Earthquake localization
Terminology:
- Hypocenter or focus: location where earthquake originates
- Epicenter: corresponding surface location (lat., lon.)
- Origin time: Initiation time of the earthquake
(Epicentral distance distance to epicenter)
(max depth seismicity: ~ 700 km)Seismicity Tonga subduction zone 1977-1994
Earthquake terminology
Single station method: S-P travel time difference
Single station method: P wave polarization
Single station method: P wave polarization
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