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Last updated 10/02   X-star Sub-bottom High-resolution Seismic-reflection (sonic) Profiler with 2-12 kHz Edgetech Towfish Co-owned with the Hobart William Smith Geosciences Department Purchased with a grant from the National Science Foundation Analyses: Sub-bottom profiling produces printouts of sonar records collected along cruise-track survey lines that provide an 'image' of the underlying stratigraphy of marine and lake bottom sediments. Our system is able to penetrate the subsurface to depths of 30 meters with a resolution of 10-100 cm. Related Research: This system has been used to collect data for the following research: Eastern Lake Ontario, NY state: study of bottom and coastal sediment distribution and dynamics Lagoon of Venice, Italy: study of the evolution of tidal channel migration within this subsiding basin New South Wales, Australia: study of estuarine sediments and the history of tidal "lakes"