Informations et ressources scientifiques
sur le développement des zones arides et semi-arides

Accueil du site → Brèves → Brèves 2021 → A cost effective and quick way to find groundwater in arid regions

A cost effective and quick way to find groundwater in arid regions

ScienceDaily (October 26, 2021)

Titre : A cost effective and quick way to find groundwater in arid regions

Water is a scarce commodity in many countries worldwide, but new cost-effective technology pioneered by researchers in Australia, Egypt and Saudi Arabia could ensure sustainable water supplies for decades to come.

ScienceDaily (October 26, 2021)

Présentation
Using satellite imagery, geospatial techniques and adding information on drainage, rock types, fractures, topography and rainfall, Dr Ahmed has mapped the Hawker region in the Flinders Ranges into three distinct classifications for groundwater stored in fractured rock aquifers : good, moderate and low.
His study indicates that the most effective groundwater recharge zones (where surface water collects as it moves downwards) are located where there are numerous rock fractures, low drainage and a gentle slope.
Conversely, the least effective areas to find groundwater are underlain by shale and siltstone. Existing methods to assess groundwater sources involve extensive drilling, which is expensive, time consuming and often inaccurate.
Using a combination of remote sensing, GIS and information and other geological factors, hydrologists should be able to find precise groundwater locations at a fraction of the cost, he says.

Story Source  : University of South Australia

Annonce (ScienceDaily)

Page publiée le 18 janvier 2023