@inproceedings{fdi:010011227, title = {{R}econnaissance hydrog{\'e}ologique par m{\'e}thodes {\'e}lectrique et {\'e}lectromagn{\'e}tique dans la r{\'e}gion du {L}ac {I}hotry, {S}ud-{O}uest de {M}adagascar}, author = {{R}asolomanana, {E}. and {A}lbouy, {Y}ves and {R}itz, {M}ichel and {R}obison, {L}aurent and {F}erry, {L}uc and {R}alaimaro, {J}oseph}, editor = {}, language = {{FRE}}, abstract = {"{L}acs et {P}al{\'e}oclimats {M}algaches" is an {ORSTOM} research project for understanding hydrological and hydrogeological behavior of lakes. {N}ear lake {I}hotry, we have carried out a geophysical survey using {S}chlumberger electrical soundings and {T}ime {D}omain {E}lectro{M}agnetics soundings ({T}.{D}.{E}.{M}.). {T}hese two methods are efficient for small resistivity variations. {S}ome limestones which are good aquifers are well-identified. {A} structural preliminary scheme is proposed along a profile. ({R}{\'e}sum{\'e} d'auteur)}, keywords = {{GEOPHYSIQUE} ; {HYDROGEOLOGIE} ; {SONDAGE} {ELECTRIQUE} ; {ELECTROMAGNETISME} ; {MADAGASCAR} {SUD} {OUEST} ; {IHOTRY} {LAC}}, numero = {}, pages = {71--77 multigr.}, booktitle = {{G}{\'e}ophysique des sols et des formations superficielles : abstracts et r{\'e}sum{\'e}s {\'e}tendus}, year = {1997}, URL = {https://www.documentation.ird.fr/hor/fdi:010011227}, }