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Exploring the beautiful nature of California
California Nature: The Pacific Ocean
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The world's largest geographic feature, the Pacific Ocean covers about one-third of the earth's surface. The area of the Pacific is greater than that of all of the continents combined, and it makes up nearly half of the area covered by the earth's oceans.
The Pacific Ocean borders Asia and Oceania to the west, North and South America to the east, and Antarctica to the south. Some of the major marginal seas of the Pacific are the Bering Sea, the Sea of Okhotsk, the Sea of Japan, the East China Sea, the South China Sea, the Coral Sea, the Tasman Sea, the Ross Sea, and the Gulf of California.
The Pacific also contains more islands than the total number in
the rest of the world. Many of these islands form archipelagoes
that are the tops of submerged oceanic ridges, such as the
Aleutian Islands in the northern Pacific. The Pacific is not
only the largest ocean but also the world's oldest and deepest,
reaching its greatest depth at the Marianas Trench, near Guam.
Its most striking submarine feature is the dozen or so deep
trenches that are found around its margins. The sea floor also
has great abyssal plains and a major spreading centre ridge
called the East Pacific Rise. |
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Most of the geological activity of the Pacific occurs around its
edges. In fact, the Pacific "ring of fire" contains more than 80
per cent of the earth's active volcanoes and most of its
earthquake activity. The ocean covers several of the earth's
crustal plates. The warm vents and geysers rising from the plate
boundaries are prime habitats for rich underwater life.
The Pacific was given its name because of the tranquility of its waters, although it is occasionally swept by typhoons, and a number of strong currents circulate beneath the surface.
The influence of the icy Antarctic continent and the smaller ratio of land to sea in the southern Pacific means that water temperatures there are slightly lower than in the northern Pacific. The cold water generated around the South Pole sinks and then circulates northwards to form a cold, deep current from Antarctica to Japan.
The atmospheric and oceanic phenomenon of
El Niño in the
Pacific creates unusually warm ocean conditions, causing
climatic disturbances of varying severity.
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The warm southward current, often
accompanied by fluctuating air pressure and wind patterns,
occurs each December but is exceptionally intense every seven to
ten years. El Niño of 1982 and 1983 was the most severe of the
20th century. El Niño affects climates around the world for more
than a year.Droughts plague
some areas, while others are battered with heavy rains.
Birds and
fish die or are forced to
leave their naturalhabitat
during El Niño.
State Route 1, more often called Highway 1, is a state highway that runs along much of the Pacific coast of the U.S. state of California. It is famous for running along some of the most beautiful coastlines in the world, leading to its designation as an All-American Road.
Stretching from sunny "So Cal" to the shady forests of the
north, this coastal highway winds along some of the most
spectacular ocean views in the U.S. The highway contains
countless examples of the many intrinsic qualities that make a
highway a National Scenic Byway--qualities like perfect views of
ocean waves breaking on rocky shorelines and cliffs, dozens of
historical landmarks like Spanish Missions and Spanish
settlements, |
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Rocky bluffs and outcrops are molded by the unrelenting action of the Pacific Ocean along the California Coastline.
The California Big Sur Coastline is also the Santa Lucia
Mountain Range. A narrow range with peaks up to 5000 feet that
drop suddenly into the ocean. Microclimates abound, from grassy
hillsides, to moist redwood forests to arid and dry in the rain
shadowed eastern slope.
The Cabo Pulmo National Park, home to the only coral reef in the
Gulf of California, is under threat from a proposed large resort
community to be built nearby.
The reef, estimated to be 20,000 years old, making it one of the oldest on the Pacific coast of the Americas, is home to 226 of the 875 fish species that inhabit that body of water, which separates the Baja California Peninsula from the Mexican mainland.
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It is common to see four different species of turtles, as well as dolphins, sea
lions, whale, tiger and bull sharks, in that area near the southern tip of the
Baja Peninsula, which is also part of the migratory route used by humpback and
blue whales.
For much of Earth’s history, California only existed as part of the seafloor in a deep blue ocean.
California was slowly built by plate tectonics and now lies on the edge of a continental plate. Movement along geologic faults has sculpted spectacular landscapes that have been repeatedly shaken by earthquakes and volcanic eruptions.
Over millions of years, geology and climate have shaped California’s unique habitats and produced a rich mosaic of life. Many plants and animals here are found nowhere else, making California one of the most biologically diverse places in the world.
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