نتایج جستجو برای: groundwater drought

تعداد نتایج: 58751  

2016
William C Hammond Geoffrey Blewitt Corné Kreemer

We introduce Global Positioning System (GPS) Imaging, a new technique for robust estimation of the vertical velocity field of the Earth's surface, and apply it to the Sierra Nevada Mountain range in the western United States. Starting with vertical position time series from Global Positioning System (GPS) stations, we first estimate vertical velocities using the MIDAS robust trend estimator, wh...

Journal: :ARPHA Conference Abstracts 2022

In surface freshwater habitats water level can be strongly variable and benthic invertebrates are usually adapted to cope with hydrological variability. Groundwater more stable, even if in sites at the interface vadose zone, epikarst streams dripping pools hydroperiod may vary. Adaptations survive droughts thus likely have been developed also by groundwater-dwelling animals. However very few st...

Journal: :Natural Hazards and Earth System Sciences 2021

Abstract. Managing water–human systems during water shortages or droughts is key to avoid the overexploitation of resources and, in particular, groundwater. Groundwater a crucial resource as it sustains both environmental and anthropogenic demand. Drought management often guided by drought policies, crisis management, actively introduced strategies. However, impact strategies on hydrological ra...

Journal: :Science of The Total Environment 2021

Abstract Increasing frequency and severity of droughts have motivated natural resource managers to mitigate harmful ecological hydrological effects drought, but drought mitigation is an emerging science evaluating its effectiveness difficult. We examined ecohydrological responses actions aimed at conserving populations the Columbia spotted frog (Rana luteiventris) in a semi-arid valley Nevada, ...

2017
John C. Majsztrik R. Thomas Fernandez Paul R. Fisher Daniel R. Hitchcock John Lea-Cox James S. Owen Lorence R. Oki Sarah A. White

While governments and individuals strive to maintain the availability of high-quality water resources, many factors can "change the landscape" of water availability and quality, including drought, climate change, saltwater intrusion, aquifer depletion, population increases, and policy changes. Specialty crop producers, including nursery and greenhouse container operations, rely heavily on avail...

2008
H. L. Bateman

Abundance and size of toads (Bufo woodhousii and B. cognatus) were related to precipitation, river flow, and groundwater over 7 years along the Middle Rio Grande, a regulated river in the semi-arid southwestern United States. Toads were monitored in riparian areas at 12 sites spanning 140 km of river during summers 2000–2006. Regional precipitation varied between years, with occurrence of both ...

2017
Matthew Rodell Brian D. Wardlow Martha C. Anderson James P. Verdin

11.1 INTRODUCTION Near-surface wetness conditions change rapidly with the weather, which limits their usefulness as drought indicators. Deeper stores of water, including root-zone soil wetness and groundwater, portend longer-term weather trends and climate variations ; thus, they are well suited for quantifying droughts. However, the existing in situ networks for monitoring these variables suff...

Journal: :Hydrology and Earth System Sciences 2022

Abstract. The Millennium Drought lasted more than a decade and is notable for causing persistent shifts in the relationship between rainfall runoff many southeastern Australian catchments. Research to date has successfully characterised where when occurred explored relationships with potential drivers, but convincing physical explanation observed changes catchment behaviour still lacking. Origi...

2014
Osman Orhan Semih Ekercin Filiz Dadaser-Celik

The main purpose of this paper is to investigate multitemporal land surface temperature (LST) changes by using satellite remote sensing data. The study included a real-time field work performed during the overpass of Landsat-5 satellite on 21/08/2011 over Salt Lake, Turkey. Normalized vegetation index (NDVI), vegetation condition index (VCI), and temperature vegetation index (TVX) were used for...

2008
Robert D. Field Samuel S. P. Shen

[1] Drought and sea surface temperature were examined as the causes of severe biomass burning C emissions in Indonesia for 1997–2006, obtained from the Global Fire Emissions Database. Eighteen predictor variables were considered under log linear and piecewise regression models. The predictor variables considered were precipitation totals of up to 6 months, output from two soil moisture models, ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید