Abstract
For the average citizen and the public, "earthquake prediction" means "short-term prediction," a prediction of a specific earthquake on a relatively short time scale. Such prediction must specify the time, place, and magnitude of the earthquake in question with sufficiently high reliability. For this type of prediction, one must rely on some short-term precursors. Examinations of strain changes just before large earthquakes suggest that consistent detection of such precursory strain changes cannot be expected. Other precursory phenomena such as foreshocks and nonseismological anomalies do not occur consistently either. Thus, reliable short-term prediction would be very difficult. Although short-term predictions with large uncertainties could be useful for some areas if their social and economic environments can tolerate false alarms, such predictions would be impractical for most modern industrialized cities. A strategy for effective seismic hazard reduction is to take full advantage of the recent technical advancements in seismology, computers, and communication. In highly industrialized communities, rapid earthquake information is critically important for emergency services agencies, utilities, communications, financial companies, and media to make quick reports and damage estimates and to determine where emergency response is most needed. Long-term forecast, or prognosis, of earthquakes is important for development of realistic building codes, retrofitting existing structures, and land-use planning, but the distinction between short-term and long-term predictions needs to be clearly communicated to the public to avoid misunderstanding.
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- Hill D. P., Reasenberg P. A., Michael A., Arabaz W. J., Beroza G., Brumbaugh D., Brune J. N., Castro R., Davis S., Depolo D., Ellsworth W. L., Gomberg J., Harmsen S., House L., Jackson S. M., Johnston M. J., Jones L., Keller R., Malone S., Munguia L., Nava S., Pechmann J. C., Sanford A., Simpson R. W., Smith R. B., Stark M., Stickney M., Vidal A., Walter S., Wong V., Zollweg J. Seismicity remotely triggered by the magnitude 7.3 landers, california, earthquake. Science. 1993 Jun 11;260(5114):1617–1623. doi: 10.1126/science.260.5114.1617. [DOI] [PubMed] [Google Scholar]
- Ihmlé P. F., Harabaglia P., Jordan T. H. Teleseismic detection of a slow precursor to the great 1989 macquarie ridge earthquake. Science. 1993 Jul 9;261(5118):177–183. doi: 10.1126/science.261.5118.177. [DOI] [PubMed] [Google Scholar]
- Sood A. K., Sorosky J. I., Mayr N., Krogman S., Anderson B., Buller R. E., Hussey D. H. Radiotherapeutic management of cervical carcinoma that complicates pregnancy. Cancer. 1997 Sep 15;80(6):1073–1078. doi: 10.1002/(sici)1097-0142(19970915)80:6<1073::aid-cncr9>3.0.co;2-a. [DOI] [PubMed] [Google Scholar]