Thomas Jaggar
| Thomas Augustus Jaggar, Jr. | |
|---|---|
Founder Hawaiian Volcano Observatory
|
|
| Born |
January 24, 1871 Philadelphia, Pennsylvania. |
| Died | January 17, 1953 (aged 81) Honolulu, Hawaii |
| Nationality | United States |
| Occupation | Geologist |
| Spouse(s) |
Isabel Maydwell Helen Kline Jaggar (first wife from San Francisco, CA.) Children: Kline Jaggar and Sallie Jaggar Hayes (born: Eliza Bowne Jaggar) Grandson: Peter Davis Hayes, Brigadier General United States Air Force (retired): Spouse: Carol Willard Hayes Great grandchildren; Donna Lisle Johnson, Whitney Louise Hayes and John Michael Jaggar Hayes |
| Parent(s) |
Thomas Augustus Jaggar Anna Louisa Lawrence |
Isabel Maydwell
Helen Kline Jaggar (first wife from San Francisco, CA.) Children: Kline Jaggar and Sallie Jaggar Hayes (born: Eliza Bowne Jaggar) Grandson: Peter Davis Hayes, Brigadier General United States Air Force (retired): Spouse: Carol Willard Hayes
Thomas Augustus Jaggar, Jr. (January 24, 1871 – January 17, 1953) was an American volcanologist. He founded the Hawaiian Volcano Observatory and directed it from 1912 to 1940.
He was born in Philadelphia, Pennsylvania in 1871, son of Episcopal Bishop of Southern Ohio Thomas Augustus Jaggar.
In 1897, he received his Ph.D. in geology from Harvard University. He spent the next few years as a scientist in the laboratory. He felt strongly that experimentation was the key to understanding earth science. Jaggar constructed water flumes bedded by sand and gravel in order to understand stream erosion and melted rocks in furnaces to study the behavior of magmas.
As he matured as a scientist, he began to feel the increasing need for field experimentation. Jaggar wrote at this time,
"Whereas small scale experiments in the laboratory helped me to think about the details of nature...there remained the need to measure nature itself."
Thus Jaggar began a decade-long period of exploration to witness and analyze first-hand natural geologic processes.
In 1902, he was one of the scientists that the United States sent to investigate the volcanic disasters at Soufrière and Mont Pelée. With the help of the U.S. Navy and the National Geographic Society, Jaggar landed on the steaming shores of Martinique some 13 days after the disaster. The same year, he was elected a Fellow of the American Academy of Arts and Sciences.
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