need for maintenance on the canal and Interstate Highway 8. What would be the ha
ID: 289241 • Letter: N
Question
need for maintenance on the canal and Interstate Highway 8. What would be the hazard and what be needed periodically on the canal and Interstate Highway 8 as a result of the hazard? ities up to 60 mph. This can create hazardous conditions and the 3. This region is managed by the U.S. Bureau of Land Management as the Imperial Sand Dunes Recreation Area. Portions of the dunes are available for operating off-road vehicles. What effect do you think the operation of offFeoad vehicles here would have on plant growth and the hazards you described above? BDeath Valley is along the border between the Mojave Desert and the Great Basin Desert. Analyze the images of the Death Valley region in Figs. 14.8-14.10. 1. Steep mountainous slopes occur on both the east and west sides of Death Valley. There is almost no soil or wegetation on the slopes. Describe what you think conditions would be like in the bedrock canyons on these mounain slopes shen a heavy rain falls on them. 2. Notice the alluvial fans and bajadas that form at the base of the bedrock canyons along the mountain fromts in Figs. 14.9 and 14.10. Explain how you think these landforms were formed. you can see evidence that that water has no way the Bloor of the valley, it water sometimes flows into the valley from the mountains. Death Valley is a closed basin, to drain from it. It is also the hottest and driest place in North 3. Notice that there is little, if any, standing water in Death Valley on a typical day hen there is water on America. W you think the water gets so alkaline and saly is alkaline to salty and not potable (drinkable). How de ppose you could walk down to the white patches on the floor of Death Valley in Fig. 149 and examine them. Predict what materials and conditions you would find thereExplanation / Answer
2. Hazards due to sand dunes involve dune migration and eventually blowouts that can affect the pipeline carrying water in the adjacent canals. Timely maintenance of water flow in pipes is required to effectively regulate the flow of water as dunes carrying sands can cause heavy erosion leading to the pipeline damage.
3. Off-road vehicles have had a huge impact on the biota of the Algodones Dunes, especially seen in the form of destruction of plant species due to reckless driving. The removal of plants increases the chance of a blowout as the resistive capacity of land to heavy movement of dunes reduces.
B.1 Heavy rain falling on steep sides of the Death Valley can cause flash floods, and deposit rocks and mud on roads and pavements. Rapid movement of water will lead to erosion within a short span of time.
B.2. The streams and rivers flowing from the mountains into the Death Valley deposit the sediments such as rock particles and soils when the gradient of the river becomes gentle. The deposition leads to conically shaped features adjacent to the valley and termed as an alluvial fan. The convergence of multiple alluvial fans over time cause the formation of bajadas.
B.3. Water on the floor of Death Valley is alkaline and salty because of:
a) An influx of a large number of ions from the drainage basin,
b) Greater evaporation over precipitation,
c) Enclosing shape of the basin that traps and accumulates water
B.4. The minerals that can be found on white patches of the Death Valley: Gypsum, Halite, Calcite
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.