نتایج جستجو برای: groundwater drought

تعداد نتایج: 58751  

2005
Rakesh Kumar R. D. Singh K. D. Sharma

Water resources of a country constitute one of its vital assets. India receives annual precipitation of about 4000 km. The rainfall in India shows very high spatial and temporal variability and paradox of the situation is that Mousinram near Cherrapunji, which receives the highest rainfall in the world, also suffers from a shortage of water during the non-rainy season, almost every year. The to...

Journal: :Water security in a new world 2023

Abstract Five decades of intensive groundwater exploitation have brought important economic, social and environmental changes in Medina del Campo Groundwater Body (MCGWB). Declining piezometric levels worsened water quality, increased the costs supply abstraction, drained connected wetlands rivers. This chapter presents different methods tools developed to assess impacts effectiveness for adapt...

2015
Chi-Yuen Wang Michael Manga

Many streams and springs, which were dry or nearly dry before the 2014 Mw6.0 South Napa earthquake, started to flow after the earthquake. A United States Geological Survey stream gauge also registered a coseismic increase in discharge. Public interest was heightened by a state of extreme drought in California. Since the new flows were not contaminated by pre-existing surface water, their compos...

Journal: :Ecology 2009
José I Querejeta Louise M Egerton-Warburton Michael F Allen

California coast live oak (Quercus agrifolia) forms tripartite symbiotic associations with arbuscular (AMF) and ectomycorrhizal (EMF) fungi. We selected oak individuals differing in topographic position and depth to groundwater (mesic valley vs. xeric hill sites) to investigate changes of tree mycorrhizal status in response to interannual rainfall variability. EMF root colonization, as well as ...

2016
Cathy B. Kurz-Besson José L. Lousada Maria J. Gaspar Isabel E. Correia Teresa S. David Pedro M. M. Soares Rita M. Cardoso Ana Russo Filipa Varino Catherine Mériaux Ricardo M. Trigo Célia M. Gouveia

Western Iberia has recently shown increasing frequency of drought conditions coupled with heatwave events, leading to exacerbated limiting climatic conditions for plant growth. It is not clear to what extent wood growth and density of agroforestry species have suffered from such changes or recent extreme climate events. To address this question, tree-ring width and density chronologies were bui...

Journal: :Water 2022

Groundwater contribution towards human health and livelihood depends on the contaminants level in groundwater. Many people rural communities are being exposed to waterborne diseases resulting from drinking untreated contaminated This study argues that lack of implementation available groundwater remediation methods associated high costs exposing risks. assessed 22 years quality data 12 borehole...

Journal: :Journal of Hydrometeorology 2021

Abstract We examine the drought variability over conterminous United States (CONUS) for 1915–2018 using Noah-MP land surface model. different model options on reconstruction, including optional representation of groundwater and dynamic vegetation phenology. Over our 104-yr reconstruction period, we identify 12 great droughts that each covered at least 36% CONUS lasted 5 months. The tend to have...

Journal: :Hydrogeology Journal 2023

Abstract Particularly in arid and semiarid areas, more populations rely almost entirely on imported water. However, the extent to which intentional discharge into transiting river systems unintentional leakage may be augmenting water resources for communities along down gradient of transfer scheme has not previously been subject research. The objective this study was assess both potential a lar...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید