Which risk significantly increases downwind subsequent to sustained tephra deposition?

💡 Explanation

Sustained tephra deposition increases the likelihood of lahars because the tephra mixes with water from rainfall or melting snow and ice, creating a dense, fast-moving mudflow; therefore, lahar risk escalates rather than accelerated soil formation.

• Which mechanism causes deflection of ocean currents when driven by prevailing winds?
• Which outcome occurs when winds encounter transverse dunes?
• Which outcome results from floodplain silt deposition inhibiting drainage?
• Which mechanism significantly reduces surface salinity in areas of intense oceanic upwelling?
• Which outcome threatens a small barrier islands when sea levels rise?
• Which phenomenon is amplified when deforestation reduces land surface evapotranspiration?