نتایج جستجو برای: groundwater decline

تعداد نتایج: 118576  

2009
Y. Jia H. Wang

A distributed model for simulating the land surface hydrological processes in the Heihe river basin was developed and validated on the basis of considering the physical mechanism of hydrological cycle and the artificial system of water utilization in the basin. Modeling approach of every component process was introduced from 2 aspects, i.e., water cycle and energy cycle. The hydrological proces...

Journal: :IOP conference series 2021

Abstract This study used GMS-Modflow to investigate the ten-year groundwater potential in Concepcion, Tarlac. region Central Luzon, Philippines, with limited surface water, depends on as its primary freshwater source. The water demand projection estimated an increase of 38.5% from 2020 2030; hence, higher abstraction is perceived next ten years. To deviate risk associated reliance groundwater, ...

Journal: :American journal of epidemiology 2004
Pamela A Shaw Ruth Etzioni Steven B Zeliadt Angela Mariotto Kent Karnofski David F Penson Noel S Weiss Eric J Feuer

Ecologic studies of cancer screening examine cancer mortality rates in relation to use of population screening. These studies can be confounded by treatment patterns or influenced by choice of outcome and time horizon. Interpretation can be complicated by uncertainty about when mortality differences might be expected. The authors examined these issues in an ecologic analysis of prostate-specifi...

Journal: :Population studies 2015
Kimberly Singer Babiarz Karen Eggleston Grant Miller Qiong Zhang

Between 1950 and 1980, China experienced the most rapid sustained increase in life expectancy of any population in documented global history. We know of no study that has quantitatively assessed the relative importance of the various explanations proposed for this gain in survival. We have created and analysed a new, province-level panel data set spanning the decades between 1950 and 1980 by co...

ژورنال: علوم آب و خاک 2019

In recent years, with the excessive use of underground water resources in the Malayer Plain, the water level has dropped sharply and underground water resources, which serve as the main source of water supply for the agricultural sector and drinking, the city is facing a serious risk. Because of the relevance of each of the fields with other agricultural fields around, this study was done to sh...

Journal: :IOP conference series 2023

Abstract Groundwater basins in Bandung city are included the category of vulnerable areas to damage. It is interpreted that area has damaged groundwater conditions. Geological conditions and soil its surroundings consist alluvial layers eruption Mount Tangkuban Perahu. The type material north generally a andosol. In south east consists distribution species with clay deposits andosol types scatt...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بیرجند - دانشکده کشاورزی 1390

آب های زیرزمینی همواره به عنوان یکی از منابع مهم و عمده تامین آب شرب و کشاورزی به ویژه در مناطق خشک و نیمه خشک مطرح بوده است. دشت بیرجند نیز با قرار گرفتن در منطقه خشک، استفاده از آب-های زیرزمینی را به عنوان مهمترین و در عین حال تنها منبع تولید آب شیرین در پیش رو دارد. در همین زمینه پیش بینی نوسانات سطح آب زیرزمینی می تواند کمک شایانی به برنامه ریزی و تصمیم گیری های بعدی جهت تامین درازمدت آب شر...

Journal: :Hydrogeology Journal 2023

Abstract In the Rafsanjan plain, Iran, excessive use of groundwater for pistachio irrigation since 1960s has led to a severe water level decline as well land subsidence. this study, advantages InSAR analyses and flow modeling are combined improve understanding subsurface processes causing groundwater-related subsidence in several areas region. For purpose, calibration scheme numerical model was...

Journal: :Water 2022

The Yaoba Oasis is an irrigated cropland entirely dependent on groundwater; previous investigations (1980–2015) revealed over-abstraction of groundwater and deteriorating quality. For further exploring the hydrodynamic behaviors geochemical processes during irrigation season, samples were collected analyzed using different techniques including classical statistics, correlation analysis, Piper d...

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