On Anomalous Time-Distance Curves Observed in Local Earthquakes
By: Euchi Nishimura, Takeshi Mikumo and Michio Otsuka
Abstract
The precise observations of local earthquakes were carried out in Wakayama District, Japan, for the purpose of studying the crustal structure and the nature of local shocks.
The travel-time anomalies were detected, and the anomalous time-distance curves were separable into two groups which seemed to be related with the directions of the initial motion of shocks recorded at their respective stations. The causes of the travel-time anomalies may reasonably be attributed to the condition of the hypocentre and mechanism of earthquake occurrence.
DOI: https://doi.org/10.3402/tellusa.v10i1.9146 | Journal eISSN: 3035-9554
Language: English
Page range: 145 - 152
Published on: Jan 1, 1958
Published by: Stockholm University Press
In partnership with: Paradigm Publishing Services
© 1958 Euchi Nishimura, Takeshi Mikumo, Michio Otsuka, published by Stockholm University Press
This work is licensed under the Creative Commons Attribution 4.0 License.