Hawaiian Volcano Observatory facts for kids
 HVO observation tower, abandoned in 2018 after structural damage |
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| Agency overview | |
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| Formed | 1912 |
| Headquarters | Hilo, Hawaii, USA |
| Website | https://volcanoes.usgs.gov/observatories/hvo/ |
The Hawaiian Volcano Observatory (HVO) is an agency of the U.S. Geological Survey, with temporary offices located in Hilo on the Island of Hawaiʻi. The former volcano observatory clifftop facility and HVO offices, closed due to structural damage in 2018, is located at Uwekahuna Bluff on the rim of Kīlauea Caldera. The observatory staff and equipment monitors four active Hawaiian volcanoes: Kīlauea, Mauna Loa, Hualālai, and Haleakalā. Because Kīlauea and Mauna Loa are significantly more active than Hualālai and Haleakalā, much of the observatory's research is concentrated on the former two mountains.
HVO has a worldwide reputation as a leader in the study of active volcanism. Due to the relatively non-explosive nature of Kīlauea's volcanic eruptions for many years, scientists could study ongoing eruptions in proximity without being in extreme danger. Also located at the shuttered main site was the public Thomas A. Jaggar Museum.
In May 2018 the Kilauea caldera facility buildings were closed and the property permanently evacuated due to structural damage resulting from collapse explosions at Halemaʻumaʻu and earthquakes related to the 2018 lower Puna eruption, which also led to the months-long closure of the Kīlauea unit of Hawaii Volcanoes National Park.
An April 2019 report stated that a move of the observatory staff to Oʻahu was being considered. In August 2019 it was reported that the Observatory was looking for a new permanent site in Hilo to replace the transitional offices in use since 2018.
History
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Whitney Seismograph Vault No. 29
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 Location in Hawaii
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| Nearest city | Volcano, Hawaii |
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| Area | 18 feet (5.5 m) by 17.5 feet (5.3 m) |
| Built | 1912 |
| NRHP reference No. | 74000292 |
| Added to NRHP | July 24, 1974 |
Besides the oral history of Ancient Hawaiians, several early explorers left records of observations. Rev. William Ellis kept a journal of his 1823 missionary tour, and Titus Coan documented eruptions through 1881. Scientists often debated the accuracy of these descriptions. When geologist Thomas Jaggar of the Massachusetts Institute of Technology gave a lecture in Honolulu in 1909, he was approached by businessman Lorrin A. Thurston (grandson of Asa Thurston who was on the 1823 missionary tour) about building a full-time scientific observatory at Kīlauea. The Hawaiian Volcano Research Association was formed by local businessmen for its support. George Lycurgus, who owned the Volcano House at the edge of the main caldera, proposed a site adjacent to his hotel and restaurant.
In 1911 and 1912, small cabins were built on the floor of the caldera next to the main active vent of Halemaʻumaʻu, but these were hard to maintain. MIT added $25,000 in support in 1912 from the estate of Edward and Caroline Whitney to build a more permanent facility. The first instruments were housed in a cellar next to the Volcano House called the Whitney Laboratory of Seismology. Inmates from a nearby prison camp had excavated through 5.5 feet (1.7 m) of volcanic ash. Massive reinforced concrete walls supported a small building built on top of the structure. Professor Fusakichi Omori of Japan, now best known for his study of aftershocks, designed the original seismometers. This seismograph vault (building number 29 on a site inventory) is state historic site 10-52-5506, and was added to the National Register of Historic Places on July 24, 1974 as site 74000292.
From 1912 until 1919, the observatory was run by Jaggar personally. Many important events were recorded, although as pioneers, the team often ran into major problems. For example, in 1913 an earthquake opened a crack in a wall and water seeped in. The windows meant to admit natural light caused the vault to heat up in the intense tropical sun. The opening of the national park in 1916 (at the urging of Thurston) brought more visitors to bother the scientists, but also park rangers who would take over public lectures. The prison that had supplied laborers was replaced by the Kīlauea Military Camp.
In 1919, Jaggar convinced the National Weather Service to take over operations at the observatory. In 1924, the observatory was taken over by the United States Geological Survey and it has been run by the USGS ever since (except for a brief period during the Great Depression, when the observatory was run by the National Park Service). When the Volcano House hotel burned to the ground in 1940, the old building was torn down (although the instruments in the vault continued to be used until 1961).
George Lycurgus convinced friends in Washington D.C. (many of whom had stayed in the Volcano House) to build a larger building farther back from the cliff, so he could built a new larger hotel at the former HVO site. By 1942, the "Volcano Observatory and Naturalist Building" was designated number 41 on the park inventory. However, with the advent of World War II, it was commandeered as a military headquarters. HVO was allowed to use building 41 from October 1942 to September 1948, when it became the park headquarters (and still is today, after several additions).
About two miles west, in an area known as Uwekahuna, a "National Park Museum and Lecture Hall" had been built in 1927. The name means roughly "the priest wept" in the Hawaiian Language, which indicates it might have been used to make offerings in the past. The HVO moved there in 1948 after some remodeling of the building. This site was even closer to the main vent of Kīlauea. In 1985 a larger building was built for the observatory adjacent to the old lecture hall, which was turned back into a museum and public viewing site. In the mid-1980s, HVO launched the Big Island Map Project (BIMP) to update the geologic map of the island of Hawai'i. Its major publication is the 1996 Geologic Map of the Island of Hawai'i (1996) by E.W. Wolfe and Jean Morris, digitized in 2005.
Hawaiian Volcano Observatory (HVO)
- HVO Directors
- 1912 to 1940, Thomas A. Jaggar, Jr. (1871–1953)
- 1940 to 1951, Ruy H. Finch
- 1951 to 1955, Gordon A. MacDonald (1911–1978)
- 1956 to 1958, Jerry P. Eaton
- HVO Scientists-in-Charge
- 1958 to 1960, Kiguma J. Murata
- 1960 to 1961, Jerry P. Eaton
- 1961 to 1962, Donald H. Richter
- 1962 to 1963, James G. Moore
- 1964 to 1970, Howard A. Powers
- 1970 to 1975, Donald W. Peterson
- 1975 to 1976, Robert I. Tilling
- 1976 to 1978, Gordon P. Eaton
- 1978 to 1979, Donald W. Peterson
- 1979 to 1984, Robert W. Decker (1927–2005)
- 1984 to 1991, Thomas L. Wright
- 1991 to 1996, David A. Clague
- 1996 to 1997, Margaret T. Mangan
- 1997 to 2004, Donald A. Swanson
- 2004 to 2015, James P. Kauahikaua
- 2015 to 2020, Christina A. Neal
- 2021 to present, Ken Hon
Present day operations
Modern electronic equipment now monitors earthquakes from several sites, with over 100 remote stations transmitting data 24 hours a day. This information is provided immediately over the Internet, as is live coverage of ongoing eruptions from several webcams accessible from the Hawaiian Volcano Observatory website (see External links). Another important function of HVO is to monitor the sulphur emissions that produce the volcanic pollution condition known as vog. The observatory advises the park service when to close areas due to this and other volcanic hazards.
While the main Observatory building itself was not open to the public, the adjacent Thomas A. Jaggar Museum included interpretive exhibits on the work performed at the observatory. The exhibits ranged from general information on volcanoes and lava to the scientific equipment and clothing used by volcanologists. Some of the museum's windows provided a sheltered view of Halemaʻumaʻu and the Kīlauea Caldera. A public observation deck at the museum, overlooking Kīlauea and formerly open 24 hours a day, provided views of the area.
On May 10, 2018, Hawaii Volcanoes National Park was closed to the public in the Kīlauea volcano summit area, including the visitor center and park headquarters, due to explosions, earthquakes and toxic ash clouds from Halemaʻumaʻu. While much of the park was reopened on September 22, 2018, the former Observatory building and Jaggar Museum remain closed, due to considerable structural damage done to the facility.
With nearly 70 million in federal relief dollars appropriated in 2019, the Observatory is currently looking for a new location for their operations.
- Volcanism in Hawaii: Papers to Commemorate the 75th Anniversary of the Founding of the Hawaiian Volcano Observatory (HVO)
- Volcanism in Hawaii: Paper to Commemorate the 100th Anniversary of the Founding of the Hawaiian Volcano Observatory (HVO)
See also
In Spanish: Observatorio Vulcanológico de Hawái para niños
