Quaternary Geology – An Essential Clue to Evaluating Seismicity
- Creators
- Allen, Clarence R.
Abstract
The geologic record, particularly that of the late Quaternary period, is a far more valuable tool in estimating seismicity and associated seismic hazard than has generally been recognized. This is simply because, by looking into the recent geologic past, the geologist is able to overcome many of the statistical inadequacies of the relatively short instrumental and historic records. These shortcomings are best illustrated in those parts of the world with the longest historic records of earthquakes—2000 years for Japan and the Middle East and 3000 years for China—where surprising variations in both the rates of recurrence and places of recurrence are evident. These long records show that earthquakes are by no means uniform in space and time, at least over intervals of only 1000 or 2000 years.
Additional Information
© 1978 USGS. This report is Contribution No. 2996 of the Division of Geological and Planetary Sciences, California Institute of Technology.Attached Files
Published - Allen_1978p4.pdf
Files
Name | Size | Download all |
---|---|---|
md5:46621808c3482b8119a431a1e25ed51a
|
6.3 MB | Preview Download |
Additional details
- Eprint ID
- 98562
- Resolver ID
- CaltechAUTHORS:20190910-160240515
- Created
-
2019-09-10Created from EPrint's datestamp field
- Updated
-
2019-10-03Created from EPrint's last_modified field
- Caltech groups
- Seismological Laboratory
- Other Numbering System Name
- Caltech Division of Geological and Planetary Sciences
- Other Numbering System Identifier
- 2996