Storage Flux Research Articles

THE DISTRIBUTED SEDIMENT BUDGET MODEL AND WATERSHED MANAGEMENT IN THE PALEOZOIC PLATEAU OF THE UPPER MIDWESTERN UNITED STATES

The distributed sediment budget model describes the complex sediment storage fluxes of three basin zones—tributaries, upper main valley and lower main valley—in the Paleozoic Plateau of the Midwest and is therefore useful for purposes of watershed management, especially for sediment-yield control. Tributary zones, an important sediment source of the past, are increasingly stable and now are often minor sediment sinks. They require little additional management. The upper main valley is the most problematic zone because high banks of historical sediment are being eroded, increasing downstream sediment yield. A variety of management alternatives are available, but all have some negative consequences. Simply permitting this zone to evolve naturally will eventually reduce both sediment loss and flooding in the reach, but this process will require several decades. Although upland erosion has been curtailed, the lower main valley continues to aggrade, causing backswamp areas to increase and local groundwater to ...

Magnetic film memory systems

The factors which must be considered in a magnetic film memory system design are enumerated. Particular attention is given to optimizing the amount of flux in a storage cell and the minimum signal requirements. The analyses performed indicate that memory size, memory speed, memory organization, and integrated circuit drive capability determine optimum requirements for storage flux in a magnetic cell. Thermal noise in the sensing system establishes a minimum signal level as a function of memory speed and amplifier bandwidth.