@article{fdi:010061954, title = {{L}ow-water maps of the groundwater table in the central {A}mazon by satellite altimetry}, author = {{P}feffer, {J}ulia and {S}eyler, {F}r{\'e}d{\'e}rique and {B}onnet, {M}arie-{P}aule and {C}almant, {S}t{\'e}phane and {F}rappart, {F}. and {P}apa, {F}abrice and {P}aiva, {R}. {C}. {D}. and {S}atge, {F}. and {D}a {S}ilva, {J}. {S}.}, editor = {}, language = {{ENG}}, abstract = {{G}roundwater plays a fundamental role in rainforest environments, as it is connected with rivers, lakes, and wetlands, and helps to support wildlife habitat during dry periods. {G}roundwater reservoirs are however excessively difficult to monitor, especially in large and remote areas. {U}sing concepts from groundwater-surface water interactions and {ENVISAT} altimetry data, we evaluated the topography of the groundwater table during low-water periods in the alluvial plain of the central {A}mazon. {T}he water levels are monitored using an unprecedented coverage of 491 altimetric stations over surface waters in the central {A}mazon. {T}he groundwater table maps interpolated at spatial resolutions ranging from 50 to 100 km are consistent with groundwater wells data. {T}hey provide evidence of significant spatiotemporal organization at regional scale: heterogeneous flow from the hillslope toward the main rivers is observed, as well as strong memory effects and contrasted hydrological behaviors between the {N}orth and the {S}outh of the {A}mazon.}, keywords = {groundwater ; {A}mazon ; radar altimetry ; {AMAZONIE} ; {AMAZONE} {BASSIN}}, booktitle = {}, journal = {{G}eophysical {R}esearch {L}etters}, volume = {41}, numero = {6}, pages = {1981--1987}, ISSN = {0094-8276}, year = {2014}, DOI = {10.1002/2013gl059134}, URL = {https://www.documentation.ird.fr/hor/fdi:010061954}, }