POSSIBLE MECHANISMS OF ELECTROMAGNETIC EMISSIONS ASSOCIATED WITH EARTHQUAKE PREPARATION

Possible Electromagnetic Effects on Abnormal Animal Behavior Before an Earthquake

The former statistical properties summarized by Rikitake (1998) on unusual animal behavior before an earthquake (EQ) have first been presented by using two parameters (epicentral distance (D) of an anomaly and its precursor (or lead) time (T)). Three plots are utilized to characterize the unusual animal behavior; (i) EQ magnitude (M) versus D, (ii) log T versus M, and (iii) occurrence histogram...

Determining the components of resilience with emphasis on environmental resilience in a possible earthquake in Tehran

Background and objective: Tehran metropolis is surrounded by 110 faults and 3 large and active faults and is one of the earthquake prone areas in the country. Therefore, it is necessary to study its resilience in the event of an earthquake. In recent years, the study of the necessity and importance of applying the principles of urban resilience and the factors affecting it in reducing risks in ...

ULF/ELF emissions observed in Japan, possibly associated with the Chi-Chi earthquake in Taiwan

ULF/ELF emission observation has been performed at Nakatsugawa observatory (geographic coordinates; 35.4 N, 137.5 E, Gifu prefecture) since January 1999. The equipment consists of three-orthogonal magnetic sensors (induction coils), amplifiers, A/D converters and the data logger with a computer. The frequency range of observation is from 0.001 Hz to 50 Hz. The serious changes in ELF magnetic fi...

Secret Recovery from Electromagnetic Emissions

Electromagnetic emissions leak confidential data of cryptographic devices. The electromagnetic emission has been reported as an important side channel for cryptanalysis. Electromagnetic Analysis (EMA) exploits the external radiation of cryptographic devices during encryption to reveal secret keys. The performance of EMA depends on the acquired signals to a large extent. To protect the devices f...

Earthquake Sequence Calculations with Dynamic Weakening Mechanisms