What’s in Yellowstone’s Future?Last Updated on 2010-12-22 00:00:00
Steam Explosions, Earthquakes, and Volcanic
Eruptions—What’s in Yellowstone’s Future?
Yellowstone, one of the world’s largest active volcanic systems, has produced several giant volcanic eruptions in the past few million years, as well as many smaller eruptions and steam explosions. Although no eruptions of lava or volcanic ash have occurred for many thousands of years, future eruptions are likely. In the next few hundred years, hazards will most probably be limited to ongoing geyser and hot-spring activity, occasional steam explosions, and moderate to large earthquakes. To better understand Yellowstone’s volcano and earthquake hazards and to help protect the public, the U.S. Geological Survey, the University of Utah, and Yellowstone National Park formed the Yellowstone Volcano Observatory, which continuously monitors activity... More »
Marine life and fisheries in the Gulf of MexicoLast Updated on 2010-09-26 00:00:00
One of the biggest industries in the Gulf of Mexico is the fishing (commercial and recreational).
In 2008, commercial fishermen in the Gulf of Mexico harvested 1.27 billion pounds of finfish and shellfish that earned $659 million in total landings revenue. Two of the largest commercial fishing operations in the Gulf of Mexico are red snapper and shrimp. Brown shrimp is the most important species in the U.S. Gulf fishery, with principal catches made from June through October.
There were 3.2 million recreational fishermen who took a fishing trip in the Gulf of Mexico region, and they took 24 million fishing trips in 2008.
Major shrimp species in the Gulf of Mexico include white shrimp, pink shrimp and brown shrimp. These species are mainly located in coastal areas. During the spring, the young, or postlarvae, migrate from coastal areas. Impacts on these shrimp will increase as... More »
Great Barrier Reef World Heritage Area, AustraliaLast Updated on 2009-10-15 18:30:45
The Great Barrier Reef World Heritage Area is a major marine ecosystem exhibiting the largest extent of coral reefs on Earth; its geographic range (24°30'N to10°41'S, 145°00' to 154°00'E) comprises a World Heritage Site that extends for more than 2000 kilometres within the Coral Sea off the eastern coast of Australia, from immediately south of the Tropic of Capricorn to the coastal waters of Papua New Guinea.
The Great Barrier Reef Marine Park Act 1975 provides for the establishment, control, care and development of a Marine Park covering 98.5% of the Great Barrier Reef Region as defined in that Act. Parts of Green Island (1937) and Heron Island (1943) were gazetted as national parks under the State Forests and National Parks Act 1903-1948 (Queensland).... More »
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