GEOLOGY

EARTH SCIENCE

GROUNDWATER

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
How could a long-term decrease in precipitation impact an area?
A
It could increase the average water level of lakes in the area.
B
It could increase the amount of flooding in the area.
C
It could decrease the amount of possible infiltration in the area.
D
It could decrease the possible amount of damage to crops in the area.
Explanation: 

Detailed explanation-1: -A decrease in precipitation can reduce soil moisture over the short term and increase soil erosion rates over the long term.

Detailed explanation-2: -The larger the rainfall intensity, the higher the initial and steady infiltration rates were, and the cumulative infiltration increased faster with time. Moreover, the larger the rainfall intensity, the smaller the wetting front difference was at the top and the end of the slope.

Detailed explanation-3: -Actual infiltration rate is typically lower due to the limited water supply to the soil surface, especially during early times during typical rainfall events. Indeed, infiltration capacity starts out large during early times, and as more and more rainfall infiltrates, infiltration capacity decreases with time.

Detailed explanation-4: -If precipitation is greater than infiltration capacity, surface runoff occurs. If precipitation is less than the infiltration capacity, all moisture is absorbed.

Detailed explanation-5: -Precipitation. Soil characteristics. Soil moisture content. Organic materials in soils. Land cover. Slope.

There is 1 question to complete.