Document Type

Article

Publication Date

1979

Abstract

The Wahiba sanda occur In a poer Idep jal cest of nonheastam Oma They are boderesd on the narth, south and west by prodominnty imnesone righland= Mult-spectral Landsat Thematlo Mapper (TM) images and Radarsal-1 dala were used 1 characdenize we sanda and the sumounding region betesen 19-23.5M and .5-80"E. Tis Included mapeing surace drainage, faulte and fraclures, radar- revealed palaeodrainipn. and Beolen teatures. Based the remotesensing perspective, a new model la propøsed for their evolution, ln thla-modal, the-primnary sand sources are deposils from the principal wadis that drain into the Wahiba basin from tho Bumounding highlands. Fluvlally reworked fault zones dafine thel shape of the basin causing the northeasterm and southwestern margins lo be lincar. During dry climates, winel- bOcame the principal modification rogime and' began 9 shape and sor the tuwally Jrposed sand into the gựsesi Tham sand sheets that characterize the Wahiba region_ The thickness of the sanda appears to rellect the depth of the basin in iey lie. "Thê centlet ot the basin is fled welh the thickest sand (the High Sanda), and the soulhem basin is fled wlth less sand fthe Low Sanda), The Peripheral sands curmally defihed mangine and are aseoctded with atemating fuvial and aeolilan iat Today apolan rewarkine dominates in the Wahiba regian, allhough the ril| Sards continue la evserienee same fuvlal acton fror occasional.seasonal rainfall.

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