Most of the time, the hoses are trained on spots where the firefighters can see smoke, which changes from white to gray, and sometimes to black, depending on how close and intense the underground blaze is.
Intense pressure underground caused some of the Pacific Plate to melt, and the resulting upwelling magma pushed up and hardened into the granite batholith that makes up much of the Sierra Nevada.
Currently rain runs straight into town sewers, but with climate change bringing more intense downpours, the underground pipes are becoming more frequently overwhelmed and millions of homes are now at risk of flash floods.
One danger that appears to have been given little consideration in official disaster estimates is "soil liquefaction," whereby intense vibrations release underground water, instantly turning what had once appeared to be solid land into oozing, perilous mud.
Four divers, who were hired from the same company that had helped to salvage the Russian nuclear submarine Kursk after it sank in the Barents Sea in August, 2000, had to remain inside the decompression chamber for twenty-four hours, in order to adjust to the intense water pressure underground.
Londoners have an intense relationship with the underground.
Many of the men haven't eaten since dinner the night before, to avoid the vomiting caused by working underground in intense heat, humidity, and dust-filled air.
Many hadn't eaten since dinner the night before, to avoid the vomiting caused by working underground in intense heat, humidity, and dust.
Considering land use constraints, for mitigating some disagreeable living conditions and for creating new population opportunities, city planners have different opportunities involving the two opposite vertical directions: upward, erecting higher buildings or downward, developing a more intense use of the underground space.
