OLYMPUS MONS / PLANÈTE MARS PHOTOGRAPHIÉ PAR NASA VIKING ORBITER 1

NASA VIKING ORBITER  (1975-1982)
Olympus Mons (21, 229 mètres soit 21, 2 km d'altitude)
Planète Mars (Voie Lactée)

D'après une photographie prise en 1979, à 5000 km de hauteur, retouchée par IA en 2020. 

Photo originale prise par la sonde NASA Viking Orbiter 1 en 1979.

Le  volcan
Olympus Mons (21, 2 km)  nom latin pour « mont Olympe », est un volcan bouclier de la planète Mars situé dans les quadrangles d'Amazonis et de Tharsis. C'est le plus haut relief connu du système solaire, culminant à 21 229 mètres au-dessus du niveau de référence martien selon les mesures très précises de l'altimètre laser de Mars Global Surveyor (ancienne mesure 22 500 mètres). Son impressionnant diamètre est de 648 km, c'est à dire qu'il couvrirait la plus grande partie du territoire français et Suisse s'étendant de Bordeaux à Genève et de Paris à Montélimar !
Il se trouve sur la bordure nord-ouest du renflement de Tharsis, immense soulèvement de la surface martienne, centré sur Noctis Labyrinthus et Syria Planum, dont l'extension occidentale concentre une douzaine de volcans majeurs..
L'édifice central s'élève à  deux fois et demie la hauteur de l'Everest par rapport au niveau de la mer et plus du double de celle du Mauna Kea (Hawaï) par rapport à sa base  Il possède à son sommet une caldeira complexe d'environ 80 × 60 kilomètres résultant de la coalescence d'au moins six cratères enchevêtrés, attestant de l'histoire mouvementée de la caldeira avec notamment la présence de grabens résultant de l'effondrement de la surface dans une faille.
Il est entouré d'une falaise formant un escarpement continu sur toute sa circonférence, d'une hauteur de 2 à 6 kilomètres. Au-delà de cet escarpement se trouve une zone souvent appelée « l'auréole » du volcan, constituée de crêtes et de grands blocs s'étendant jusqu'à un millier de kilomètres de la caldeira. Cela met en évidence l'expansion et la modification de la surface liées à l'activité glaciaire.
L'inclinaison des pentes du volcan est voisine de 5 degrés en moyenne, atteignant 30 degrés au niveau de l'escarpement périphérique.
À proximité de la caldeira se trouvent deux cratères d'impact. À une vingtaine de kilomètres au sud, le cratère Pangboche a un diamètre de 10,4 kilomètres. Il a été nommé par l'Union astronomique internationale en 2006 d'après une localité du Népal située à vingt kilomètres du sommet de l'Everest. C'est sur le rebord ouest de ce cratère que se trouve le point le plus haut d'Olympus Mons, à 21 229 mètres au-dessus du niveau de référence. Le cratère Karzok, situé à une quarantaine de kilomètres à l'est de la caldeira, a un diamètre de 15,6 kilomètres. Il a été nommé d'après une localité du Cachemire indien. D'autres cratères d'impact sont également visibles sur les flancs du volcan.
L'escarpement et l'auréole sont tous deux mal compris. La falaise résulterait de glissements de terrain, et l'auréole proviendrait des matériaux entassés au bas de ces glissements. Les coulées de lave s'étendent au-delà de l'escarpement. L'escarpement qui entoure la montagne à sa base aurait été formé par des glissements de terrain induits par une fonte massive du permafrost11 ou par un soulèvement tectonique. Les structures linéaires en forme de crêtes présentes autour du volcan au-delà de l'escarpement seraient, quant à elles, des dykes mis en place après les dernières coulées de lave ayant atteint la base du volcan. Son premier nom, Nix Olympica, en français « Neige de l'Olympe », lui avait été donné par l'astronome italien Giovanni Schiaparelli (1835-1910). 

La mission
NASA Viking Orbiter 1 était le premier des deux engins spatiaux (avec Viking 2) envoyés sur Mars dans le cadre du programme Viking de la NASA. Le 20 juillet 1976, il est devenu le deuxième vaisseau spatial à atterrir en douceur sur Mars, et le premier à réussir sa mission. (Le premier vaisseau spatial à atterrir en douceur sur Mars était le Mars 3 de l'Union soviétique le 2 décembre 1971, qui a cessé de transmettre après 14,5 secondes.) Viking 1 détenait le record de la plus longue mission de surface de Mars de 2307 jours (plus de 6 1⁄ 4 ans) ou 2245 jours solaires martiens, jusqu'à ce que ce record soit battu par le rover Opportunity le 19 mai 2010. Après le lancement à l'aide d'un lanceur Titan/Centaur le 20 août 1975 et une croisière de 11 mois vers Mars, l'orbiteur a commencé à renvoyer des images globales de Mars environ 5 jours avant l'insertion en orbite. L'orbiteur Viking 1 a été inséré dans l'orbite de Mars le 19 juin 1976 et ajusté à une orbite de certification de site de 1513 x 33 000 km, 24,66 h le 21 juin. L'atterrissage sur Mars était prévu pour le 4 juillet 1976, le bicentenaire des États-Unis, mais l'imagerie du site d'atterrissage principal a montré qu'il était trop difficile pour un atterrissage en toute sécurité. L'atterrissage a été retardé jusqu'à ce qu'un site plus sûr soit trouvé et a eu lieu à la place le 20 juillet, le septième anniversaire de l'alunissage d'Apollo 11. L'atterrisseur s'est séparé de l'orbiteur à 08:51 UTC et a atterri à Chryse Planitia à 11:53:06 UTC. C'était la première tentative des États-Unis d'atterrir sur Mars.
Les instruments de l'orbiteur se composaient de deux caméras vidicon pour l'imagerie (VIS), d'un spectromètre infrarouge pour la cartographie de la vapeur d'eau (MAWD) et de radiomètres infrarouges pour la cartographie thermique (IRTM). La mission principale de l'orbiteur s'est terminée au début de la conjonction solaire le 5 novembre 1976.
La mission prolongée a commencé le 14 décembre 1976, après la conjonction solaire. Les opérations comprenaient des approches rapprochées de Phobos en février 1977. Le périastre a été réduit à 300 km le 11 mars 1977. Des ajustements mineurs d'orbite ont été effectués occasionnellement au cours de la mission, principalement pour modifier le taux de marche - le taux auquel la longitude aréocentrique changé à chaque orbite, et le périastre a été porté à 357 km le 20 juillet 1979. Le 7 août 1980, Viking 1 Orbiter manquait de gaz de contrôle d'attitude et son orbite a été portée de 357 × 33943 km à 320 × 56000 km pour éviter l'impact avec Mars et une éventuelle contamination jusqu'en 2019. Les opérations ont pris fin le 17 août 1980, après 1485 orbites. Une analyse de 2009 a conclu que, même si la possibilité que Viking 1 ait eu un impact sur Mars ne pouvait être exclue, il était très probablement toujours en orbite. Plus de 57 000 images ont été renvoyées sur Terre.

________________________________________________
2023 - Gravir les montagnes en peinture...
Un blog de Francis Rousseau

 

PICO DEL TEIDE SKETCHED BY ALEXANDER VON HUMBOLDT

 

ALEXANDER VON HUMBOLDT (1769-1859)
Pico del Teide (3, 718 m -12, 198 ft)
Tenerife - Canari Islands - Spain

 In  "Intérieur du Cratère du Pic de Teneriffe " Dessin, Alexander von Humboldt

The mountain
Pico del Teide (3,718m - 12,198 ft) (« Teide Peak") is a volcano on Tenerife in the Canary Islands, Spain. Before the 1495 Spanish colonization of Tenerife, the native Guanches called the volcano Echeyde, which in their legends referred to a powerful figure leaving the volcano, which could turn into hell. El Pico del Teide is the modern Spanish name.
Its summit is the highest point in Spain and the highest point above sea level in the islands of the Atlantic. If measured from its base on the ocean floor, it is at 7,500 m-24,600 ft the third highest volcano on a volcanic ocean island in the world after Mauna Kea and Mauna Loa in Hawaii. Its elevation makes Tenerife the tenth highest island in the world. It remains active: its most recent eruption occurred in 1909 from the El Chinyero vent on the northwestern Santiago rift.
Historical volcanic activity on the island is associated with vents on the Santiago or northwest rift (Boca Cangrejo in 1492, Montañas Negras in 1706, Narices del Teide or Chahorra in 1798 and El Chinyero in 1909) and the Cordillera Dorsal or northeast rift (Fasnia in 1704, Siete Fuentes and Arafo in 1705). The 1706 Montañas Negras eruption destroyed the town and principal port of Garachico, as well as several smaller villages.
In 1492, Christopher Columbus reported seeing "a great fire in the Orotava Valley" as he sailed past Tenerife on his voyage to discover the New World. This was interpreted as indicating that he had witnessed an eruption there. Radiometric dating of possible lavas indicates that in 1492 no eruption occurred in the Orotava Valley, but one did occur from the Boca Cangrejo vent.
The last summit eruption from Teide occurred about the year 850 CE, and this eruption produced the "Lavas Negras" that cover much of the flanks of the volcano.
About 150,000 years ago, a much larger explosive eruption occurred, probably of Volcanic Explosivity Index 5.
The United Nations Committee for Disaster Mitigation designated Teide a Decade Volcano because of its history of destructive eruptions and its proximity to several large towns, of which the closest are Garachico, Icod de los Vinos and Puerto de la Cruz. Teide, Pico Viejo and Montaсa Blanca form the Central Volcanic Complex of Tenerife.
In a publication of 1626, Sir Edmund Scory, who probably stayed on the island in the first decades of the 17th century, gives a description of Teide, in which he notes the suitable paths to the top and the effects the considerable height causes to the travellers, indicating that the volcano had been accessed via different routes before the 17th century. In 1715 the English traveler J. Edens and his party made the ascent and reported their observations in the journal of the Royal Society in London.
After the Enlightenment, most of the expeditions that went to East Africa and the Pacific had Teide as one of the most rewarding targets. The expedition of Lord George Macartney, George Staunton and John Barrow in 1792 almost ended in tragedy, as a major snowstorm and rain swept over them and they failed to reach the peak of Teide, just barely getting past Montaña Blanca.
During an expedition to Kilimanjaro, the German adventurer Hans Heinrich Joseph Meyer visited Teide in 1894 to observe ice conditions on the volcano. He described the two mountains as "two kings, one rising in the ocean and the other in the desert and steppes"
The volcano and its surroundings comprise Teide National Park, which has an area of 18,900 hectares (47,000 acres) and was named a World Heritage Site by UNESCO on June 28, 2007. Teide is the most visited natural wonder of Spain, the most visited national park in Spain and Europe and – by 2015 – the eighth most visited in the world, with some 3 million visitors yearly. A major international astronomical observatory is located on the slopes of the mountain.

The cartographer
Friedrich Wilhelm Heinrich Alexander von Humboldt was a Prussian geographer, naturalist, explorer, and influential proponent of Romantic philosophy and science. He was the younger brother of the Prussian minister, philosopher, and linguist Wilhelm von Humboldt (1767–1835). Humboldt's quantitative work on botanical geography laid the foundation for the field of biogeography. Humboldt's advocacy of long-term systematic geophysical measurement laid the foundation for modern geomagnetic and meteorological monitoring.
Between 1799 and 1804, Humboldt travelled extensively in Latin America, exploring and describing it for the first time from a modern scientific point of view. His description of the journey was written up and published in an enormous set of volumes over 21 years. Humboldt was one of the first people to propose that the lands bordering the Atlantic Ocean were once joined (South America and Africa in particular). Humboldt resurrected the use of the word cosmos from the ancient Greek and assigned it to his multi-volume treatise, Kosmos, in which he sought to unify diverse branches of scientific knowledge and culture. This important work also motivated a holistic perception of the universe as one interacting entity.
On their way back to Europe from Mexico on their way to the United States, Humboldt and his fellow scientist Aimé Bonpland stopped in Cuba for a While. After their first stay in Cuba of three months they returned the mainland at Cartagena de Indias (now in Colombia), a major center of trade in northern South America. Ascending the swollen stream of the Magdalena River to Honda and arrived in Bogotá on July 6, 1801 where they met Spanish botanist José Celestino Mutis, the head of the Royal Botanical Expedition to New Granada, staying there until September 8, 1801. Mutis was generous with his time and gave Humboldt access to the huge pictorial record he had compiled since 1783. Humboldt had hopes of connecting with the French sailing expedition of Baudin, now finally underway, so Bonpland and Humboldt hurried to Ecuador. They crossed the frozen ridges of the Cordillera Real, they reached Quito on 6 January 1802, after a tedious and difficult journey.
Their stay in Ecuador was marked by the ascent of Pichincha and their climb of Chimborazo, where Humboldt and his party reached an altitude of 19,286 feet (5,878 m). This was a world record at the time, but a thousand feet short of the summit. Humboldt's journey concluded with an expedition to the sources of the Amazon en route for Lima, Peru.
At Callao, the main port for Peru, Humboldt observed the transit of Mercury. On 9 November and studied the fertilizing properties of guano, rich in nitrogen, the subsequent introduction of which into Europe was due mainly to his writings.

___________________________________________
2022 - Wandering Vertexes...
by Francis Rousseau

AEOLIS MONS OR MOUNT SHARP BY NASA CURIOSITY MISSION

 

NASA CURIOSITY MISSION (since 2012)
Aeolis Mons or Mount Sharp (5, 500 m - 18, 000 ft)
Mars

From "At the base of Aeolis Mons on Mars ", photo, 23 August 2012

The mountain
Aeolis Mons (5, 500 m - 18, 000 ft) also called Mount Sharp is a mountain on the surface of the planet Mars. It forms the central peak within Gale crater and is located around 5.08°S 137.85°E, rising 5.5 km (18,000 ft) high from the valley floor. Aeolis Mons is about the same height as Mons Huygens, the tallest lunar mountain, and taller than Mons Hadley visited by Apollo 15. The tallest mountain known in the Solar System is in Rheasilvia crater on the asteroid Vesta, which contains a central mound that rises 22 km or 22.000 m - 14 mi or 72,000 ft high.
Olympus Mons on Mars is nearly the same height, at 21.9 km (13.6 mi; 72,000 ft) high.
In comparison, Mount Everest / Chomolunga rises to 8.8 km -29,000 ft altitude above sea level, but is only 4.6 km - 15,000 ft base-to-peak. Africa's Mount Kilimanjaro is about 5.9 km - 19,000 ft altitude above sea level also 4.6 km base-to-peak. America's Denali, also known as Mount McKinley, has a base-to-peak of 5.5 km -18,000 ft. The Franco-Italian Mont Blanc/Monte Bianco is 4.8 km -16,000 ft in altitude above sea level. Mount Fuji, which overlooks Tokyo, Japan, is about 3.8 km -12,000 ft altitude. Compared to the Andes, Aeolis Mons would rank outside the hundred tallest peaks, being roughly the same height as Argentina's Cerro Pajonal; the peak is higher than any above sea level in Oceania, but base-to peak it is considerably shorter than Hawaii's Mauna Kea and its neighbors.
Discovered in the 1970s by NAS, the mountain remained nameless for perhaps 40 years. When it became a likely landing site, it was given various labels; for example, in 2010 a NASA photo caption called it "Gale crater mound". In March 2012, NASA unofficially named it "Mount Sharp", for American geologist Robert P. Sharp. The International Astronomical Union, which is responsible for planetary nomenclature for its participants, names large Martian mountains after the Classical albedo feature in which it is located, not for people. In May 2012 the IAU thus named the mountain Aeolis Mons, and gave the name Aeolis Palus to the crater floor plain between the northern wall of Gale and the northern foothills of the mountain. Despite the official name, NASA and the ESA continue to refer to the mountain as "Mount Sharp" in press conferences and press releases
Aeolis is the ancient name of the Izmir region in western Turkey.

The NASA mission
On August 6, 2012, Curiosity (the Mars Science Laboratory rover) landed in "Yellowknife" Quad of Aeolis Palus, next to the mountain. NASA named the landing site Bradbury Landing on August 22, 2012. Aeolis Mons is a primary goal for scientific study.
On June 5, 2013, NASA announced that Curiosity would begin a 8 km (5.0 mi) journey from the Glenelg area to the base of Aeolis Mons.
On November 13, 2013, NASA announced that an entryway Curiosity would traverse on its way to Aeolis Mons was to be named "Murray Buttes", in honor of planetary scientist Bruce C. Murray (1931–2013). The trip was expected to take about a year and would include stops along the way to study the local terrain.
On September 11, 2014, NASA announced that the Curiosity rover had reached Aeolis Mons, the rover mission's long-term prime destination.
On October 5, 2015, possible recurrent slope lineae, wet brine flows, were reported on Mount Sharp near Curiosity.
As of January 20, 2017, Curiosity has been on the planet Mars for 1585 sols (1628 days) since landing on August 6, 2012. 

___________________________________________
2022 - Wandering Vertexes...
by Francis Rousseau

MAUNA KEA PAINTED BY CHARLES FURNEAUX

CHARLES FURNEAUX (1835-1913

Mauna Kea   (4,207 m -13,802 ft) 

United States of America (Hawaii)

In  The village of Hilo and Mauna Kea,  oil on canvas, 1880s, Honolulu Art Museum

The mountain 
Mauna Kea (4,207 m -13,802 ft) is a dormant volcano on the island of Hawaii. Its peak is the highest point in the state of Hawaii making the island of Hawaii the second highest island in the world.
Most of the mountain is underwater : when measured from its oceanic base, Mauna Kea is over 10,000 m (33,000 ft) tall and is the tallest mountain on Earth.
Mauna Kea is about a million years old, and has thus passed the most active shield stage of life hundreds of thousands of years ago. In its current post-shield state, its lava is more viscous, resulting in a steeper profile. Late volcanism has also given it a much rougher appearance than its neighboring volcanoes; contributing factors include the construction of cinder cones, the decentralization of its rift zones, the glaciation on its peak, and the weathering effects of the prevailing trade winds.
 Mauna Kea last erupted 6,000 to 4,000 years ago and is now considered dormant.
In Hawaiian mythology, the peaks of the island of Hawaii are sacred. An ancient law allowed only high-ranking aliʻi to visit its peak. Ancient Hawaiians living on the slopes of Mauna Kea relied on its extensive forests for food, and quarried the dense volcano-glacial basalts on its flanks for tool production. When Europeans arrived in the late 18th century, settlers introduced cattle, sheep and game animals, many of which became feral and began to damage the mountain's ecological balance.
With its high elevation, dry environment, and stable airflow, Mauna Kea's summit is one of the best sites in the world for astronomical observation. Since the creation of an access road in 1964, thirteen telescopes funded by eleven countries have been constructed at the summit.
The Mauna Kea Observatories are used for scientific research across the electromagnetic spectrum and comprise the largest such facility in the world. Their construction on a landscape considered sacred by Native Hawaiians continues to be a topic of debate.

The painter 
Charles Furneaux was born in Boston and became a drawing instructor in that area. For many years he lived in the town of Melrose, Massachusetts. In 1880, Furneaux moved to Hawaii, where he cultivated the friendship of King Kalakaua and other members of the Hawaiian royal family, from whom he later received several commissions. In the late 1880s, he was commissioned in Honolulu by Alexander Joy Cartwright, widely credited as the "father of baseball" and another dear friend of King Kalakaua, to paint the only oil portrait of his 72-year life. While living in Honolulu he taught at the private schools Punahou and St. Albans (now known as Iolani School). In 1885, he received the order of Chevalier of Kapiolani from King Kalakaua in 'recognition of his services in advancing Hawaiian art'. He died in Hawaii in 1913.
His reputation is mainly based on the paintings he executed in Hawaii, especially those of erupting volcanoes. The Bishop Museum (Honolulu), the Brooklyn Museum, the Honolulu Museum of Art, Iolani Palace (Honolulu) and Mount Holyoke College Art Museum (South Hadley, Massachusetts) are among the public collections holding works by Charles Furneaux.

MAUNA LOA PAINTED BY JULES TAVERNIER

JULES TAVERNIER (1844-1889) 

Mauna Loa volcano  (4,170m - 13, 680 ft)

 United States of America  (Hawai'i)

 In Wailuku Falls, Hilo, Snow on the Mauna Loa, c. 1886,  oil on canvas 
Honolulu Museum of Arts  

The volcano 

Mauna Loa  (4,170m - 13, 680ft)  which means Long Mountain in Hawaiian, is one of five volcanoes that form the Island of Hawaii in the U.S. state of Hawaiʻi in the Pacific Ocean. The largest subaerial volcano in both mass and volume, Mauna Loa has historically been considered the largest volcano on Earth. It is an active shield volcano with relatively gentle slopes, with a volume estimated at approximately 18,000 cubic miles (75,000 km3), although its peak is about 120 feet (37 m) lower than that of its neighbor, Mauna Kea. Lava eruptions from Mauna Loa are silica-poor and very fluid, and they tend to be non-explosive.

Mauna Loa has probably been erupting for at least 700,000 years, and may have emerged above sea level about 400,000 years ago. The oldest-known dated rocks are not older than 200,000 years. The volcano's magma comes from the Hawaii hotspot, which has been responsible for the creation of the Hawaiian island chain over tens of millions of years. The slow drift of the Pacific Plate will eventually carry Mauna Loa away from the hotspot within 500,000 to one million years from now, at which point it will become extinct.

Mauna Loa's most recent eruption occurred from March 24 to April 15, 1984. No recent eruptions of the volcano have caused fatalities, but eruptions in 1926 and 1950 destroyed villages, and the city of Hilo is partly built on lava flows from the late 19th century. Because of the potential hazards it poses to population centers, Mauna Loa is part of the Decade Volcanoes program, which encourages studies of the world's most dangerous volcanoes. Mauna Loa has been monitored intensively by the Hawaiian Volcano Observatory since 1912. Observations of the atmosphere are undertaken at the Mauna Loa Observatory, and of the Sun at the Mauna Loa Solar Observatory, both located near the mountain's summit. Hawaii Volcanoes National Park covers the summit and the southeastern flank of the volcano, and also incorporates Kilauea, a separate volcano.

The painter 
Jules Tavernier was a French painter, illustrator, and an important member of Hawaii’s Volcano School.  He studied with the French painter, Félix Joseph Barrias (1822–1907). he left France in the 1870s and never  return. Tavernier was employed as an illustrator by Harper's Magazine, which sent him, along with Paul Frenzeny, on a year-long coast-to-coast sketching tour in 1873.
 Eventually, he continued westward to Hawaii, where he became quite famous as a landscape painter. He was fascinated by Hawaii’s erupting volcanoes—a subject that pre-occupied him for the rest of his life, which was spent in Hawaii, Canada and the western United States. Tavernier died on 18 May 1889 in Honolulu, Hawaii. He painted several version of the Kilauea erupting between 1880 and the end of his life.
Among the public collections holding paintings by Jules Tavernier are the Brigham Young University Museum of Art (Provo, UT), the Colorado Springs Fine Arts Center (Colorado Springs, CO), the Crocker Art Museum (Sacramento), the Gilcrease Museum (Tulsa, OK), Hearst Art Gallery (Saint Mary's College of California, Moraga, CA), the Honolulu Museum of Art, the Museum of Nebraska Art (Kearney, NE), the Oakland Museum of California, the San Diego Museum of Art, the Stark Museum of Art (Orange, TX), the Society of California Pioneers (San Francisco, CA), the Washington County Museum of Fine Arts (Hagerstown, MD) and the Yosemite Museum (Yosemite National Park).
After his death his art lived on in the hearts and homes of Hawaiians, and many more artists picked up on the volcano landscape theme he started. His Western art was mostly forgotten.
Fifty years after his death the Honolulu Advertiser remembered Jules Tavernier in December 1940 with the comment: “...to the generation which knew King Kalakaua, Tavernier recalls to mind some of the greatest paintings ever made of Hawaii volcanoes.”
At the beginning of the twenty-first century interest has reawakened in Tavernier's Western landscape art; museums are purchasing his pictures and prices for his oil paintings are increasing.
His students included D. Howard Hitchcock (1861–1943), Amédée Joullin (1862–1917), Charles Rollo Peters (1862–1917) and Manuel Valencia (1856–1935).

PICO DEL TEIDE PHOTOGRAPHED BY TEMPEST ANDERSON

TEMPEST ANDERSON (1846-1913), 

Pico del Teide (3, 718 m -12, 198 ft)

Tenerife - Canari Islands - Spain

In Teneriffe Peaks,  photographed in 1891 

The mountain 

Pico del  Teide (3,718m - 12,198 ft) (« Teide Peak") is a volcano on Tenerife in the Canary Islands, Spain. Before the 1495 Spanish colonization of Tenerife, the native Guanches called the volcano Echeyde, which in their legends referred to a powerful figure leaving the volcano, which could turn into hell. El Pico del Teide is the modern Spanish name.
Its summit is the highest point in Spain and the highest point above sea level in the islands of the Atlantic. If measured from its base on the ocean floor, it is at 7,500 m-24,600 ft the third highest volcano on a volcanic ocean island in the world after Mauna Kea and Mauna Loa in Hawaii. Its elevation makes Tenerife the tenth highest island in the world. It remains active: its most recent eruption occurred in 1909 from the El Chinyero vent on the northwestern Santiago rift.
Historical volcanic activity on the island is associated with vents on the Santiago or northwest rift (Boca Cangrejo in 1492, Montañas Negras in 1706, Narices del Teide or Chahorra in 1798 and El Chinyero in 1909) and the Cordillera Dorsal or northeast rift (Fasnia in 1704, Siete Fuentes and Arafo in 1705). The 1706 Montañas Negras eruption destroyed the town and principal port of Garachico, as well as several smaller villages.

The photographer
Tempest Anderson  was an ophthalmic surgeon at York County Hospital in the United Kingdom, and an expert amateur photographer and vulcanologist. He was a member of the Royal Society Commission which was appointed to investigate the aftermath of the eruptions of Soufriere volcano, St Vincent and Mont Pelee, Martinique, West Indies which both erupted in May 1902. Some of his photographs of these eruptions were subsequently published in his book, Volcanic Studies in Many Lands. Tempest Anderson spent nine months in Mexico, Guatemala and the West Indies in 1906/1907. He travelled to Mexico to attend the 10th Congres Geologique International before sailing by mail steamer to Guatemala to study the effects of the 1902 earthquake. During the trip he observed and photographed Cerro Quemado, Santa Maria, and Atitlan. During this trip he collected first hand accounts of the 1902 eruption of the Santa Maria and the immediate aftermath. Captain Saunders of the Pacific Mail Steamer S.S. Newport observed the eruption cloud which rose to a great height. The Captain measured it using a sextant and recorded it as reaching 17 to 18 miles. The sounds accompanying the eruption were loud and were heard even louder at more distant places than close to the mountain. The eruption was heard as far away as Guatemala City, the noises so strong, they were assumed to come from neighbouring volcanoes.

MAUNA LOA PAINTED BY CHARLES FURNEAUX

CHARLES FURNEAUX (1835-1913)

Mauna Loa volcano  (4,170m - 13, 680 ft)

 United States of America  (Hawai'i)

In Eruption of Mauna Loa in 1889, oil on canvas, Bernice Pauahi Bishop Museum Honolulu 

The volcano 

Mauna Loa  (4,170m - 13, 680ft)  which means Long Mountain in Hawaiian, is one of five volcanoes that form the Island of Hawaii in the U.S. state of Hawaiʻi in the Pacific Ocean. The largest subaerial volcano in both mass and volume, Mauna Loa has historically been considered the largest volcano on Earth. It is an active shield volcano with relatively gentle slopes, with a volume estimated at approximately 18,000 cubic miles (75,000 km3), although its peak is about 120 feet (37 m) lower than that of its neighbor, Mauna Kea. Lava eruptions from Mauna Loa are silica-poor and very fluid, and they tend to be non-explosive.

Mauna Loa has probably been erupting for at least 700,000 years, and may have emerged above sea level about 400,000 years ago. The oldest-known dated rocks are not older than 200,000 years. The volcano's magma comes from the Hawaii hotspot, which has been responsible for the creation of the Hawaiian island chain over tens of millions of years. The slow drift of the Pacific Plate will eventually carry Mauna Loa away from the hotspot within 500,000 to one million years from now, at which point it will become extinct.

Mauna Loa's most recent eruption occurred from March 24 to April 15, 1984. No recent eruptions of the volcano have caused fatalities, but eruptions in 1926 and 1950 destroyed villages, and the city of Hilo is partly built on lava flows from the late 19th century. Because of the potential hazards it poses to population centers, Mauna Loa is part of the Decade Volcanoes program, which encourages studies of the world's most dangerous volcanoes. Mauna Loa has been monitored intensively by the Hawaiian Volcano Observatory since 1912. Observations of the atmosphere are undertaken at the Mauna Loa Observatory, and of the Sun at the Mauna Loa Solar Observatory, both located near the mountain's summit. Hawaii Volcanoes National Park covers the summit and the southeastern flank of the volcano, and also incorporates Kilauea, a separate volcano.

The painter 
Charles Furneaux was born in Boston and became a drawing instructor in that area. For many years he lived in the town of Melrose, Massachusetts. In 1880, Furneaux moved to Hawaii, where he cultivated the friendship of King Kalakaua and other members of the Hawaiian royal family, from whom he later received several commissions. In the late 1880s, he was commissioned in Honolulu by Alexander Joy Cartwright, widely credited as the "father of baseball" and another dear friend of King Kalakaua, to paint the only oil portrait of his 72-year life. While living in Honolulu he taught at the private schools Punahou and St. Albans (now known as Iolani School). In 1885, he received the order of Chevalier of Kapiolani from King Kalakaua in 'recognition of his services in advancing Hawaiian art'. He died in Hawaii in 1913.
His reputation is mainly based on the paintings he executed in Hawaii, especially those of erupting volcanoes. The Bishop Museum (Honolulu), the Brooklyn Museum, the Honolulu Museum of Art, Iolani Palace (Honolulu) and Mount Holyoke College Art Museum (South Hadley, Massachusetts) are among the public collections holding works by Charles Furneaux.

PICO DEL TEIDE IN VINTAGE DRAWINGS

VINTAGE DRAWINGS 19th 

Pico del Teide (3, 718 m -12, 198 ft)

Tenerife - Canari Islands - Spain 

The mountain 

Pico del  Teide (3,718m - 12,198 ft) (« Teide Peak") is a volcano on Tenerife in the Canary Islands, Spain. Before the 1495 Spanish colonization of Tenerife, the native Guanches called the volcano Echeyde, which in their legends referred to a powerful figure leaving the volcano, which could turn into hell. El Pico del Teide is the modern Spanish name.
Its summit is the highest point in Spain and the highest point above sea level in the islands of the Atlantic. If measured from its base on the ocean floor, it is at 7,500 m-24,600 ft the third highest volcano on a volcanic ocean island in the world after Mauna Kea and Mauna Loa in Hawaii. Its elevation makes Tenerife the tenth highest island in the world. It remains active: its most recent eruption occurred in 1909 from the El Chinyero vent on the northwestern Santiago rift.
Historical volcanic activity on the island is associated with vents on the Santiago or northwest rift (Boca Cangrejo in 1492, Montañas Negras in 1706, Narices del Teide or Chahorra in 1798 and El Chinyero in 1909) and the Cordillera Dorsal or northeast rift (Fasnia in 1704, Siete Fuentes and Arafo in 1705). The 1706 Montañas Negras eruption destroyed the town and principal port of Garachico, as well as several smaller villages.
In 1492, Christopher Columbus reported seeing "a great fire in the Orotava Valley" as he sailed past Tenerife on his voyage to discover the New World. This was interpreted as indicating that he had witnessed an eruption there. Radiometric dating of possible lavas indicates that in 1492 no eruption occurred in the Orotava Valley, but one did occur from the Boca Cangrejo vent.
The last summit eruption from Teide occurred about the year 850 CE, and this eruption produced the "Lavas Negras"  that cover much of the flanks of the volcano.
About 150,000 years ago, a much larger explosive eruption occurred, probably of Volcanic Explosivity Index 5.
The United Nations Committee for Disaster Mitigation designated Teide a Decade Volcano because of its history of destructive eruptions and its proximity to several large towns, of which the closest are Garachico, Icod de los Vinos and Puerto de la Cruz. Teide, Pico Viejo and Montaсa Blanca form the Central Volcanic Complex of Tenerife.
In a publication of 1626, Sir Edmund Scory, who probably stayed on the island in the first decades of the 17th century, gives a description of Teide, in which he notes the suitable paths to the top and the effects the considerable height causes to the travellers, indicating that the volcano had been accessed via different routes before the 17th century. In 1715 the English traveler J. Edens and his party made the ascent and reported their observations in the journal of the Royal Society in London.
After the Enlightenment, most of the expeditions that went to East Africa and the Pacific had Teide as one of the most rewarding targets. The expedition of Lord George Macartney, George Staunton and John Barrow in 1792 almost ended in tragedy, as a major snowstorm and rain swept over them and they failed to reach the peak of Teide, just barely getting past Montaña Blanca.
During an expedition to Kilimanjaro, the German adventurer Hans Heinrich Joseph Meyer visited Teide in 1894 to observe ice conditions on the volcano. He described the two mountains as "two kings, one rising in the ocean and the other in the desert and steppes"
The volcano and its surroundings comprise Teide National Park, which has an area of 18,900 hectares (47,000 acres) and was named a World Heritage Site by UNESCO on June 28, 2007. Teide is the most visited natural wonder of Spain, the most visited national park in Spain and Europe and – by 2015 – the eighth most visited in the world, with some 3 million visitors yearly. A major international astronomical observatory is located on the slopes of the mountain.

AEOLIS MONS BY NASA CURIOSITY MISSION

NASA CURIOSITY MISSION (since 2012)

Aeolis Mons or Mount Sharp (5, 500 m - 18, 000 ft)

Mars  

3 pictures of Aeolis Mons taken by NASA Curiosity Rover & Curiosity team : 

1. Aeolis Mons photographed by  Curiosity Rover on September 9, 2012

2. Aeolis Mons photographed by Curiosity Rover on September 20, 2012

3.  Aeolis Mons photographed  by Curiosity Rover on August 6, 2012

(Click images to enlarge)  

The mountain

Aeolis Mons (5, 500 m - 18, 000 ft) also called Mount Sharp is a mountain on the surface of the planet Mars. It forms the central peak within Gale crater and is located around 5.08°S 137.85°E, rising 5.5 km (18,000 ft) high from the valley floor. Aeolis Mons is about the same height as Mons Huygens, the tallest lunar mountain, and taller than Mons Hadley visited by Apollo 15. The tallest mountain known in the Solar System is in Rheasilvia crater on the asteroid Vesta, which contains a central mound that rises 22 km  or 22.000 m - 14 mi or 72,000 ft high.
Olympus Mons on Mars is nearly the same height, at 21.9 km (13.6 mi; 72,000 ft) high.
In comparison, Mount Everest / Chomolunga rises to 8.8 km -29,000 ft altitude above sea level, but is only 4.6 km - 15,000 ft  base-to-peak. Africa's Mount Kilimanjaro is about 5.9 km - 19,000 ft altitude above sea level  also 4.6 km base-to-peak. America's Denali, also known as Mount McKinley, has a base-to-peak of 5.5 km -18,000 ft.  The Franco-Italian Mont Blanc/Monte Bianco is 4.8 km -16,000 ft in altitude above sea level.  Mount Fuji, which overlooks Tokyo, Japan, is about 3.8 km -12,000 ft altitude. Compared to the Andes, Aeolis Mons would rank outside the hundred tallest peaks, being roughly the same height as Argentina's Cerro Pajonal; the peak is higher than any above sea level in Oceania, but base-to peak it is considerably shorter than Hawaii's Mauna Kea and its neighbors.
Discovered in the 1970s by NAS,  the mountain remained nameless for perhaps 40 years. When it became a likely landing site, it was given various labels; for example, in 2010 a NASA photo caption called it "Gale crater mound".  In March 2012, NASA unofficially named it "Mount Sharp", for American geologist Robert P. Sharp. The International Astronomical Union, which is responsible for planetary nomenclature for its participants, names large Martian mountains after the Classical albedo feature in which it is located, not for people. In May 2012 the IAU thus named the mountain Aeolis Mons, and gave the name Aeolis Palus to the crater floor plain between the northern wall of Gale and the northern foothills of the mountain. Despite the official name, NASA and the ESA continue to refer to the mountain as "Mount Sharp" in press conferences and press releases
Aeolis is the ancient name of the Izmir region in western Turkey.

The NASA mission 
On August 6, 2012, Curiosity (the Mars Science Laboratory rover) landed in "Yellowknife" Quad of Aeolis Palus, next to the mountain. NASA named the landing site Bradbury Landing on August 22, 2012. Aeolis Mons is a primary goal for scientific study.
 On June 5, 2013, NASA announced that Curiosity would begin a 8 km (5.0 mi) journey from the Glenelg area to the base of Aeolis Mons.
On November 13, 2013, NASA announced that an entryway Curiosity would traverse on its way to Aeolis Mons was to be named "Murray Buttes", in honor of planetary scientist Bruce C. Murray (1931–2013). The trip was expected to take about a year and would include stops along the way to study the local terrain.
On September 11, 2014, NASA announced that the Curiosity rover had reached Aeolis Mons, the rover mission's long-term prime destination.
On October 5, 2015, possible recurrent slope lineae, wet brine flows, were reported on Mount Sharp near Curiosity.

As of January 20, 2017, Curiosity has been on the planet Mars for 1585 sols (1628 days) since landing on August 6, 2012. 

Sources: 

- NASA Curiosity Mission page 

- Wikipedia

MAUNA LOA PAINTED BY JULES TAVERNIER

JULES TAVERNIER (1844-1889) 

Mauna Loa volcano  (4,170m - 13, 680 ft)

 United States of America  (Hawai'i)

 In  Mokuaweoweo at the top of Mauna Loa, oil on canvas, Honolulu Museum of Arts  

The volcano 

Mauna Loa  (4,170m - 13, 680ft)  which means Long Mountain in Hawaiian, is one of five volcanoes that form the Island of Hawaii in the U.S. state of Hawaiʻi in the Pacific Ocean. The largest subaerial volcano in both mass and volume, Mauna Loa has historically been considered the largest volcano on Earth. It is an active shield volcano with relatively gentle slopes, with a volume estimated at approximately 18,000 cubic miles (75,000 km3), although its peak is about 120 feet (37 m) lower than that of its neighbor, Mauna Kea. Lava eruptions from Mauna Loa are silica-poor and very fluid, and they tend to be non-explosive.

Mauna Loa has probably been erupting for at least 700,000 years, and may have emerged above sea level about 400,000 years ago. The oldest-known dated rocks are not older than 200,000 years. The volcano's magma comes from the Hawaii hotspot, which has been responsible for the creation of the Hawaiian island chain over tens of millions of years. The slow drift of the Pacific Plate will eventually carry Mauna Loa away from the hotspot within 500,000 to one million years from now, at which point it will become extinct.

Mauna Loa's most recent eruption occurred from March 24 to April 15, 1984. No recent eruptions of the volcano have caused fatalities, but eruptions in 1926 and 1950 destroyed villages, and the city of Hilo is partly built on lava flows from the late 19th century. Because of the potential hazards it poses to population centers, Mauna Loa is part of the Decade Volcanoes program, which encourages studies of the world's most dangerous volcanoes. Mauna Loa has been monitored intensively by the Hawaiian Volcano Observatory since 1912. Observations of the atmosphere are undertaken at the Mauna Loa Observatory, and of the Sun at the Mauna Loa Solar Observatory, both located near the mountain's summit. Hawaii Volcanoes National Park covers the summit and the southeastern flank of the volcano, and also incorporates Kilauea, a separate volcano.

Source: 

- Hawaii Center for Volcanology

The painter 
Jules Tavernier was a French painter, illustrator, and an important member of Hawaii’s Volcano School.  He studied with the French painter, Félix Joseph Barrias (1822–1907). he left France in the 1870s and never  return. Tavernier was employed as an illustrator by Harper's Magazine, which sent him, along with Paul Frenzeny, on a year-long coast-to-coast sketching tour in 1873.
 Eventually, he continued westward to Hawaii, where he became quite famous as a landscape painter. He was fascinated by Hawaii’s erupting volcanoes—a subject that pre-occupied him for the rest of his life, which was spent in Hawaii, Canada and the western United States. Tavernier died on 18 May 1889 in Honolulu, Hawaii. He painted several version of the Kilauea erupting between 1880 and the end of his life.
Among the public collections holding paintings by Jules Tavernier are the Brigham Young University Museum of Art (Provo, UT), the Colorado Springs Fine Arts Center (Colorado Springs, CO), the Crocker Art Museum (Sacramento), the Gilcrease Museum (Tulsa, OK), Hearst Art Gallery (Saint Mary's College of California, Moraga, CA), the Honolulu Museum of Art, the Museum of Nebraska Art (Kearney, NE), the Oakland Museum of California, the San Diego Museum of Art, the Stark Museum of Art (Orange, TX), the Society of California Pioneers (San Francisco, CA), the Washington County Museum of Fine Arts (Hagerstown, MD) and the Yosemite Museum (Yosemite National Park).
After his death his art lived on in the hearts and homes of Hawaiians, and many more artists picked up on the volcano landscape theme he started. His Western art was mostly forgotten.
Fifty years after his death the Honolulu Advertiser remembered Jules Tavernier in December 1940 with the comment: “...to the generation which knew King Kalakaua, Tavernier recalls to mind some of the greatest paintings ever made of Hawaii volcanoes.”
At the beginning of the twenty-first century interest has reawakened in Tavernier's Western landscape art; museums are purchasing his pictures and prices for his oil paintings are increasing.
His students included D. Howard Hitchcock (1861–1943), Amédée Joullin (1862–1917), Charles Rollo Peters (1862–1917) and Manuel Valencia (1856–1935).
Source:
- Tigertail Virtual Museum