Predicting groundwater recharge in Ghana by estimating evapotranspiration

被引：11

作者：

Anayah, Fathi M. ^{[1
]}

Kaluarachchi, Jagath J. ^{[1
]}

Pavelic, Paul ^{[2
]}

Smakhtin, Vladimir ^{[3
]}

机构：

[1] Utah State Univ, Coll Engn, Logan, UT 84322 USA

[2] Int Water Management Inst, Viangchan, Laos

[3] Int Water Management Inst, Colombo, Sri Lanka

来源：

WATER INTERNATIONAL | 2013年 / 38卷 / 04期

关键词：

evapotranspiration; complementary methods; groundwater recharge; Volta Basin; Ghana; EVAPORATION; WATER; RAINFALL; CLIMATE; BASIN;

D O I：

10.1080/02508060.2013.821642

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This study uses a modified Granger and Gray model to estimate evapotranspiration and then groundwater recharge in Ghana. The overall results show that the model is capable of reliably predicting regional evapotranspiration using a small number of monitoring stations with meteorological data only. This information allows the estimation of groundwater recharge via the water balance equation. The results indicate that the aquifer system is sufficiently recharged, especially in northern Ghana, where dry conditions prevail, to allow the development of groundwater resources to satisfy increasing water demands.

引用

页码：408 / 432

页数：25