... depths from 86 to 135 feet. The locations were GI 40B, GI 40F, GI 41A, GI 47C, GI 48D, WD 69C, and WD 69K (Figure 1), which are all within 20 to 35 miles west of the centerline track of Hurricane Katrina. debris field upstream oil & gas imaging towfish sensor platform swath water...

... drape sediment upstream oil & gas corer positioning towfish OTC 7676 OMAN-INDIA PIPELINE ROUTE SURVEY J. E. Mullee, INTEC Engineering, Inc. Copyright 1995, Offshore Technology Conference This paper was presented at the 27th Annuel OTC in Houston, Texas, U, S.A,, 1-4 May 1995. This paper...

... available regional data to give optimum coverage of local g vertical exaggeration prospect area data quality operation bottom relief deep-tow operation profiler upstream oil & gas high-resolution hazard real time system towfish artificial intelligence computer sea floor reservoir...

... of side scan sonar have led to its use as a valuable inspection tool for coastal structures. In side-scan sonar systems, acoustical energy is projected laterally from a pair of transducers mounted in a towed cylindrical body or "towfish" (Figure 1). Electrical energy, supplied through...

... and a remotely controlled acoustic navigation transceiver on the towfish, which communicates via a modem over the 9 km tow cable. Relative accuracies within ±3 metres are achieved at all depths, with array deployment, calibration and recovery times of 12 to 15 transponders rarely exceeding 50 hours for a 6 by 12...

... assembly system installation and sound velocity variations is also discussed. II. INTRODUCTION The use of ultra-short baseline acoustic systems is common in survey applications for tracking towed bodies. These applications include tracking of deep-towed seismic towfish and near-surface seismic streamers...

... reservoir characterization tow cable attenuation coaxial steel tow cable equalization towfish converter operation transmission point amplifier naval ocean research telemetry system cable seismic system deep-towed array geophysical system GTC 4815 Deep-Towed Array Geophysical System by S.K...

... and radar imaging systems have been used to extend our vision on land and in space. hussong sonar hawaiiinstituteof geophysics aspect ratio imaged swath paper inpreparation mapping sonar swath bandwidth towfish altitude average aspect functionof resolution processingsystem frequency...

... to these rather complex systems. vertical sector towfish transducer separation depth profile phase measurement upstream oil & gas wide swath depth measurement correspond depth sensor transducer approx sonar depth measurement declination angle reservoir characterization receiver john...

.../4 meter) and the exact location of all parts determined. towfish height correction sms towfish digital tape deck minimally darkness slant range seafloor conventional side scan seafloor mapping upstream oil & gas distortion strength playback seafloor material atotally new...