Résumé. - A l'inverse de l'opinion généralement admise, le réchauffement de la surface du sol ne provoque pas l'évaporation et la dissipation dans l'atmosphère de l'eau contenue dans les horizons pédologiques supérieurs. Au contraire, il est la cause de l'amplification des mouvements vers le bas. Le refroidissement déclenche des phénomènes inverses.
Les applications d'une semblable constatation sont multiples, ressortissant aux domaines agronomiques, pédologiques, géologiques, géographiques et à celui des Travaux Publics...
Summary. - Movements of water through the upper horizons of the soil.
It is commonly assumed that the water goes up in the heat of the dry season and vice versa in the cold's, facts linked to the sub surface of the ground.
Actually, as shown by field work, laboratory experiments, the very opposite is true. During the hot season, the warming up of the surface and of the first millimeters of the soil profile starts an increasing of the volume of the air trapped in the chinks of the soil ; such a pressure drives down, more accurately « drives back », the water existing in the A's horizons. In the cold season, the cooling off of the surface allows the ascending movement of the humidity contained in the soil.
The applications of such a fact are quite a few. They belong to the fields of Agronomy, Pedology, Geology, Geography, Engineering...
Résumé. - A l'inverse de l'opinion généralement admise, le réchauffement de la surface du sol ne provoque pas l'évaporation et la dissipation dans l'atmosphère de l'eau contenue dans les horizons pédologiques supérieurs. Au contraire, il est la cause de l'amplification des mouvements vers le bas. Le refroidissement déclenche des phénomènes inverses. Les applications d'une semblable constatation sont multiples, ressortissant aux domaines agronomiques, pédologiques, géologiques, géographiques et à celui des Travaux Publics...Summary. - Movements of water through the upper horizons of the soil. It is commonly assumed that the water goes up in the heat of the dry season and vice versa in the cold's, facts linked to the sub surface of the ground. Actually, as shown by field work, laboratory experiments, the very opposite is true. During the hot season, the warming up of the surface and of the first millimeters of the soil profile starts an increasing of the volume of the air trapped in the chinks of the soil ; such a pressure drives down, more accurately « drives back », the water existing in the A's horizons. In the cold season, the cooling off of the surface allows the ascending movement of the humidity contained in the soil. The applications of such a fact are quite a few. They belong to the fields of Agronomy, Pedology, Geology, Geography, Engineering...