Where likely sources of debris flows are a short distance upstream and the channel gradient is high, ____
a. a trip wire is more effective than an acoustic flow meter for debris flow warnings
b. sirens should not be used in debris early warning systems
c. warning time for a debris flow may be too short to allow for evacuation
d. the danger to humans from a debris flow is minimized
e. debris flows and mudflows will never be covered by flood insurance
ANSWER: c
You might also like to view...
Briefly explain how the phylogeny of an extinct group can be determined
What primary sector industries are associated with the Pacific Northwest?
A) Cotton and tobacco farming B) Shrimping, rice farming C) Forestry/logging, salmon fishing D) Coffee and pineapple plantations
Most active faults pose a risk to society because they can potentially produce ________
A) disruptions in groundwater flow B) landslides C) tsunamis D) earthquakes
In the old practice of taking a pet canary into a coal mine to detect the presence of carbon monoxide, the canary represents a(n) ____ species.
A. generalist B. native C. indicator D. specialist E. keystone