搜索结果: 1-15 共查到“水文学 state”相关记录24条 . 查询时间(0.296 秒)
Mississippi Delta marshes in a state of irreversible collapse, study shows（图）
Mississippi Delta marshes state irreversible collapse
2020/6/5
Given the present-day rate of global sea level rise, remaining marshes in the Mississippi Delta are likely to drown, according to a new Tulane University study.
A key finding of the Na...
Groundwater Recharge in Panjab State (India) Using Tritium Tracer
Groundwater Recharge Panjab State Tritium Tracer
2009/10/29
Vertical recharge to groundwater due to the 1972 monsoon plus supplemental
irrigation has been measured at 21 sites in the state of Panjab(1ndia) using tritigm
tracer. Average recharge is found to b...
Measurement of Vertical Recharge to Groundwater in Haryana State(India) Using Tritium Tracer
Vertical Recharge Haryana State Tritium Tracer
2009/10/29
Downward movement of soil moisture due to rainfall and supplemental irrigation
in the unsaturated zonf has been followed by tagging a layer of soil with tritiated
water at a number of sites in the s...
A state model for infiltration based on a spatial discretization of partial
differential equations of vertical water movement in unsaturated homogeneous
soil is presented. A transformation of the sp...
Determination of Steady State Drawdowns in a Horizontal Double Aquifer System
Steady State Drawdowns Horizontal Double Aquifer System
2009/10/27
Using Ditkin's operator the exact analytical expressions for drawdowns for
coupled two finite aquifer system in which pumpage from the upper and lower
aquifer is balanced by a reduction in evapotran...
Storage Coefficient Determination from Quasi-Steady State Flow
Storage Coefficient Determination Quasi-Steady State Flow
2009/10/27
A method has been proposed for determining a unique storage coefficient
value for confined and unconfined aquifers tapped by a large diameter well.
The prerequisites for the application of this meth...
A Graphical Method for Storage Coefficient Determination from Quasi-Steady State Flow Data
Graphical Method Storage Coefficient Determination Quasi-Steady State Flow Data
2009/10/23
A simple, approximate but practical graphical method is proposed for estimating
the storage coefficient independently from the transmissivity value, provided
that quasi-steady state flow data are av...
Precipitation Estimates over the Baltic Sea:Present State of the Art
Precipitation Estimates Baltic Sea Present State
2009/10/22
Precipitation is one of the main components in the water balance, and probably the component determined with the greatest uncertainties. In the present paper we focus on precipitation (mainly rain) ov...
BACTERIOLOGICAL PROPERTIES OF GROUNDWATER IN PARTS OF NIGER STATE, NIGERIA
GROUNDWATER NIGER STATE BACTERIOLOGICAL
2009/10/19
Bacteriological analysis of groundwater from newly drilled boreholes in hospital environments in towns and villages in central Nigeria, has revealed that groundwater can be contaminated by microorgani...
GROUNDWATER QUALITY IN KHARTOUM STATE, SUDAN
Chemical analyses KHARTOUM STATE GROUNDWATER QUALITY
2009/10/13
Chemical analyses have been carried out for several groundwater samples collected from 28 producing wells in the area east of the Nile and the Blue Nile rivers, Khartoum State, Sudan. Three hydrogeoch...
HYDRO-GEOELECTRICAL STUDY IN THE NORTHEASTERN PART OF ADAMAWA STATE, NIGERIA
Nineteen vertical electrical soundings electrode separation HYDRO-GEOELECTRICAL
2009/10/12
Nineteen vertical electrical soundings (VES) with a maximum current electrode separation of (AB/2) 215 meters were carried out in the northeastern part of the Michika area of Adamawa State, Nigeria. E...
Present state of study on subsurface temperature and contribution of hydrology on it
subsurface temperature groundwater flow ground surface temperature (GST) reconstruction of climate change geothermal heat pump system
2009/7/14
Subsurface thermal regime is affected not only by thermal conduction but also by advection owing to groundwater flow. The effect of thermal advection is especially large in shallow sedimentary layer w...
Comparison between field measurements and numerical simulation of steady-state solute transport in a heterogeneous soil profile
field measurements solute transport numerical simulation soil profile
2009/6/8
Field-scale solute dispersion is determined by water flow heterogeneity which results from spatial variability of soil hydraulic properties and soil moisture state. Measured variabilities of soil hyd...
Rainfall and throughfall chemistry in the Atlantic Forest：a comparison between urban and natural areas (São Paulo State, Brazil)
Rainfall Atlantic Forest natural areas urban
2009/5/18
Two areas in the Atlantic Forest (São Paulo State, Brazil), with contrasting environments in respect of human occupation, were monitored from 1999 to 2001. One area named PEFI (23°38'08''-23°40...
Using a spatio-temporal dynamic state-space model with the EM algorithm to patch gaps in daily riverflow series
patch gaps daily riverflow series
2009/5/18
A spatio-temporal linear dynamic model has been developed for patching short gaps in daily river runoff series. The model was cast in a state-space form in which the state variable was estimated using...