A geyser is a spring characterized by intermittent discharge of water ejected turbulently and accompanied by steam. As a fairly rare phenomenon, the formation of geysers is due to particular hydrogeological conditions that exist only in a few places on Earth. Generally all geyser field sites are located near active volcanic areas, and the geyser effect is due to the proximity of magma. Generally, surface water works its way down to an average depth of around 2,000 metres (6,600 ft) where it contacts hot rocks. The resultant boiling of the pressurized water results in the geyser effect of hot water and steam spraying out of the geyser's surface vent.
The Province of Grosseto is a province in the Tuscany region of Italy. Its capital is the city of Grosseto. As of 2013 the province had a total population of 225,098 people.
Geothermal energy is thermal energy generated and stored in the Earth. Thermal energy is the energy that determines the temperature of matter. The geothermal energy of the Earth's crust originates from the original formation of the planet and from radioactive decay of materials. The geothermal gradient, which is the difference in temperature between the core of the planet and its surface, drives a continuous conduction of thermal energy in the form of heat from the core to the surface. The adjective geothermal originates from the Greek roots γη (geo), meaning earth, and θερμος (thermos), meaning hot.
The geothermal areas of Yellowstone include several geyser basins in Yellowstone National Park as well as other geothermal features such as hot springs, mud pots, and fumaroles. The number of thermal features in Yellowstone is estimated at 10,000. A study that was completed in 2011 found that a total of 1,283 geysers have erupted in Yellowstone, 465 of which are active during an average year. These are distributed among nine geyser basins, with a few geysers found in smaller thermal areas throughout the Park. The number of geysers in each geyser basin are as follows: Upper Geyser Basin (410), Midway Geyser Basin (59), Lower Geyser Basin (283), Norris Geyser Basin (193), West Thumb Geyser Basin (84), Gibbon Geyser Basin (24), Lone Star Geyser Basin (21), Shoshone Geyser Basin (107), Heart Lake Geyser Basin (69), other areas (33). Although famous large geysers like Old Faithful are part of the total, most of Yellowstone's geysers are small, erupting to only a foot or two. The hydrothermal system that supplies the geysers with hot water sits within an ancient active caldera. Many of the thermal features in Yellowstone build up sinter, geyserite, or travertine deposits around and within them.
The geothermal areas in Lassen Volcanic National Park include several groups of hot springs and fumaroles, as remnants of former volcanic activity, exist in Lassen Volcanic National Park. Most of these lie in or are closely adjacent to Mount Tehama's caldera. Bumpass Hell is the most spectacular of these, but others of importance are Sulphur Works, Little Hot Springs Valley, Boiling Springs Lake and Devil's Kitchen. In each thermal area, the highest temperature of water generally is close to the boiling temperature at the altitude of the particular spring or fumarole — 198 °F (92 °C) at Bumpass Hell and 191 °F (88 °C) on the northwest flanks of Lassen Peak. Temperatures as high as 230 °F (110 °C) have been recorded in the park.
Beowawe is a small town, misnomered on the internet as a ghost town, in Eureka County in northeastern Nevada in the western United States. It is the site of a mining operation and a geothermal power plant, and has a public library. Beowawe is a Paiute Native American word meaning "gate", so named for the peculiar shape of the hills close to town which gives the effect of a gateway opening to the valley beyond. The town is located at an elevation of 4,695 feet (1,431 m), and is situated on State Route 306 5 miles (8 km) south of Interstate 80. The Humboldt River runs through northern Nevada near Beowawe. At approximately 300 miles (480 km) long, it is the second longest river in the arid Great Basin of North America. It has no outlet to the ocean, but instead empties into the Humboldt Sink.
Larderello is a frazione of the comune of Pomarance, in Tuscany in central Italy, renowned for its geothermal productivity.
Saturnia is a spa town in Tuscany in north-central Italy that has been inhabited since ancient times. It is a frazione of the comune of Manciano, in the province of Grosseto. Famous for the spa which gives it its name, its population is 280.
The Mayacamas Mountains are located in northwestern California in the United States. The mountain range is part of the Northern Inner Coast Ranges, of the California Coast Ranges System.
Monterotondo Marittimo is a comune (municipality) in the Province of Grosseto in the Italian region Tuscany, located about 80 kilometres (50 mi) southwest of Florence and about 45 kilometres (28 mi) northwest of Grosseto, near the Colline Metallifere.
Geothermal energy in the United States was first used for electric power production in 1960. The Geysers in Sonoma and Lake counties, California was developed into what is now the largest geothermal steam electrical plant in the world, at 1,517 megawatts. Other geothermal steam fields are known in the western United States and Alaska. Geothermally generated electric power can be dispatchable to follow the demands of changing loads. Environmental impact of this energy source includes hydrogen sulfide emissions, corrosive or saline chemicals discharged in waste water, possible seismic effects from water injection into rock formations, waste heat and noise.
The Geysers is the world's largest geothermal field, containing a complex of 18 geothermal power plants, drawing steam from more than 350 wells, located in the Mayacamas Mountains approximately 72 miles (116 km) north of San Francisco, California.
Geothermal power is power generated by geothermal energy. Technologies in use include dry steam power stations, flash steam power stations and binary cycle power stations. Geothermal electricity generation is currently used in 26 countries, while geothermal heating is in use in 70 countries.
Hunter's Hot Springs are natural geothermal springs located in Lake County, Oregon, United States, 2 miles (3 km) north of Lakeview. The springs are named after Harry Hunter, who bought the springs in 1923. The best known feature within the geothermal area is Old Perpetual, which was once Oregon's only continuously erupting geyser. The geyser was formed as a result of a well drilling attempt while Hunter was developing a health resort at the springs.
Boracifero Lake is a lake in the comune of Monterotondo Marittimo, in the Province of Grosseto, Tuscany, Italy.
Kronotsky (Кроноцкий) Nature Reserve is a nature area reserved for the study of natural sciences in the remote Russian Far East, on the coast of the Kamchatka Peninsula. It was created in 1934 and its current boundary contains an area of 10,990 km2 (4,240 sq mi). The largest lake in the reserve is Lake Kronotskoye, which covers an area of 246 square kilometres (95 sq mi). It also has Russia's only geyser basin, plus several mountain ranges with numerous volcanoes, both active and extinct. Due to its often harsh climate and its mix of volcanoes and geysers, it is frequently described as the Land of Fire and Ice.
The Colline Metallifere are a mountain-hill group in the Tuscan Antiapennine, in central Italy. They occupy the central-western part of Tuscany, divided between the provinces of Livorno, Pisa, Siena and Grosseto.
Frassine is a village in Tuscany, central Italy. It is administratively a frazione of the comune of Monterotondo Marittimo, province of Grosseto, in the area of Colline Metallifere. At the time of the 2001 census its population amounted to 26.
Bagnore is a village in Tuscany, central Italy, administratively a frazione of the comune of Santa Fiora, province of Grosseto. At the time of the 2001 census its population amounted to 420.
Capalbio Scalo is a village in Tuscany, central Italy, administratively a frazione of the comune of Capalbio, province of Grosseto. At the time of the 2001 census its population was 461.
