نتایج جستجو برای: groundwater inventories

تعداد نتایج: 34108  

Journal: :Journal of Monetary Economics 2022

• We show in a structural VAR that TFP news shocks generate positive comovement of all macroeconomic aggregates and especially inventories. Standard shock models with inventories cannot explain this fact due to the strength intertemporal substitution channel. derive conditions required procyclical inventory response by using wedges approach. suggest develop framework knowledge capital these fin...

2011
Guey-Shin Shyu Bai-You Cheng Chi-Ting Chiang Pei-Hsuan Yao Tsun-Kuo Chang

In Taiwan many factors, whether geological parent materials, human activities, and climate change, can affect the groundwater quality and its stability. This work combines factor analysis and kriging with information entropy theory to interpret the stability of groundwater quality variation in Taiwan between 2005 and 2007. Groundwater quality demonstrated apparent differences between the northe...

Journal: :J. Geographic Information System 2010
Natarajan Venkat Kumar Samson Mathew Ganapathiram Swaminathan

The present study aims to develop a new hybrid Fuzzy Simulink model to assess the groundwater quality levels in Tiruchirappalli city, South India. Water quality management is an important issue in the modern times. The data collected for Tiruchirappalli city have been utilized to develop the approach. This is illustrated with seventy nine groundwater samples collected from Tiruchirappalli city ...

2011
Dong Liu Miao Yu Nan Sun Ying Qi

Dong Liu, Miao Yu, Nan Sun, Ying Qi (School of Water Conservancy & Civil Engineering,Northeast Agricultural University, Harbin Heilongjiang 150030,China) Abstract:In the course of analyzing and forecasting regional groundwater depth, its variation process complexity was ignored in the past, so that it was difficult to realize scientific management of groundwater resources. Aiming at the aforesa...

2011
Neil K. Ganju

[1] Coastal groundwater discharge is an important source of freshwater and nutrients to coastal and estuarine systems. Directly quantifying the spatially integrated discharge of fresh groundwater over a coastline is difficult due to spatial variability and limited observational methods. In this study, I applied a novel approach to estimate net freshwater discharge from a groundwater‐fed tidal c...

2014
Shaogang Dong Baiwei Liu Huamin Liu Shidong Wang Lixin Wang

In the rubber dam's impact area, the groundwater total hardness (TH) has declined since 2000, ultimately dropping to 100-300 mg/L in 2012. pH levels have shown no obvious changes. NH4-N concentration in the groundwater remained stable from 2000 to 2006, but it increased from 2007 to 2012, with the largest increase up to 0.2 mg/L. NO3-N concentration in the groundwater generally declined in 2000...

2016
Bo Liu Xiangqian Zhou Wei Li Chengpeng Lu Longcang Shu Athanasios Loukas

In this study, the temporal and spatial variations of groundwater drought using a Standardized Groundwater Level Index (SGI) were analyzed based on 40 monthly groundwater level observation wells from 1989 to 2012 in Jiangsu Province, China. Meteorological drought, calculated by the Standardized Precipitation Index (SPI), was also included to reveal its propagation and impact on the groundwater ...

2018
Qingguo Zhou Chong Chen Gaofeng Zhang Huaming Chen Dan Chen Yingnan Yan Jun Shen Rui Zhou

Groundwater plays a vital role in the arid inland river basins, in which the groundwater management is critical to the sustainable development of area economy and ecology. Traditional sustainable management approaches are to analyze different scenarios subject to assumptions or to construct simulation–optimization models to obtain optimal strategy. However, groundwater system is time-varying du...

2006
J. Götzinger

In the project RIVERTWIN climate, hydrologic, groundwater and water quality models are integrated in order to evaluate river basin management plans established for the implementation of the EU Water Framework Directive. In such integrated models, which try to simulate all relevant processes in a river basin realistically, modelling of the water balance plays a key role. Therefore the integratio...

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