... with the arrival of the NBC rings and persistently in summer. Enhancement of the sub-inertial (5-10 days) variations is also detected in association with all four rings, suggesting that sub-inertial oscillations can be excited by the NBC rings. oscillation guyana near-inertial oscillation figure 1...

... mexico oscillation geophysical research cyclonic eddy agreement storm drilling equipment hurricane barry time-series offshore technology conference eddy hurricane laura journal lce Introduction The main purpose of this paper is to evaluate the performance of HYCOM-TSIS through...

... Abstract Understanding the physics of generation, propagation, and dissipation of inertial currents is important from a variety of aspects. For the Gulf of Mexico, one such aspect is that these oscillations represent an uncertainty in the measurements and forecasting of the longer-period...

...) between eddy activity and intensity of inertial oscillations within the water column. We present data collected from ADCPs at several locations in the northern Gulf of Mexico along with an extensive network of drifting buoys in correlation with daily frontal analyses and a comparison with historical...

... The hydrodynamic drag and added mass of a blowout preventer (BOP stack) influences the resonant amplitudes and frequencies of a drilling riser system during connected (low amplitude oscillations) and disconnected (high amplitude oscillation) conditions. The prediction of hydrodynamic loads...

... system roll angle riser balcony riser system offshore technology conference inertia matrix spread moored fpso coupling roll motion fpso roll motion riser oscillation fpso upstream oil & gas roll stiffness stiffness displacement inertia flexible riser Bigot F. , Seah...

... mode derivative turret centre thruster subsea system floating production system aft thruster oscillation blue line vessel centre turret upstream oil & gas stiffness equilibrium fpso controller artificial intelligence stability eigenmode sway force forward thruster...

.... ( 2001 ), "A Study of the Interaction of the North Atlantic Oscillation with Ocean Circulation" , Journal of Climate , vol. 14 , pg. 1399 - 1421 , doi: http://dx.doi.org/10.1175/1520-0442 Visbeck , M. , Chassignet , E. P. , Curry , R. G. , Delworth , T. L. , Dickson , R. R...

... characteristic spectra period range water column vangriesheim continental slope upstream oil & gas alongshore current offshore technology conference fluctuation oscillation offshore angola sanha ctw frequency range reservoir characterization hycom khz adcp time series...

.... Some of the identified events were caused by strong inertial oscillations with multiple speed peaks confined to a relatively narrow layer centered around 500m. Mid-water jets have been identified in previous work [2] but this new analysis provides far more cases and suggests that the jets have an upper...

... Abstract One of the resources for alternative energy extraction in the area of offshore engineering is the marine current. Traditionally, the marine current energy is extracted through rotation based turbines. However, it became clear that to use of oscillation-based devices rather than...

... fluid dynamic (CFD) analysis that has been applied to a blowout preventor (BOP) stack undergoing vertical oscillation during deployment from a floating drilling rig. CFD analysis has been used to determine added mass and to show that the drag on an oscillating BOP stack can be much more favorable than...

... technology conference furrow reservoir characterization current measurement furrow field upstream oil & gas oscillation adcp cascade variability measurement program OTC 20753 Bottom Current Measurements at GoM Furrows for the Cascade and Chinook Fields Development Jose Antonio M.Lima, Eric...

... to reproduce in print is restricted to an abstract of not more than 300 words; illustrations may not be copied. The abstract must contain conspicuous acknowledgment of OTC copyright. Abstract Inertial currents (also known as inertial oscillations or inertial waves) are a well known ocean phenomenon commonly...

... helical strake (no damage) TYPES OF TESTS Three different types of tests were carried out: ? Test type 1: Vertical oscillation in still water (KC and Sarpkaya Beta test) ? Test type 2: Non oscillating tow test (Drag test) ? Test type 3: Vertical oscillation while towing (VIV test) 8 OTC 19289 Figure -8...

...-soil interaction. Improved methods are necessary to raise the reliabilityof these designs in marginal cases, enhancing the viability of offshorehydrocarbon developments in deep water. embedment lay process lay effect assessment penetrometer penetration oscillation touchdown point...

... instability gyration amplitude natural period diameter riser equation cylinder experiment oscillation rigid cylinder test vibration rotation onset flow speed analytical model cylinder rigid spring-mounted cylinder OTC 16342 Flutter Instability in Riser Fairings S. T. Slocum...

... accounts of severe high frequency oscillations during on-deck testing had been received. These accounts were sporadic and occurrence of the oscillations could not always be re-created. In-situ subsea data acquisition and testing was considered but considered impractical due to the shear cost of rig time...

... dynamic behavior sea state oscillation geostar recovery amplitude us government university ship operation upstream oil & gas head sea otc 14051 deployment water depth application space shuttle modus bs diagram bottom station observatory Copyright 2002, Offshore...

... conditions, however, thecoupled system of floating structure and swinging load shows different linearand nonlinear phenomena: in-phase and anti-phase load oscillations mutually coupled tointerdependent transverse and angular resonance motions of the cranevessel subharmonic motions of the vessel due...