Side-scan and acoustic subbottom characterization of the sea floor near the Dry Tortugas, Florida |
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| Authors: | Thomas F. Wever Hannelore M. Fiedler Gunther Fechner Friedrich Abegg Ingo H. Stender |
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| Affiliation: | Forschungsanstalt der Bundeswehr für Wasserschall und Geophysik (FWG), Klausdorfer Weg 2-24, 24148 Kiel, Germany, DE
Geologisch-Pal?ontologisches Institut, Universit?t, Olshausenstr. 40-60, 24098 Kiel, Germany, DE
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| Abstract: | Between 2 and 6 February, 1995, a 25 km2 area at the Dry Tortugas (Florida Keys) was surveyed with a 100 kHz side-scan sonar system and 3.5-kHz subbottom profiler. The side-scan system revealed a pattern of alternating high and low backscatter. The subbottom profiler showed areas with no acoustic penetration between sediment troughs. The combination of both methods allowed delineation of the boundaries in high-backscatter regions, and sediment samples allowed correlations between high backscatter and coarser-grained sediments. |
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