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.
What is a data flow diagram? A data flow diagram (DFD) maps out the flow of information for any process or system. It uses defined symbols like rectangles, circles and arrows, plus short text labels, to show data inputs, outputs, storage points and the routes between each destination.