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Remote sensing has a wide coverage, strong effectiveness, economy and ease of access, you can achieve depth macro-dynamic observation. Through remote sensing, can pixel-level scale for wide, shallow, water level changes, inaccessible lakes in arid grass-type dynamic monitoring of underwater topography. In this paper, water remote sensing theory, based on the measured water depth and ASTER images through correlation analysis to determine the optimum depth Aibi ASTER band inversion is band 1 (0.52 ~ 0.60μm). Inversion Model constructed depth Z = 2.5983x ~ 2-57.069x 312.98, R ~ 2 = 0.8652, x is the natural logarithm of a band. Inversion results show that the average depth of the lake 0.94m, a maximum depth of 3.68 m. Measured through a typical bathymetric data were verified, the absolute error in -0.36 ~ 0.20m, with an average error of 0.03m, the model can be used for remote sensing Aibi depth inversion. Minus the depth of the lake elevation DTM, constructed Aibi underwater topography DEM, and through spatial analysis, the following conclusions: Full length of more than 850m underwater lake dike of 38. Boertala River estuary, an area of ??0.39km ~ 2. Jinghe two tributaries form a large and one small fan-shaped estuary area were 0.23,0.79 km ~ 2. Aibi lake Volume was 826 million m ~ 3, build a water - water storage capacity model V = 1.0241h ~ 2 - 381.08h 35452, R ~ 2 = 0.9994, h ≤ 189. Surface area - storage capacity model V = 5E-05 S ~ 2 - 0.0091 S 0.5316, R ~ 2 = 0.9846, S lt; 550. V is the storage capacity (one hundred million m ~ 3), S is the surface area (km ~ 2), h is the water level elevation (m). Lake atrophy predicted status. When the water elevation 188.38m, the surface area of ??450.00km ~ 2, the storage capacity of 391 million m ~ 3, the minimum depth of 0.06m, max 3.68m, an average of 1.85m. Lake east and north-west outcropping, which will evolve as the area southeast of Lake 67.68 km ~ 2, crescent-shaped dry lakebed. When the water elevation 187.00m, water 189.84km ~ 2, the minimum depth of 1.18m, max 3.60m, an average of 2.43m, water storage capacity of 081 million m ~ 3. Lakes retreat to in points (655981,4971925, roughly lake central body) as the center axis (about 23.5Km), short axis (about 7.7Km) oval area (elevation 185.52 ~ 187.00m). When the water elevation 186.00m, the surface area of ??10.96km ~ 2, the minimum depth of 0.63m, max 3.51m, an average of 2.61m, water storage capacity of 003 million m ~ 3, retreat to the lake body Jinghe Estuary depressions, basically dried . Lake body length, short axis direction, underwater terrain slope maximum, mean, standard deviation were 1.23 ~ 0,0.13 ~ 0, 0.11 and 1.46 ~ 0,0.16 ~ 0, 0.14. Various statistical indicators were greater than the minor axis direction NS long axis EW, indicate the direction of the short axis underwater undulating terrain, terrain than broken, it shows the direction of the long axis EW active force shaping the underwater terrain is prevalent from Alashankou Northwest winds.
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