N-25 TOWARDS HIGH-RESOLUTION 3-D MARINE SEISMIC SURVEYING USING BOOMER SOURCES B. MILKEREIT 1 CF. MUELLER 2 F. THEILEN 1 and T. BOHLEN 1 1 Summary High-frequency 3-D seismic reflection data acquired in shallow marine and lake environments yield continuous maps and cross-sections and provide new constraints on the nature extent and regional distribution of subsurface geology. High-frequency boomer sources show sufficient stability to be used in multi-channel seismic surveys. A 2.5-D feasibility study was successfully conducted in the Baltic Sea revealing shallow gas accumulations and a Pleistocene fluvial channel system beneath unconsolidated sediments. Introduction Extensive tests are required to optimize