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Puna Geothermal Venture
The Puna Geothermal Venture (PGV) is a geothermal energy power plant on the island of Hawaii, the largest island in the state of Hawaii. The plant was shut down shortly after the start of the May 2018 lower Puna eruption, and resumed power generation in November 2020. The eruption had caused lava to flow over a PGV power substation, a warehouse and at least three geothermal wells that had been preventatively quenched and capped when lava fountains erupted nearby, eventually also cutting off road access. PGV is the first and only commercial geothermal power plant in Hawaii. Constructed on a site adjacent to failed experimental wells drilled and operated by the Hawaii Geothermal Project in the 1970s and 80s, construction on the generating facility began in 1989 and was completed in 1993. Prior to the lava damage, the plant had an installed generating capacity of 38 MW from six production wells and five injection wells along Kīlauea’s East rift zone. Its output was sold to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Puna, Hawaii
Puna is one of the 9 districts of Hawaii County on the Island of Hawaii (Big Island; County of Hawaii). It is located on the windward side (east side) of the island and shares borders with South Hilo district in the north and Kaū district in the west.Hawaii County Data Book With a size of just under or 500 sq. miles. Puna is slightly smaller than the island of Kauai. Puna cropland supports , nurseries and |
Blowout (well Drilling)
A blowout is the uncontrolled release of crude oil and/or natural gas from an oil well or gas well after pressure control systems have failed.'All About Blowout', R. Westergaard, Norwegian Oil Review, 1987 Modern wells have blowout preventers intended to prevent such an occurrence. An accidental spark during a blowout can lead to a catastrophic oil or gas fire. Prior to the advent of pressure control equipment in the 1920s, the uncontrolled release of oil and gas from a well while drilling was common and was known as an oil gusher, gusher or wild well. History Gushers were an icon of oil exploration during the late 19th and early 20th centuries. During that era, the simple drilling techniques, such as cable-tool drilling, and the lack of blowout preventers meant that drillers could not control high-pressure reservoirs. When these high-pressure zones were breached, the oil or natural gas would travel up the well at a high rate, forcing out the drill string and creating a gus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diorite
Diorite ( ) is an intrusive igneous rock formed by the slow cooling underground of magma (molten rock) that has a moderate content of silica and a relatively low content of alkali metals. It is intermediate in composition between low-silica (mafic) gabbro and high-silica ( felsic) granite. Diorite is found in mountain-building belts (''orogens'') on the margins of continents. It has the same composition as the fine-grained volcanic rock, andesite, which is also common in orogens. Diorite has been used since prehistoric times as decorative stone. It was used by the Akkadian Empire of Sargon of Akkad for funerary sculptures, and by many later civilizations for sculptures and building stone. Description Diorite is an intrusive igneous rock composed principally of the silicate minerals plagioclase feldspar (typically andesine), biotite, hornblende, and sometimes pyroxene. The chemical composition of diorite is intermediate, between that of mafic gabbro and felsic grani ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hawaiian Islands
The Hawaiian Islands ( haw, Nā Mokupuni o Hawai‘i) are an archipelago of eight major islands, several atolls, and numerous smaller islets in the North Pacific Ocean, extending some from the island of Hawaii in the south to northernmost Kure Atoll. Formerly the group was known to Europeans and Americans as the Sandwich Islands, a name that James Cook chose in honor of the 4th Earl of Sandwich, the then First Lord of the Admiralty. Cook came across the islands by chance when crossing the Pacific Ocean on his Third Voyage in 1778, on board HMS ''Resolution''; he was later killed on the islands on a return visit. The contemporary name of the islands, dating from the 1840s, is derived from the name of the largest island, Hawaii Island. Hawaii sits on the Pacific Plate and is the only U.S. state that is not geographically connected to North America. It is part of the Polynesia subregion of Oceania. The state of Hawaii occupies the archipelago almost in its entirety (includin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Basalt
Basalt (; ) is an aphanite, aphanitic (fine-grained) extrusive igneous rock formed from the rapid cooling of low-viscosity lava rich in magnesium and iron (mafic lava) exposed at or very near the planetary surface, surface of a terrestrial planet, rocky planet or natural satellite, moon. More than 90% of all volcanic rock on Earth is basalt. Rapid-cooling, fine-grained basalt is chemically equivalent to slow-cooling, coarse-grained gabbro. The eruption of basalt lava is observed by geologists at about 20 volcanoes per year. Basalt is also an important rock type on other planetary bodies in the Solar System. For example, the bulk of the plains of volcanism on Venus, Venus, which cover ~80% of the surface, are basaltic; the lunar mare, lunar maria are plains of flood-basaltic lava flows; and basalt is a common rock on the surface of Mars. Molten basalt lava has a low viscosity due to its relatively low silica content (between 45% and 52%), resulting in rapidly moving lava flo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silica
Silicon dioxide, also known as silica, is an oxide of silicon with the chemical formula , most commonly found in nature as quartz and in various living organisms. In many parts of the world, silica is the major constituent of sand. Silica is one of the most complex and most abundant families of materials, existing as a compound of several minerals and as a synthetic product. Notable examples include fused quartz, fumed silica, silica gel, opal and aerogels. It is used in structural materials, microelectronics (as an Insulator (electricity), electrical insulator), and as components in the food and pharmaceutical industries. Structure In the majority of silicates, the silicon atom shows tetrahedral coordination geometry, tetrahedral coordination, with four oxygen atoms surrounding a central Si atomsee 3-D Unit Cell. Thus, SiO2 forms 3-dimensional network solids in which each silicon atom is covalently bonded in a tetrahedral manner to 4 oxygen atoms. In contrast, CO2 is a linear ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Granitic
A granitoid is a generic term for a diverse category of coarse-grained igneous rocks that consist predominantly of quartz, plagioclase, and alkali feldspar. Granitoids range from plagioclase-rich tonalites to alkali-rich syenites and from quartz-poor monzonites to quartz-rich quartzolites. As only two of the three defining mineral groups (quartz, plagioclase, and alkali feldspar) need to be present for the rock to be called a granitoid, foid-bearing rocks, which predominantly contain feldspars but no quartz, are also granitoids. The terms ''granite'' and ''granitic rock'' are often used interchangeably for granitoids; however, granite is just one particular type of granitoid. Granitoids are diverse; no classification system for granitoids can give a complete and unique characterization of the origin, compositional evolution, and geodynamic environment for the genesis of a granitoid. Accordingly, multiple granitoid classification systems have been developed such as those based ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dacitic
Dacite () is a volcanic rock formed by rapid solidification of lava that is high in silica and low in alkali metal oxides. It has a fine-grained (aphanitic) to porphyritic texture and is intermediate in composition between andesite and rhyolite. It is composed predominantly of plagioclase feldspar and quartz. Dacite is relatively common, occurring in many tectonic settings. It is associated with andesite and rhyolite as part of the subalkaline tholeiitic and calc-alkaline magma series. Composition Dacite consists mostly of plagioclase feldspar and quartz with biotite, hornblende, and pyroxene ( augite or enstatite). The quartz appears as rounded, corroded phenocrysts, or as an element of the ground-mass. The plagioclase in dacite ranges from oligoclase to andesine and labradorite. Sanidine occurs, although in small proportions, in some dacites, and when abundant gives rise to rocks that form transitions to the rhyolites. The relative proportions of feldspars and quartz ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pele (deity)
In Hawaiian religion, Pele (pronounced ) is the goddess of volcanoes and fire and the creator of the Hawaiian Islands. Often referred to as "Madame Pele" or "Tūtū Pele" as a sign of respect, she is a well-known deity within Hawaiian mythology and is notable for her contemporary presence and cultural influence as an enduring figure from ancient Hawaii. Epithets of the goddess include ''Pele-honua-mea'' ("Pele of the sacred land") and ''Ka wahine ʻai honua'' ("The earth-eating woman"). In different stories talking about the goddess Pele, she was born from the female spirit named Haumea. This spirit is important when talking about Hawaiʻi's gods as she descended from Papa, or Earth Mother, and Wakea, Sky Father, both descendants of the supreme beings. Pele is also known as "She who shapes the sacred land," known to be said in ancient Hawaiian chants. The first published stories of Pele were written by William Ellis. Legends Kīlauea is a currently active volcano that is locat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Demigod
A demigod or demigoddess is a part-human and part-divine offspring of a deity and a human, or a human or non-human creature that is accorded divine status after death, or someone who has attained the "divine spark" ( spiritual enlightenment). An immortal demigod(-dess) often has tutelary status and a religious cult following, while a mortal demigod(-dess) is one who has fallen or died, but is popular as a legendary hero in various polytheistic religions. Figuratively, it is used to describe a person whose talents or abilities are so superlative that they appear to approach being divine. Etymology The English term " demi-god" is a calque of the Latin word , "half-god". The Roman poet Ovid probably coined ''semideus'' to refer to less important gods, such as dryads. Compare the Greek ''hemitheos''. Classical In the ancient Greek and Roman world, the concept of a demigod did not have a consistent definition and associated terminology rarely appeared. The earliest recorded us ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Native Hawaiians
Native Hawaiians (also known as Indigenous Hawaiians, Kānaka Maoli, Aboriginal Hawaiians, First Hawaiians, or simply Hawaiians) ( haw, kānaka, , , and ), are the indigenous ethnic group of Polynesian people of the Hawaiian Islands. Hawaii was settled at least 800 years ago with the voyage of Polynesians from the Society Islands. The settlers gradually became detached from their original homeland and developed a distinct Hawaiian culture and identity in their new isolated home. That included the creation of new religious and cultural structures, mostly in response to the new living environment and the need for a structured belief system through which to pass on knowledge. Hence, the Hawaiian religion focuses on ways to live and relate to the land and instills a sense of communal living as well as a specialized spatial awareness. The Hawaiian Kingdom was formed in 1795, when Kamehameha the Great, of the independent island of Hawaiʻi, conquered the independent islands of Oʻ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
KHON2
KHON-TV (channel 2) is a television station in Honolulu, Hawaii, United States, serving the Hawaiian Islands as an affiliate of Fox and The CW. It is owned by Nexstar Media Group alongside MyNetworkTV affiliate KHII-TV (channel 9). Both stations share studios at the Haiwaiki Tower in downtown Honolulu, while KHON's main transmitter is also located downtown at the Century Center condominium/business complex. History As an NBC affiliate KHON-TV first signed on the air on December 15, 1952, as a primary NBC affiliate, KONA, occupying the channel 11 position. It also had a secondary affiliation with DuMont (which it later shared with KULA-TV, now KITV, after it signed on in 1954) until that network's demise in 1955. The station, which is Hawaii's second-oldest television station (behind KGMB, originally on channel 9, now on channel 5), was originally owned by Herbert Richards. Two years later in 1954, the ''Honolulu Advertiser'' purchased the station. On October 16, 1955, KONA c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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