A Location Study of Central Alaskan Earthquakes
Abstract
A seismic location study has been conducted in a continental region, Central Alaska, to verify the general applicability of the travel-time anomaly technique. First, using local stations and estimating event depths by observing pP, a set of earthquakes in the Central Alaska region was located with residual travel time errors attributable to reading error. The distribution of anomalies for teleseismic stations indicates that the Central Alaska region is composed of three subregion between which the anomalies vary by as much as 5 seconds for some stations. A comparison of locations obtained using a local network with those using only a teleseismic network can be reliably obtained for only two events. The shifts from the local locations are 3 and 11 km with anomalies, as contrasted to 39 and 25 km without anomalies. anomalies agree as well with local locations as do locations using anomalies from events in each apparent anomaly sub-region.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 17, 1971
- Accession Number
- AD0886279
Entities
People
- E. F. Chiburis
- R. O. Ahner
- T. R. Potts
Organizations
- Teledyne Technologies