Abstract
The relationships of the Earth’s magnetic field intensity and time (the past 320 years) for many locations around the world are obtained, based on the IGRF-13 mathematical model. The results showed that each location on the earth surface has its magnetic intensity relation with time that reflects local variations. The sudden changes (magnetic anomalies) in the Earth’s magnetic field with time are natural phenomena, which are different from place to another. These magnetic anomalies are investigated for possible relationship to the historical records of the influenza pandemic outbreaks. The results showed clear congruences between the Earth’s magnetic anomalies and influenza outbreaks times. The congruences become clearer when comparing the highest magnetic anomaly intensity and the first outbreak location of the influenza pandemic. This is true for the recorded historical data since 1890 AD. It is not known how the changes in Earth’s magnetic field affect the virus’s outbreaks or evolution, but there is a clear relation that needs detailed studies.
Highlights
The relationship between the Earth’s magnetic field, climate and life has become an interesting subject for many researchers
Researchers are able to improve up the mathematical model that describes the terrestrial magnetic field for the 430 past years. It is the International Geomagnetic Reference Field (IGRF) 13th generation (IGRF-13, 2020), which was endorsed by International Association of Geomagnetism and Aeronomy (IAGA) at the beginning of year 2020
The NOAA web site (National Center of Environmental Information) makes the IGRF-13 available and easy used calculator for the world researchers. According to this model (IGRF-13, 2020) the magnetic field with all its components can be obtained for any location on the surface of the earth and from 1590 AD to 2024 AD with very good accuracy for the past one hundred and twenty years and well accepted for previous periods depending on the availability of past marine navigation data and the historical records of the geomagnetic secular variation
Summary
The relationship between the Earth’s magnetic field, climate and life has become an interesting subject for many researchers. Positive relations were found for the Earth’s magnetic field variations and the climate changes (Wollin et al, 1971; Dergachev et al, 2012 and Campuzno et al, 2018). A positive relation was found for the biological life. Jiangmen and Wickramasinghe (2018) in their study found a good relation between Earth’s magnetic field change and Zika virus outbreak. Channel and Vigliotti (2019) concluded that a clear relation is existed between changing of Earth’s magnetic field and the Late Quaternary evolution of humans and large mammals. Iraqi Geological Journal Hijab and Al-Dabbas 53 (2C), 2020: 13-25
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