Thomas Augustus Jaggar (1871-1953) was an American geologist, volcanologist, and professor. He was born in Buffalo, New York, and received his education at Harvard University, where he earned his PhD in geology in 1899. He taught at the Massachusetts Institute of Technology (MIT) for over 30 years and was the founder and director of the Hawaiian Volcano Observatory. Jaggar was known for his extensive research on Hawaiian volcanoes and his work to develop the science of volcanology. He was an expert on the activity and behavior of Hawaiian volcanoes and was instrumental in the development of early warning systems for volcanic eruptions. In addition to his scientific work, Jaggar was a dedicated educator and was respected for his teaching style and mentorship. He was also known for his contributions to the development of the field of geology, and was awarded numerous accolades for his work. Throughout his career, Jaggar remained dedicated to the study of volcanoes and their impact on people and the environment. His work had a lasting impact on the field of geology and helped advance our understanding of volcanic activity and the mechanisms behind volcanic eruptions.
