Thomas Jaggar - Hawaiian Volcano Observatory

Hawaiian Volcano Observatory

After a lecture on his Martinique expedition in Honolulu, Jaggar was approached by Lorrin A. Thurston a prominent Honolulu lawyer and businessman. Thurston, like Jaggar, believed that Kilauea was a prime site for a permanent volcano observatory and inquired of Jaggar, "Is it then a question of money?". Within a year of this conversation, Thurston and other businessmen raised financial backing for the Hawaii Volcano Research Association. A small observing station was set up on the rim of Halemaʻumaʻu crater (a pit crater within Kilauea's summit caldera). In 1912, support was forthcoming from an MIT alumnus and construction of the new Hawaiian Volcano Observatory (HVO) began. The first instruments were in a cellar called the Whitney (for the donor) vault adjacent to the Volcano House Hotel.

During his early years as Director, Jaggar struggled after private endowments with the hope of eventually securing sponsorship by the Federal Government. In 1919, Jaggar convinced the National Weather Service to fund HVO. The United States Geological Survey took over its operation in 1924, with the exception of a brief hiatus during the Great Depression when HVO was run by the National Park Service.

Jaggar remained Director of HVO until 1940. The Thomas A. Jaggar Museum in Hawaii Volcanoes National Park is named for him. It is located at the main observatory building.

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