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Accueil du site → Doctorat → États-Unis → 1981 → SAND ENCROACHMENT BY WIND IN AL-HASA OF SAUDI ARABIA

INDIANA UNIVERSITY BLOOMINGTON (1981)

SAND ENCROACHMENT BY WIND IN AL-HASA OF SAUDI ARABIA

ABOLKHAIR, YAHYA MOHAMMED

Titre : SAND ENCROACHMENT BY WIND IN AL-HASA OF SAUDI ARABIA.

Auteur : ABOLKHAIR, YAHYA MOHAMMED

Université de soutenance : INDIANA UNIVERSITY BLOOMINGTON

Grade : Doctor of Philosophy (PhD) 1981

Résumé
Sand drift and sand dune movement rates in the study area are controlled by several major factors. These factors in descending order of importance are : wind characteristics (velocity, duration, and direction), mean sand grain size, dune size, sand volume available for transport, moisture content of the sand and density of vegetal cover. The objective of this study was to determine the rate of sand drift and sand dune movement as it is related to wind characteristics and mean sand grain size. Equipment to record wind characteristics was installed in the al-Hasa dune field during the period between February and June of 1980. Sand traps to measure the volume of sand moved and the direction from which it moved during this period were also installed at the project site. Sand caught in the various traps was analyzed and its statistical parameters such as the mean, sorting, skewness and kurtosis were determined. Rates of sand dune movement were determined.

Mots-clés : DUNES, GROUND WIND, OASES, PARTICLE SIZE DISTRIBUTION, SANDS, SAUDI ARABIA, WIND EFFECTS, AQUIFERS, ARID LANDS, DESERTS, MOISTURE CONTENT, SOIL MOISTURE, SPRINGS (WATER)

Présentation

Page publiée le 30 janvier 2012, mise à jour le 11 décembre 2018