...-deepwater, marine archaeologists in the energy sector have greatly benefited from technological improvements originally aimed at the exploitation of offshore oil and gas. Beginning with echosounders, side-scan sonars, and magnetometers in towed arrays, before moving into high-resolution side-scan sonars...

... resolution survey technique subsurface archaeological context reservoir characterization survey methodology knowledge continental shelf boundary magnetometer gulf offshore technology conference requirement landscape mexico prehistoric landscape upstream oil & gas cultural...

... developed, including an Input tool, Generate Survey Boundary tool, Visualization tool, and Confidence Modeling tool. Collectively these scripts comprise the Magnetometer Survey V.1.0 toolbox, which integrates into ArcGIS via ArcToolbox. Once marine magnetic survey data is output from a data acquisition...

... Abstract The objective of this paper is to outline the advantages of using a gradiometer over a marine magnetometer for surveying the seafloor. Marine surveys conducted with a gradiometer will minimize external interference in the field allowing the interpreter to provide quick results...

... phase, an AUV, operated at 70m above the seafloor, helped to establish high-resolution (1 m) bathymetric maps on targets identified during Phase 1. Near seafloor, magnetic anomalies were recorded using a deep magnetometer on the AUV. Analysis of AUV acoustic signals in the water column allowed to find...

... and subseabed soil properties and structure, and detect all objects that may prove hazardous to pipeline installation and operation. Survey data are collected by a variety of sensors: multibeam and sidescan sonars, magnetometers and subbottom profilers. In environments where UXO may be present, these sensors...

... ABSTRACT Locating buried small diameter sealines (say < 10") with conventional geophysical methods has always been a problem for the off-shore oil industry. Standard towed survey tools, based on reflection seismics or proton magnetometers, suffer from their lack of resolution...

... operation drilling fluids and materials overviewof magnetometer cruise drill pipe selection scientific ocean drilling otc 4989 ship upstream oil & gas core analysis ocean drilling program drilling fluid management & disposal tamu joide resolution microscope drilling equipment...

... INTRODUCTION A high sensitivity rubidium 87 magnetometer, designed and built by the author, is used at sea to make magnetic profiles over subsurface structures of interest. The Texas A&M University Research Vessel GYRE was used to launch, tow and recover a nonmagnetic fiberglass skiff...

..., a digital bathymetric profiler, an electromagnetic sound source with sub-bottom penetration up to 75 meters (240 feet), a high resolution piezo-electric sub-bottom profiler for acquisition of detailed shallow depth structural information, and a magnetometer for defining ferromagnetic anomalies. Hard...

... the line of cable, and placing their ground moorings no closer than 800 m to the cable track. sea bed cable ship repair-a review repeater grapnel terminal station splice cable track walter foster final splice interruption cable magnetometer fathom ship conductor requirement...

... of the crater which had been set to mark the location. A Varian Nuclear Resonance Magnetometer was towed about 500 ft astern across the crater along azimuths about 450 apart. Three anomalies were discovered. One was near the center of the crater with a positive anomaly of slightly more than 100 gammas, and one...

... co 9 magnetic flux compass engineer magnetic north electrical value ship voltage navigation operation application diagram accuracy magnetic compass generator magnetometer magnetometer compass hydrographic chart analog computer reservoir characterization OFFSHORETEGHNOLOGY...

... in such an offshore cover survey of a 16-in. submarine pipeline located off the Galveston coast. It begins with a detailed description of the equipment used, such as the differential proton precession magnetometer, recording fathometer, low frequency acoustic subbottom profiler and the ultra-sensitive dual channel...

... gravity, towed magnetometer, single-ship re- fraction and seismic profiler will give the desired information most rapidly and economically. Cost fac- tors for this type of survey will be I 3'76 RVAUTA'T'TON O"F IVI ,I-{ 'I@ RECONNAISSANCE TECHNIOUES OTC 1118 compared with costs involved in more...