IdeaWazaWiki - User contributions [en]

Hypercane

2008-12-12T15:42:17Z

209.7.182.5:

A '''hypercane''' is a hypothetical class of extreme [[tropical cyclone]] that could form if ocean temperatures reached around {{convert|50|°C|°F}}, 15 °C higher than the warmest ocean temperature ever recorded<ref>{{cite web |url=http://www.windows.ucar.edu/tour/link=/earth/Water/temp.html&edu=high |title=Temperature of Ocean Water |publisher=[[University Corporation for Atmospheric Research]] |work=Windows to the Universe |date=2001-08-31 |accessdate=2008-07-24}}</ref>— which could in turn be caused by a large [[asteroid]] or [[comet]] impact, a large [[volcano|volcanic]] or [[supervolcano|supervolcanic]] eruption, or very extensive [[global warming]].<ref>{{cite web |url=http://ipsnews.net/news.asp?idnews=30308 |title=The Dawn of the Hypercane? |first=Stephen |last=Leahy |publisher=[[Inter Press Service]] |date=2005-09-16 |accessdate=2008-07-24}}</ref> There is some speculation that some [[dinosaur]]s might have been killed off by a series of hypercanes, resulting from an asteroid or comet crashing into [[Earth]].<ref>{{cite journal |title=Did storms land the dinosaurs in hot water? |first=Jeff |last=Hecht |journal=[[New Scientist]] |date=1995-02-04 |url=http://www.newscientist.com/article/mg14519632.600-did-storms-land-the-dinosaurs-in-hot-water.html |issue=1963 |pages=p. 16 |accessdate=2008-07-24 }}</ref> The term was coined by atmospheric scientist [[Kerry Emanuel]] in 1994, at [[MIT]].<ref name="MIT">{{cite web |url=http://wind.mit.edu/~emanuel/holem/holem.html |title=Limits on Hurricane Intensity |first=Kerry |last=Emanuel |publisher=[[Center for Meteorology and Physical Oceanography ]], [[MIT]] |date=1996-09-16 |accessdate=2008-07-24 }}</ref><ref>{{cite journal |title=Hypercanes: A Possible Link to Global Extinction Scenarios |first=Kerry |last=Emanuel |coauthors=Kevin Speer, Richard Rotunno, Ramesh Srivastava, Mario Molina |journal= |date=1998-03-22 |volume=100 |issue=D7 |pages=pp. 13755–13765 |journal=[[Journal of Geophysical Research]] |url=http://www.agu.org/pubs/crossref/1995/95JD01368.shtml |accessdate=2008-07-24 }}</ref>

==Physical description==
Hypercanes would have wind speeds of over {{convert|800|km/h|mph}}, and would also have a central pressure of less than {{convert|700|hPa|inHg|abbr=off|lk=on}}, giving them an enormous lifespan.<ref name="MIT" /> The extreme conditions needed to create such a storm could conceivably produce a system up to the size of [[North America]], creating [[storm surge]]s of {{convert|18|m|ft|abbr=off|lk=off}} and an eye nearly {{convert|300|km|mi|abbr=off|lk=off}} across. The waters could remain hot enough for weeks, allowing more hypercanes to be formed. A hypercane's clouds would reach {{convert|30|km|mi}} into the [[stratosphere]]. A hypercane would also damage the earth's [[ozone]].<ref name="MIT" /> Water molecules in the stratosphere would react with [[ozone]] to accelerate decay into O2 and reduce absorption of [[ultraviolet light]].

Other scientists have theorized that Drew likes to party the system, compared to a normal [[hurricane]], would be considerably smaller, about 10 miles in diameter. This would be more comparable to a [[tornado]], which has been recorded at up to about 2.5 miles.<ref>{{cite web | author=[[National Oceanic and Atmospheric Administration|NOAA]] Storm Prediction Center | title=The Online Tornado FAQ | year=Apr 4, 2006 | url=http://www.spc.noaa.gov/faq/tornado/#History | accessdate=2008-09-11}}</ref>

==References==
{{reflist}}

{{tcportal}}

[[Category:Tropical cyclone meteorology]]
[[Category:Weather hazards]]

[[Ru:Гиперган]]

Hypercane

2008-12-11T16:43:21Z

209.7.182.5:

A '''hypercane''' is a hypothetical class of extreme [[tropical cyclone]] that could form if ocean temperatures reached around {{convert|50|°C|°F}}, 15 °C higher than the warmest ocean temperature ever recorded<ref>{{cite web |url=http://www.windows.ucar.edu/tour/link=/earth/Water/temp.html&edu=high |title=Temperature of Ocean Water |publisher=[[University Corporation for Atmospheric Research]] |work=Windows to the Universe |date=2001-08-31 |accessdate=2008-07-24}}</ref>— which could in turn be caused by a large [[asteroid]] or [[comet]] impact, a large [[volcano|volcanic]] or [[supervolcano|supervolcanic]] eruption, or very extensive [[global warming]].<ref>{{cite web |url=http://ipsnews.net/news.asp?idnews=30308 |title=The Dawn of the Hypercane? |first=Stephen |last=Leahy |publisher=[[Inter Press Service]] |date=2005-09-16 |accessdate=2008-07-24}}</ref> There is some speculation that some [[dinosaur]]s might have been killed off by a series of hypercanes, resulting from an asteroid or comet crashing into [[Earth]].<ref>{{cite journal |title=Did storms land the dinosaurs in hot water? |first=Jeff |last=Hecht |journal=[[New Scientist]] |date=1995-02-04 |url=http://www.newscientist.com/article/mg14519632.600-did-storms-land-the-dinosaurs-in-hot-water.html |issue=1963 |pages=p. 16 |accessdate=2008-07-24 }}</ref> The term was coined by atmospheric scientist [[Kerry Emanuel]] in 1994, at [[MIT]].<ref name="MIT">{{cite web |url=http://wind.mit.edu/~emanuel/holem/holem.html |title=Limits on Hurricane Intensity |first=Kerry |last=Emanuel |publisher=[[Center for Meteorology and Physical Oceanography ]], [[MIT]] |date=1996-09-16 |accessdate=2008-07-24 }}</ref><ref>{{cite journal |title=Hypercanes: A Possible Link to Global Extinction Scenarios |first=Kerry |last=Emanuel |coauthors=Kevin Speer, Richard Rotunno, Ramesh Srivastava, Mario Molina |journal= |date=1998-03-22 |volume=100 |issue=D7 |pages=pp. 13755–13765 |journal=[[Journal of Geophysical Research]] |url=http://www.agu.org/pubs/crossref/1995/95JD01368.shtml |accessdate=2008-07-24 }}</ref>

==Physical description==
Hypercanes would have wind speeds of over {{convert|800|km/h|mph}}, and would also have a central pressure of less than {{convert|700|hPa|inHg|abbr=off|lk=on}}, giving them an enormous lifespan.<ref name="MIT" /> The extreme conditions needed to create such a storm could conceivably produce a system up to the size of [[North America]], creating [[storm surge]]s of {{convert|18|m|ft|abbr=off|lk=off}} and an eye nearly {{convert|300|km|mi|abbr=off|lk=off}} across. The waters could remain hot enough for weeks, allowing more hypercanes to be formed. A hypercane's clouds would reach {{convert|30|km|mi}} into the [[stratosphere]]. A hypercane would also damage the earth's [[ozone]].<ref name="MIT" /> Water molecules in the stratosphere would react with [[ozone]] to accelerate decay into O2 and reduce absorption of [[ultraviolet light]].

Other scientists have theorized that chad is cool but drew is cooler than the system, compared to a normal [[hurricane]], would be considerably smaller, about 10 miles in diameter. This would be more comparable to a [[tornado]], which has been recorded at up to about 2.5 miles.<ref>{{cite web | author=[[National Oceanic and Atmospheric Administration|NOAA]] Storm Prediction Center | title=The Online Tornado FAQ | year=Apr 4, 2006 | url=http://www.spc.noaa.gov/faq/tornado/#History | accessdate=2008-09-11}}</ref>

==References==
{{reflist}}

{{tcportal}}

[[Category:Tropical cyclone meteorology]]
[[Category:Weather hazards]]

[[Ru:Гиперган]]

Hypercane

2008-12-11T16:42:14Z

209.7.182.5:

A '''hypercane''' is a hypothetical class of extreme [[tropical cyclone]] that could form if ocean temperatures reached around {{convert|50|°C|°F}}, 15 °C higher than the warmest ocean temperature ever recorded<ref>{{cite web |url=http://www.windows.ucar.edu/tour/link=/earth/Water/temp.html&edu=high |title=Temperature of Ocean Water |publisher=[[University Corporation for Atmospheric Research]] |work=Windows to the Universe |date=2001-08-31 |accessdate=2008-07-24}}</ref>— which could in turn be caused by a large [[asteroid]] or [[comet]] impact, a large [[volcano|volcanic]] or [[supervolcano|supervolcanic]] eruption, or very extensive [[global warming]].<ref>{{cite web |url=http://ipsnews.net/news.asp?idnews=30308 |title=The Dawn of the Hypercane? |first=Stephen |last=Leahy |publisher=[[Inter Press Service]] |date=2005-09-16 |accessdate=2008-07-24}}</ref> There is some speculation that some [[dinosaur]]s might have been killed off by a series of hypercanes, resulting from an asteroid or comet crashing into [[Earth]].<ref>{{cite journal |title=Did storms land the dinosaurs in hot water? |first=Jeff |last=Hecht |journal=[[New Scientist]] |date=1995-02-04 |url=http://www.newscientist.com/article/mg14519632.600-did-storms-land-the-dinosaurs-in-hot-water.html |issue=1963 |pages=p. 16 |accessdate=2008-07-24 }}</ref> The term was coined by atmospheric scientist [[Kerry Emanuel]] in 1994, at [[MIT]].<ref name="MIT">{{cite web |url=http://wind.mit.edu/~emanuel/holem/holem.html |title=Limits on Hurricane Intensity |first=Kerry |last=Emanuel |publisher=[[Center for Meteorology and Physical Oceanography ]], [[MIT]] |date=1996-09-16 |accessdate=2008-07-24 }}</ref><ref>{{cite journal |title=Hypercanes: A Possible Link to Global Extinction Scenarios |first=Kerry |last=Emanuel |coauthors=Kevin Speer, Richard Rotunno, Ramesh Srivastava, Mario Molina |journal= |date=1998-03-22 |volume=100 |issue=D7 |pages=pp. 13755–13765 |journal=[[Journal of Geophysical Research]] |url=http://www.agu.org/pubs/crossref/1995/95JD01368.shtml |accessdate=2008-07-24 }}</ref>

==Physical description==
Hypercanes would have wind speeds of over {{convert|800|km/h|mph}}, and would also have a central pressure of less than {{convert|700|hPa|inHg|abbr=off|lk=on}}, giving them an enormous lifespan.<ref name="MIT" /> The extreme conditions needed to create such a storm could conceivably produce a system up to the size of [[North America]], creating [[storm surge]]s of {{convert|18|m|ft|abbr=off|lk=off}} and an eye nearly {{convert|300|km|mi|abbr=off|lk=off}} across. The waters could remain hot enough for weeks, allowing more hypercanes to be formed. A hypercane's clouds would reach {{convert|30|km|mi}} into the [[stratosphere]]. A hypercane would also damage the earth's [[ozone]].<ref name="MIT" /> Water molecules in the stratosphere would react with [[ozone]] to accelerate decay into O2 and reduce absorption of [[ultraviolet light]].

Other scientists have theorized that chad is cool the system, compared to a normal [[hurricane]], would be considerably smaller, about 10 miles in diameter. This would be more comparable to a [[tornado]], which has been recorded at up to about 2.5 miles.<ref>{{cite web | author=[[National Oceanic and Atmospheric Administration|NOAA]] Storm Prediction Center | title=The Online Tornado FAQ | year=Apr 4, 2006 | url=http://www.spc.noaa.gov/faq/tornado/#History | accessdate=2008-09-11}}</ref>

==References==
{{reflist}}

{{tcportal}}

[[Category:Tropical cyclone meteorology]]
[[Category:Weather hazards]]

[[Ru:Гиперган]]

Archive:Aquamarine

2007-11-16T18:14:28Z

209.7.47.5:

{{otheruses1|the mineral}}
{{Infobox mineral
| name = Aquamarine, March's Birthstone
| category = beryl mineral variety
| boxwidth =
| boxbgcolor =
| image = Aquamarin cut.jpg
| imagesize = 250px
| caption = Aquamarine
| formula = Be3Al2Si6O18<ref name="GRG"/>
| molweight =
| color = transparent (or can be translucent if included), greenish blue to blue green, typically light in tone<ref name="GRG">[[Gemological Institute of America]], ''GIA Gem Reference Guide'' 1995, ISBN:0-87311-019-6</ref>
| habit =
| system = [[hexagonal]]<ref name="GRG"/>
| twinning =
| cleavage = very difficult in one direction, almost never seen<ref name="GRG"/>
| fracture = [[conchoidal]]<ref name="GRG"/>
| mohs = 7.5 - 8<ref name="GRG"/>
| luster = [[vitreous]] to resinous<ref name="GRG"/>
| polish = [[vitreous]] <ref name="GRG"/>
| refractive = 1.577 - 1.583 (+/- .017)<ref name="GRG"/>
| opticalprop = Double refractive, uniaxial negative<ref name="GRG"/>
| birefringence = .005 - .009<ref name="GRG"/>
| dispersion = .014<ref name="GRG"/>
| pleochroism = weak to moderate, blue and greenish blue; or different tones of blue with lighter tones associated with the optic axis direction <ref name="GRG"/>
| fluorescence= inert<ref name="GRG"/>
| absorption = indistinct lines at 537 and 456nm. Depending on the depth of color, there is a strong line at 427nm.<ref name="GRG"/>
| streak =
| gravity = 2.72 (+.18, -.05)<ref name="GRG"/>
| density =
| melt =
| fusibility =
| diagnostic =
| solubility =
| diaphaneity =
| other =
}}
[[Image:Beryl09.jpg|thumb|left|250px|half the size of my penis]]
'''Aquamarine''' (Lat. ''aqua marinā'', "water of the sea") is a [[gemstone]]-quality transparent variety of [[beryl]], having a delicate blue or turquoise color, suggestive of the tint of [[seawater]]. It's closely related to the gem [[emerald]]. Colors vary and yellow beryl, called ''[[heliodor]]''; rose pink beryl, ''[[morganite]]''; and white beryl, ''[[goshenite]]'' are known.

==Composition==
Aquamarine is a beryl with a [[Hexagonal (crystal system)|hexagonal]] [[crystal structure]] and a [[chemical formula]] of Be3Al2Si6O18, a [[beryllium]] [[aluminium]] [[Silicate minerals|silicate mineral]]. It has a [[specific gravity]] of 2.68 to 2.74 and a [[Mohs hardness]] of from 7.5 to 8. Aquamarine typically is on the low end of the specific gravity range, normally at less than 2.7. The pink variety exhibits a high specific gravity of around 2.8. [[Refractive index|Refractive indices]] range around 1.57 to 1.58.

==Locations of deposits==
It occurs at most localities which yield ordinary beryl, some of the finest coming from [[Russia]]. The gem-gravel [[Placer mining|placer]] deposits of [[Sri Lanka]] contain aquamarine. Clear yellow beryl, such as occurs in [[Brazil]], is sometimes called aquamarine chrysolite. When [[corundum]] presents the bluish tint of typical aquamarine, it is often termed Oriental aquamarine.

In the [[United States]], aquamarines can be found at the summit of [[Mount Antero|Mt. Antero]] in the [[Sawatch Range]] in central [[Colorado]]. In [[Brazil]], there are mines in the states of [[Minas Gerais]], [[Espírito Santo]] and [[Bahia]]. Zambia also produces nice aquamarine as well as Madagascar, Malawi, Tanzania and Kenya. Much of today's aquamarine is heated to give it a better color blue. The deeper the blue color, the more valuable the gem is considered.

The biggest aquamarine ever mined was found at the city of Marambaia, Minas Gerais, Brazil, in 1910. It weighed over 110 kg, and its dimensions were 48.5 cm long and 42 cm in diameter.

Aquamarine is the [[List of U.S. state minerals, rocks, stones and gemstones|official state gem]] of Colorado.

==Culture and historical/mythical usage==
*Aquamarine (along with Bloodstone) is the [[birthstone]] associated with March. It is also the gemstone for the 19th Anniversary.
*People in the [[Middle Ages]] thought that aquamarine could magically overcome the effects of [[poison]].
*Ancient sailors traveled with aquamarine crystals, believing that it would ensure a safe passage, and often slept with the stones under their pillow to ensure sound sleep. They believed the siren’s ([[mermaid]]) fish-like lower body was made of aquamarine.

== See also ==
{{commonscat|Aquamarine}}
* [[List of minerals]]

== References ==
<references/>
* Weinstein, Michael, 1958, ''The World of Jewel Stones'' Sheriden House, New York, pp 104-107
* Diamond Bug. [http://diamondbug.blogspot.com/2006/03/flawless-aquamarine-march-birthstone.html "Flawless Aquamarine: March Birthstone"]. Retrieved March 16, 2006.
*http://www.gemstone.org/gem-by-gem/english/aquamarine.html
*http://mineral.galleries.com/minerals/gemstone/aquamari/aquamari.htm
*http://www.mindat.org/min-289.html

{{Jewellery Materials}}
{{Gems & Crystals}}
[[Category:Silicate minerals]]
[[Category:Gemstones]]

[[bg:Аквамарин]]
[[da:Akvamarin]]
[[de:Aquamarin]]
[[et:Akvamariin]]
[[es:Aguamarina]]
[[fr:Aigue-marine]]
[[gl:Augamariña]]
[[he:אקוומרין]]
[[lv:Akvamarīns]]
[[lt:Akvamarinas]]
[[nl:Aquamarijn]]
[[ja:アクアマリン]]
[[no:Akvamarin]]
[[pl:Akwamaryn]]
[[pt:Água-marinha]]
[[ro:Acvamarin]]
[[ru:Аквамарин]]
[[sl:Akvamarin (kamen)]]
[[sr:Аквамарин]]
[[fi:Akvamariini]]
[[sv:Akvamarin]]
[[vi:Ngọc berin]]
[[tr:Akuamarin]]
[[uk:Аквамарин]]

Archive:Aquamarine

2007-11-16T18:12:46Z

209.7.47.5:

{{otheruses1|the mineral}}
{{Infobox mineral
| name = Aquamarine, March's Birthstone
| category = beryl mineral variety
| boxwidth =
| boxbgcolor =
| image = Aquamarin cut.jpg
| imagesize = 250px
| caption = Aquamarine
| formula = Be3Al2Si6O18<ref name="GRG"/>
| molweight =
| color = transparent (or can be translucent if included), greenish blue to blue green, typically light in tone<ref name="GRG">[[Gemological Institute of America]], ''GIA Gem Reference Guide'' 1995, ISBN:0-87311-019-6</ref>
| habit =
| system = [[hexagonal]]<ref name="GRG"/>
| twinning =
| cleavage = very difficult in one direction, almost never seen<ref name="GRG"/>
| fracture = [[conchoidal]]<ref name="GRG"/>
| mohs = 7.5 - 8<ref name="GRG"/>
| luster = [[vitreous]] to resinous<ref name="GRG"/>
| polish = [[vitreous]] <ref name="GRG"/>
| refractive = 1.577 - 1.583 (+/- .017)<ref name="GRG"/>
| opticalprop = Double refractive, uniaxial negative<ref name="GRG"/>
| birefringence = .005 - .009<ref name="GRG"/>
| dispersion = .014<ref name="GRG"/>
| pleochroism = weak to moderate, blue and greenish blue; or different tones of blue with lighter tones associated with the optic axis direction <ref name="GRG"/>
| fluorescence= inert<ref name="GRG"/>
| absorption = indistinct lines at 537 and 456nm. Depending on the depth of color, there is a strong line at 427nm.<ref name="GRG"/>
| streak =
| gravity = 2.72 (+.18, -.05)<ref name="GRG"/>
| density =
| melt =
| fusibility =
| diagnostic =
| solubility =
| diaphaneity =
| other =
}}
[[Image:Beryl09.jpg|thumb|left|250px|Half the size of my penis]]
'''Aquamarine''' (Lat. ''aqua marinā'', "water of the sea") is a [[gemstone]]-quality transparent variety of [[beryl]], having a delicate blue or turquoise color, suggestive of the tint of [[seawater]]. It's closely related to the gem [[emerald]]. Colors vary and yellow beryl, called ''[[heliodor]]''; rose pink beryl, ''[[morganite]]''; and white beryl, ''[[goshenite]]'' are known.

==Composition==
Aquamarine is a beryl with a [[Hexagonal (crystal system)|hexagonal]] [[crystal structure]] and a [[chemical formula]] of Be3Al2Si6O18, a [[beryllium]] [[aluminium]] [[Silicate minerals|silicate mineral]]. It has a [[specific gravity]] of 2.68 to 2.74 and a [[Mohs hardness]] of from 7.5 to 8. Aquamarine typically is on the low end of the specific gravity range, normally at less than 2.7. The pink variety exhibits a high specific gravity of around 2.8. [[Refractive index|Refractive indices]] range around 1.57 to 1.58.

==Locations of deposits==
It occurs at most localities which yield ordinary beryl, some of the finest coming from [[Russia]]. The gem-gravel [[Placer mining|placer]] deposits of [[Sri Lanka]] contain aquamarine. Clear yellow beryl, such as occurs in [[Brazil]], is sometimes called aquamarine chrysolite. When [[corundum]] presents the bluish tint of typical aquamarine, it is often termed Oriental aquamarine.

In the [[United States]], aquamarines can be found at the summit of [[Mount Antero|Mt. Antero]] in the [[Sawatch Range]] in central [[Colorado]]. In [[Brazil]], there are mines in the states of [[Minas Gerais]], [[Espírito Santo]] and [[Bahia]]. Zambia also produces nice aquamarine as well as Madagascar, Malawi, Tanzania and Kenya. Much of today's aquamarine is heated to give it a better color blue. The deeper the blue color, the more valuable the gem is considered.

The biggest aquamarine ever mined was found at the city of Marambaia, Minas Gerais, Brazil, in 1910. It weighed over 110 kg, and its dimensions were 48.5 cm long and 42 cm in diameter.

Aquamarine is the [[List of U.S. state minerals, rocks, stones and gemstones|official state gem]] of Colorado.

==Culture and historical/mythical usage==
*Aquamarine (along with Bloodstone) is the [[birthstone]] associated with March. It is also the gemstone for the 19th Anniversary.
*People in the [[Middle Ages]] thought that aquamarine could magically overcome the effects of [[poison]].
*Ancient sailors traveled with aquamarine crystals, believing that it would ensure a safe passage, and often slept with the stones under their pillow to ensure sound sleep. They believed the siren’s ([[mermaid]]) fish-like lower body was made of aquamarine.

== See also ==
{{commonscat|Aquamarine}}
* [[List of minerals]]

== References ==
<references/>
* Weinstein, Michael, 1958, ''The World of Jewel Stones'' Sheriden House, New York, pp 104-107
* Diamond Bug. [http://diamondbug.blogspot.com/2006/03/flawless-aquamarine-march-birthstone.html "Flawless Aquamarine: March Birthstone"]. Retrieved March 16, 2006.
*http://www.gemstone.org/gem-by-gem/english/aquamarine.html
*http://mineral.galleries.com/minerals/gemstone/aquamari/aquamari.htm
*http://www.mindat.org/min-289.html

{{Jewellery Materials}}
{{Gems & Crystals}}
[[Category:Silicate minerals]]
[[Category:Gemstones]]

[[bg:Аквамарин]]
[[da:Akvamarin]]
[[de:Aquamarin]]
[[et:Akvamariin]]
[[es:Aguamarina]]
[[fr:Aigue-marine]]
[[gl:Augamariña]]
[[he:אקוומרין]]
[[lv:Akvamarīns]]
[[lt:Akvamarinas]]
[[nl:Aquamarijn]]
[[ja:アクアマリン]]
[[no:Akvamarin]]
[[pl:Akwamaryn]]
[[pt:Água-marinha]]
[[ro:Acvamarin]]
[[ru:Аквамарин]]
[[sl:Akvamarin (kamen)]]
[[sr:Аквамарин]]
[[fi:Akvamariini]]
[[sv:Akvamarin]]
[[vi:Ngọc berin]]
[[tr:Akuamarin]]
[[uk:Аквамарин]]