Development of an Ishikawa diagram for the occurrence of extremely high sea levels

¹ Assoc. Prof., University North, Krizaniceva 31, Varazdin, Croatia
² Assoc. Prof., University North, Krizaniceva 31, Varazdin, Croatia
³ PhD student, University North, Krizaniceva 31, Varazdin, Croatia

^* Corresponding author: lgotaldmitrovic@unin.hr

Abstract

A little more than 10,000 years ago, the so-called ice age, with the average temperature of the Earth about 10°lower than today. After the ice age, there was an increase in temperature and the melting of glaciers, and in the last 1,000 years the temperature trend has been slightly negative. The exception is the last 100 years, when there is a sudden increase in air temperature due to the increased emission of greenhouse gases of anthropogenic origin. The increase in temperature in the last hundred years was about 1°. Of co urse, these changes have an impact on the dynamics of the ocean, and a particular problem is the global rise in sea level. In the paper, an Ishikawa diagram was developed that analyzes the impacts of sea level rise. As the main causes of sea level change, both in time and in space, are included: tidal oscillations, meteorologically caused sea level changes, and changes on a seasonal and multi-year time scale. Each of these main causes is explained and sub-causes are found using the laws of physical chemistry and thermodynamics. Sub-causes have been identified that can be influenced most easily and quickly, acting preventively to save densely populated areas.