Earthquakes are the shaking of the Earth's crust, making quick energy discharge in the Earth's lithosphere by creating seismic waves. The global temperature is a significant climate variable that affects the Earth's ecosystem and civilization. The global temperature record indicates the average temperature of various periods across all locations in the globe. It is dependent on the amount of energy Earth absorbs from the Sun and emits back into space. The earthquake has always been a challenging exploration topic for the last few decades. Finding its association with global temperature fluctuations is also popular nowadays. This work aims to investigate the correlation and causal relation between rising global temperature and earthquake occurrences. In this regard, two dynamics, namely global temperature anomalies and the occurrence of earthquakes, have been taken from the Intergovernmental Panel on Climate Change (IPCC) and US Geological Survey (USGS), respectively. An endeavour has been taken to determine the degree of association between earthquake occurrence and global temperature fluctuation through the temporal variation analysis and correlation analysis for the Alaska region and global consequences. The results show that the global temperature anomalies strongly influence the earthquakes of minor magnitudes, specifically magnitude of 2.0 to 4.9 M. The study further investigates the causal relationship between earthquake occurrences and global temperature fluctuations by using the Granger causality test, which reveals bidirectional causality exists between the two dynamics. These results will help future researchers to create a suitable mathematical model to predict the future values of each dynamics using other's previous records.

Proper utilization of geothermal energy for power generation is still overlooked in India even after having enough potential as much as the equivalent to its other nonconventional energy resources. The source of geothermal energy is the decay of the radio-nuclei present inside the Earth’s crust apart from the primordial heat source. The noble gas 4He is also produced during the radioactive disintegration process. Therefore, measuring the amount of 4He gas along with some other geochemical parameters in an Indian geothermal area, the potential of the reservoir can be evaluated. Mathematical calculations relating to the radioactive disintegration to estimate the geothermal potential of Bakreswar geothermal reservoir utilizing the concept of the 4He exploration technique has been described here. The study showed that the heat (radiogenic) energy generated by the radioactive decay of 232Th, 238U, and 235U inside the reservoir was evaluated as 38 MW. This value raises to 76 MW when primordial heat is included. The detail calculations suggest that a Kalina cycle based binary power plant using ammonia–water mixture as working fluid is supposed to be installed at the identified locations with a drilling depth of about 1,100 m and the plant would be capable of delivering the power of 9.88 MW to 40.26 MW.

No abstract

No abstract