Effect of Patient Visualization of Coronary Calcium by Electron Beam Computed Tomography on Changes in Beneficial Lifestyle Behaviors

详细信息    查看全文

• 作者：Raza H. Orakzai ; Khurram Nasir ; Sarwar H. Orakzai ; Nove Kalia ; Ambarish Gopal ; Kiran Musunuru ; Roger S. Blumenthal ; Mathew J. Budoff
• 关键词：Bay of Biscay ; Dispersion ; Oil spill ; Operational Oceanography ; Prestige
• 刊名：The American Journal of Cardiology
• 出版年：2008
• 出版时间：1 April 2008
• 年：2008
• 卷：101
• 期：7
• 页码：999-1002
• 全文大小：84 K

文摘

This contribution describes the procedure used during the Prestige oil-spillage event, by means of an Operational Oceanography System, and the behaviour of the present prediction tools (hydrodynamic and dispersion models) applied to it. The accuracy of these tools is estimated by a reanalysis of field data transmitted by a sea surface drifting buoy, released at the time of the oil spill. The numerical models applied were the Regional Ocean Modeling System (ROMS), fed by the available six-hourly NCEP atmospheric information, together with a Lagrangian Particle-Tracking Model (LPTM). ROMS has been used to estimate the current fields for the Bay of Biscay, whilst the LPTM has provided the oil spill trajectories. The results demonstrate that the accuracy of the numerical models depends upon the quality of the meteorological input data. In this case, the current fields at the sea surface, derived by ROMS, have been underestimated by the wind fields of the NCEP reanalysis data. An efficient calibration of these wind fields, with data provided by the Gascony buoy (fixed oceanic and atmospheric station), achieves more realistic looking results; this is reflected in the comparison between the buoy trajectory predicted numerically and the tracked movements of the drifting buoy.