Harry O. Wood

Harry O. Wood
BornDecember 31, 1879
Austin Texas
Died1958 (aged 78–79)
USA
NationalityAmerican
Alma materHarvard University
Known forWood-Anderson seismometer
Scientific career
FieldsSeismology
InstitutionsUniversity of California, Berkeley
Hawaiian Volcano Observatory
California Institute of Technology
Carnegie Institution for Science

Harry Oscar Wood (1879–1958) was an American seismologist who made several significant contributions in the field of seismology in the early twentieth-century. Following the 1906 earthquake in San Francisco, California, Wood expanded his background of geology and mineralogy and his career took a change of direction into the field of seismology. In the 1920s he co-developed the torsion seismometer, a device tuned to detect short-period seismic waves that are associated with local earthquakes. In 1931 Wood, along with another seismologist, redeveloped and updated the Mercalli intensity scale, a seismic intensity scale that is still in use as a primary means of rating an earthquake's effects.