Geothermal Energy and Earthquakes 2

There are, however, many thermal anomalies – i.e. regions with significantly higher temperature gradients – particularly in volcanic areas. This applies for example to Iceland, Italy, Indonesia, and New Zealand. At various points in these countries, nature itself provides the necessary circulatory system for driving heat to the surface (hot springs and geysers, for example). Anywhere else, drilling must be carried out using feed pumps or geothermal probes with circulation pumps in order to make use of the heat. Various technologies are available for this purpose. A distinction is made between shallow geothermal energy (up to approximately 400 meters) and deep geothermal energy.