aska, Gulf of Tonkin, Java Sea,
Philippine Sea, Savu Sea, Sea of Japan, Sea of Okhotsk, South China
Sea, Tasman Sea, Timor Sea, and other tributary water bodies
Area - comparative: about 15 times the size of the US; covers about
28% of the global surface; larger than the total land area of the
world
Coastline: 135,663 km
Climate: planetary air pressure systems and resultant wind patterns
exhibit remarkable uniformity in the south and east; trade winds and
westerly winds are well-developed patterns, modified by seasonal
fluctuations; tropical cyclones (hurricanes) may form south of Mexico
from June to October and affect Mexico and Central America;
continental influences cause climatic uniformity to be much less
pronounced in the eastern and western regions at the same latitude in
the North Pacific Ocean; the western Pacific is monsoonal - a rainy
season occurs during the summer months, when moisture-laden winds blow
from the ocean over the land, and a dry season during the winter
months, when dry winds blow from the Asian landmass back to the ocean;
tropical cyclones (typhoons) may strike southeast and east Asia from
May to December
Terrain: surface currents in the northern Pacific are dominated by a
clockwise, warm-water gyre (broad circular system of currents) and in
the southern Pacific by a counterclockwise, cool-water gyre; in the
northern Pacific, sea ice forms in the Bering Sea and Sea of Okhotsk
in winter; in the southern Pacific, sea ice from Antarctica reaches
its northernmost extent in October; the ocean floor in the eastern
Pacific is dominated by the East Pacific Rise, while the western
Pacific is dissected by deep trenches, including the Mariana Trench,
which is the world's deepest
Elevation extremes:
lowest point: Challenger Deep in the Mariana Trench -10,924 m
highest point: sea level 0 m
Natural resources: oil and gas fields, polymetallic nodules, sand and
gravel aggregates, placer deposits, fish
Natural hazards: surrounded by a zone of violent volcanic and
earthquake activity sometimes referred to as the "Pacific Ring of
Fire"; subject to tropical cyclones (typhoons) in southeast and east
Asia from May to December (most frequent from July to October);
tropical cyclones (hurricanes) may form south of Mexico and strike
Central America and Mexico from June to October (most common in August
and September); cyclical El Nino phenomenon occurs off the coast of
Peru, when the trade winds slack
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