... The API recommended wave load recipe is based on a "design wave approach" which uses a nonlinear regular wave theory such as Stream Function. When using such a nonlinear regular wave theory, a wave with a specified height, period and current has an associated crest that can...

... Abstract The hurricanes of 2004 and 2005 caused substantial damage even to relatively new deepwater facilities such as Petronius and Pompano. Crest heights calculated using standard theories are unlikely to have caused such damage. Several possible reasons for the discrepancy between crest...

... modeling - to understand the relationship of the shot and receiver spacing and resulting image resolution for different acquisition geometries including surface tow, roll-along OBC, and Figure 2: Examples of areas where towed streamer data is compromised over the structure crest due to seabed scarps...

... of a successful evacuation, particularly in terms of avoiding collisions after launching. bf 8 evacuation system wave steepness lifeboat orientation installation tempsc bf 7 clearance weather limit platform upslope perpendicular wave height evacuation crest weather condition collision...

... complex and associated mudflow deposits occur along the anticlinal crest within a large depression bound on three sides by steep high-relief slump scarps and rotated blocks. The depression opens to the east into a large sea valley bound on both sides by slump scarps. Surface mudflows trend seaward through...

... existed after initial geohazards evaluations for the diapiric hill in the Auger Prospect Area. This paper describes the results of two manned submersible dives on this cone-shaped feature and the correlation of surficial ground truth (collected from the base of the feature to its crest) to acoustic data...

... of a set of 4-km-spaced seismic profile that covera 4,800 square-kilometer area on the crest of the Blake Ridge. Moderately small, pneumatic seismic-sound sources provided adequate power to penetrate below the region of gas-hydrate stability, while still maintaining the best possible resolution. Sources...

...% coverage). metals & mining crest upstream oil & gas nodule organism concentration abundance nodule abundance exploitation manganese nodule seafloor rock outcrop nodule size nodule distribution characteristic photograph deposit nodule distribution nodule coverage sediment...

.... long wave approximate method crest trough horizontal velocity wave train extrapolation wave theory dual component wave prediction upstream oil & gas frequency component wave spectrum short wave wave kinematic regular wave interaction elevation mechanics wheeler OTC 6522...

... in a year (Figure 1 & 2). The Liaodong Bay is being explored and developed by BOC, mainly relying on China's own capital investment, technology and operation staff. In 1986, SZ 36–1–1 well was completed on the central crest of SZ 36–1 prospect, and oil flow was tested from Pre-Mesozoic top...

... ratio of the flow. equation simulation trough current profile wave force thrust upstream oil & gas rodenbusch cognac houston platform rdwf model wave kinematic proceedings instrumentation system coefficient hour 1100 forristall crest hour 1700 mean thrust OTC 6006 fi...

... near the breaker crest (SPM, 1984, eqn. 7–69, p. 7–159) that assumes the horizontal velocity near the breaker crest is equal to the celerity of wave propagation. This assumption is questionable in that numerical simulations of breaking waves (Longuet-Higgins and Cokelet, 1976) and physical measurements...

... coordinate transformation. Vertical extrapolation uses linear theory (unstretched) below the mean water line (MWL) and, for wave crests, assumes a constant amplitude of velocity or acceleration above the MWL. Force and response predictions using vertical extrapolation have been shown to closely agree...

... the perimeter of the island. The bunds are then infilled by discharging in the central portion of the island. model test slope crest crest otc 4921 dredge construction berm slope lateral flow water depth hopper island sloped underwater berm berm amerk trailer suction hopper dredge steep...

... floe friction ice-berm interaction edqe crest berm aTe 4672 Ice/Berm Interactions by A.B. Dunwoody and J.A. Losch, Dome Petroleum Ltd., and K. Been Copyright 1984 Offshore Technology Conference -- This paper was presented at the 16th Annual OTC in Houston, Texas, May 7-9, 1984. The material...

... velocities exceeded 30 cm/s at 1 m above bottom. The complex bathymetry of the large sand waves, characterized by rapid variations in the elevation of crests, complicates comparison of the anchor station results. Short-term deployments of GEOPROBEs in July 1978 showed that most of the transport of bottom...

... water particle velocity distributions beneath the crest for eight cases, the distribution of vertical velocity for one case, and one measured profile. They concluded that none of the commonly used wave theories were in exceptional agreement with the data. Dean and Le Mehaute(2,6) later found that Stream...

... ABSTRACT The equilibrium position of a center tethered buoyant spar buoy on the surface of the ocean is parallel to the crests of the wave train. This phenomenon has been used in the design of a wave direction monitoring buoy which permits reliable and inexpensive measurement of wave...

... of the predicted and observed velocities show a fair amount of scatter, but also a clear and persistent bias toward overprediction. particle velocity spectra forristall frequency crest elevation upstream oil & gas transfer function wave kinematic delia spectrum accuracy unidirectional wave...

... on each other. Sand grains either rollover the bottom or form sheet flows, the latter moving as fast as 30 cm/s over the crests of the larger bed forms. High-resolution seismic profiling and side-scan sonar with accurate Mini-Ranger positioning were used to map two areas in detail. Underwater television...