Because of theinfluence of wind in creating current, there is a relationshipbetween this oceanic circulation and the general circulationof the atmosphere. The oceanic circulation is shown on thechart following this page (winter N. hemisphere), with thenames of the major ocean currents.
Radiological Dispersion Device. Terrorist use of a Radiological Dispersion Device (RDD) â often called âdirty nukeâ or âdirty bombâ â is considered far more likely than use of a nuclear explosive device. An RDD combines a conventional explosive device â such as a bomb â with radioactive material.
ERD. Short for Emergency Repair Disk, an ERD is a diskette that creates backups of system files and settings and can help troubleshoot and fix issues for Windows NT and Windows 2000 users. The ERD is used in conjunction with the Windows repair option and will prompt for the diskette when needed. Note: The ERD is not to be confused with a standard boot diskette as it cannot be used alone.