Asymmetry of the Intertropical Convergence Zone Asymmetry of the Intertropical Convergence Zone There are a number of explanations of the asymmetry of the Intertropical Convergence Zone (ITCZ), known by sailors as The Doldrums. The ITCZ would be expected to overlie the geographic equator according to symmetric solar radiation. However, the ITCZ is mostly perennial in the northern hemisphere and in the eastern Pacific and Atlantic Oceans. It was originally explained by the asymmetrical distribution of continents. However, the distribution of land and ocean is severely asymmetric in the Indian Ocean, yet the ITCZ moves back and forth there between the southern and northern hemispheres. Continents surround
Cave of the Winds (New York) and walkways. Tropical storm-like conditions can be experienced, as winds can reach up to 68 mph underneath the falls. The cave was obliterated in a massive 1954 rockfall and subsequent dynamiting of a dangerous overhang. Today, the "Cave of the Winds" is the name of a tourist attraction near the same site. An elevator takes people from the area between the American and Canadian Falls down to the level of the Niagara River at the base of the American Falls. A series of redwood decks and platforms allow sightseers to walk right up to the base of the Bridal Veil