021

Soil salt-water dynamics in the Yangtze River Estuary (YRE) is complex and soil salinity an obstacle to regional agricultural production ecological environment YRE. Runoff into sea reduced during impoundment period as result of water-storing process Three Gorges Reservoir (TGR) upper reaches River, which causes serious seawater intrusion. a problem due shallow saline groundwater under intrusion...

2014
Zhuoran Wang Gengxing Zhao Mingxiu Gao Chunyan Chang Jichao Jia Jin Li Z. R. Wang

As an important area of reserve land resources, the Yellow River Delta is faced with the problem of soil salinization. Grasping the characteristics of soil salinity as well as its spatial variation patterns is an important foundation of prevention, control and utilization of saline soil. This study selected Kenli County of the Yellow River Delta, obtained soil salinity data through field survey...

ژورنال: علوم آب و خاک 1999
محمدی, جهانگرد ,

This study addresses the methodology of studying spatial variability of soil salinity. The information used is based on a semi-detailed soil survey, followed by a free survey, conducted in Ramhormoz, Khuzestan. The study of soil salinity variations was carried out using about 600 sampling points with an average distance of 500 m, at three depths of 0-50, 50-100, and 100-150 cm. To determine the...

Journal: :محیط شناسی 0
محسن رضائی استادیار زمین شناسی با گرایش آب شناسی، و مدیر گروه زمین شناسی دانشگاه تربیت معلم تهران

in this research, controlling factors affecting salinity of groundwater in mond aquifer, bushehr province, was studied. electrical conductivity of water supply wells is varied between 1727 to more than 6000µs. negative water balance is governed to aquifer because of two separate water exploitation zones. lithology of surrounding formations, salt dome, saltwater intrusion and return flow of irri...

Background: The aim of the study was to assess the effect of an 8-week balance exercise program for enhancement of gait function on temporal and spatial parameters of school aged children with intellectual disabilities. Method: Forty young people with intellectual disabilities were assigned either to the balance exercise program for enhancement of gait function group (BG group, n=19) or the ...

 Cycling is a phenomenon in urban transportation that has the ability to allocate a specific location at any moment in time. Accordingly, spatial analysis of bicycle trips can be accompanied by temporal analysis. The use of a GIS environment is commonly recommended to display the extent of the phenomenon's spatial changes. However, in order to apply and display changes over time, it will requir...

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