(Encyclopedia) Chicago, river, formed in Chicago by the junction of its North Branch (24 mi/39 km long) and South Branch (10 mi/16 km long), and flowing southeast via a canal into the Des Plaines…
(Encyclopedia) fjord or fiordfjordfyôrd [key], steep-sided inlet of the sea characteristic of glaciated regions. Fjords probably resulted from the scouring by glaciers of valleys formed by any of…
The Perfect Storm?WeatherBlowing Cold and Hot: The Big OnesWinter Gone SouthBig-City SnowsStorm of the Century?The Greatest One of AllModern Winter of Deep SnowsGalveston Storm SurgeThe Great New…
(Encyclopedia) skin diving, act of swimming freely underwater. It is done with the aid of a face mask, swimming fins for the feet, and either a snorkel breathing tube or scuba [acronym for self-…
(Encyclopedia) subduction zone, large-scaled narrow region in the earth's crust where, according to plate tectonics, masses of the spreading oceanic lithosphere bend downward into the earth along the…
(Encyclopedia) Ballard, Robert DuaneBallard, Robert Duanebălˈərd [key], 1942–, American marine geologist, b. Wichita, Kans.; Ph.D. Univ. of Rhode Island, 1974. From 1969 to 1997 he was associated…
(Encyclopedia) Kootenay National Park, 543 sq mi (1,406 sq km), SE British Columbia, Canada; est. 1920. In the Rocky Mts. near Kootenay Lake, it contains high peaks, glaciers, deep canyons, and hot…
(Encyclopedia) Zion National Park, 146,592 acres (59,349 hectares), SW Utah. First proclaimed a national monument in 1909, it was enlarged several times and established as a national park in 1919.…
(Encyclopedia) Sigsbee, Charles Dwight, 1845–1923, American naval officer, b. Albany, N.Y. He saw service in the Gulf of Mexico in the Civil War, was subsequently stationed with the Asian squadron,…
