Emprego Do Gpr Na Investigação Morfológica Dos Solos Dos Tabuleiros Costeiros No Litoral Norte Do Estado Da Bahia

Experimental employ of Ground-penetrating radar to<br>investigation of tablelands of north coastal at Bahia, Brazil<br>Nine profiles were studied along a catena developed<br>on Barreiras Group sediments, in Fazenda Rio Negro,<br>Entre Rios town (Bahia - Brasil). It was used, besides<br>the analysis traditionally maid, the search<br>electromagnetic through GPR - Ground-penetrating<br>radar. The objective of such a study was it of<br>analyzing the level of answer of that tool in the<br>acquisition of information about the features that<br>happen in the underground, by means of comparisons<br>of the radargramas and pedologic descriptions<br>obtained in the area. The used equipment was a<br>Geophysical Survey model, with antenna of 80 MHz.<br>The results of the radargramas indicate that the<br>antenna maid is not the ideal for risings that demand<br>larger detail of the most superficial layers, up to 1,0<br>depth meter. For the deepest layers it showed an<br>excellent answer, mainly in the investigation in the<br>occurrence of hardened layers, as the hardpan. The<br>radargrametric analysis confirmed the existence of a<br>process of transformation in Podzoils, that happens<br>accompanied by the hardpan and fragipan in depth.<br>Index terms: soil prospection, Ground-penetrating<br>radar, soil genesis, coastal tablelands, Barreiras Group.