The 1983, M 5.9 earthquake of Heze,Shandong Province,with its short-term and imminent precursory phenomena |
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| Institution: | 1. School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China;2. State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China;3. CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Innovation Academy for Green Manufacture, Chinese Academy of Sciences, Beijing 100190, China;1. Faculty of Resources and Safety Engineering, China University of Mining and Technology (Beijing), Beijing 100083, PR China;2. Earth Observation Center, EOC, German Aerospace Center, DLR, Oberpfaffenhofen, 82234 Wessling, Germany;1. Medical school, Kunming University of Science and Technology, Kunming, 650500, Yunnan Province, PR China;2. Department of Pulmonary and Critical Care Medicine, Yunnan Provincial Key Laboratory for Clinical Virology, Institute of Basic and Clinical Medicine, The First People''s Hospital of Yunnan Province, Kunming, 650032, PR China;3. Department of Infectious Diseases and Hepatic Disease, Yunnan Province Innovation Team of Intestinal Microecology Related Disease Research and Technological Transformation, the First People''s Hospital of Yunnan Province, Kunming 650032, PR China |
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| Abstract: | An earthquake (M = 5.9) occurred on November 7, 1983 in the Heze area, Shandong Province (35°17′ N, 115°17∃, H = 12 km). This earthquake belongs to the isolated type of earthquakes. There were no foreshocks; the aftershocks were few in number with their energy decreasing quickly.Within the area surrounding the main shock and up to about 200 km from the epicenter, several types of short-term and imminent anomalies were observed. The major characteristics of the anomalies are as follows:The short-term and imminent anomalies are relatively few in number. The maximum radius of the area where the anomalies occur is about 150–200 km from the epicenter. The time durations of what have been called short-term and imminent anomalies here are small, being - 1.(1) from 10–20 days to 3–4 months and
- 2.(2) from 1–2 hours to 2–3 days, respectively. The premonitory information was scanty.
Finally, the procedure to recognize the indications of a moderate earthquake is discussed. |
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