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

Titre : As groundwater depletes, arid American West is moving east

Phys.org/news (FEBRUARY 13, 2020 )

Présentation
Even under modest climate warming scenarios, the continental United States faces a significant loss of groundwater—about 119 million cubic meters, or roughly enough to fill Lake Powell four times or one quarter of Lake Erie, a first-of-its-kind study has shown.

Most global circulation models don’t take into account the lateral movement of water in the subsurface. Typically, they only include limited up-and-down movement, such as rain percolating from vegetation into the soil and roots pulling up water from the ground. In addition, these models tend to limit their scope to mere meters above or below ground.

This new study goes beyond that to simulate how water moves in the subsurface and connects with the land surface

Source  : University of Arizona

Annonce (Phys.org/news)