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Geology topics

Research about Arizona, California, Nevada, New Mexico

Source-linked reports with geographic coverage including Arizona, California, Nevada, New Mexico.

3 recordsLinked to original sources

An ENSO predictor of dust emission in the southwestern United States

Here we show that there is a significant relationship between Nino 3.4 ENSO anomaly (Dec–Jan average) and precipitation in the southwestern United States. This contributes to increased frequency of dust events in the years following strong La Niña and El Niño years. High probabilities (60%–100%) exist for an elevated frequency of dust events in years when the ENSO anomaly, annual precipitation, or annual P/PE falls below the 10th percentile. This analysis provides a quantitative framework in which to evaluate the expected effects of climate change on this and other arid regions.

Arizona, California, Nevada, New Mexico

Simulation of ground-water flow in alluvial basins in south-central Arizona and parts of adjacent states

Numerical modeling was used to examine the character of aquifer systems in alluvial basins in south-central Arizona. The report documents the modeling approach, design and calibration procedures, and results of simulations made by using specific and general models. Transferability of geohydrologic information among basins was tested and generally proved successful. Extensive sensitivity testing was done on all models. Sensitivity to specific properties is related to geologic environment and the magnitude of predevelopment flow quantities.

Arizona, California, Nevada, New Mexico